--- loncom/interface/lonparmset.pm	2016/07/12 20:30:20	1.560
+++ loncom/interface/lonparmset.pm	2020/02/10 19:48:56	1.595
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # Handler to set parameters for assessments
 #
-# $Id: lonparmset.pm,v 1.560 2016/07/12 20:30:20 damieng Exp $
+# $Id: lonparmset.pm,v 1.595 2020/02/10 19:48:56 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -36,7 +36,8 @@ lonparmset - Handler to set parameters f
 
 =head1 SYNOPSIS
 
-lonparmset provides an interface to setting course parameters.
+lonparmset provides an interface to setting content parameters in a 
+course.
 
 It contains all the code for the "Content and Problem Settings" UI, except
 for the helpers parameter.helper and resettimes.helper, and lonhelper.pm,
@@ -137,7 +138,7 @@ javascript function 'pjump'.
 
 =item print_td()
 
-=item print_usergroups()
+=item check_other_groups()
 
 =item parm_control_group()
 
@@ -336,6 +337,10 @@ use LONCAPA qw(:DEFAULT :match);
 ##################################################
 
 # Page header
+#
+# @param {Apache2::RequestRec} $r - Apache request object
+# @param {string} $mode - selected tab, 'parmset' for course and problem settings, or 'coursepref' for course settings
+# @param {string} $crstype - course type ('Community' for community settings)
 sub startSettingsScreen {
     my ($r,$mode,$crstype)=@_;
 
@@ -363,22 +368,47 @@ sub endSettingsScreen {
 
 
 ##################################################
-# TABLE MODE
+# (mostly) TABLE MODE
 # (parmval is also used for the log of parameter changes)
 ##################################################
 
+# Calls parmval_by_symb, getting the symb from $id with &symbcache.
+#
+# @param {string} $what - part info and parameter name separated by a dot, e.g. '0.weight'
+# @param {string} $id - resource id or map pc
+# @param {string} $def - the resource's default value for this parameter
+# @param {string} $uname - user name
+# @param {string} $udom - user domain
+# @param {string} $csec - section name
+# @param {string} $cgroup - group name
+# @param {hash reference} $courseopt - course parameters hash (result of lonnet::get_courseresdata, dump of course's resourcedata.db)
+# @returns {Array}
 sub parmval {
     my ($what,$id,$def,$uname,$udom,$csec,$cgroup,$courseopt)=@_;
     return &parmval_by_symb($what,&symbcache($id),$def,$uname,$udom,$csec,
                                                            $cgroup,$courseopt);
 }
 
+# Returns an array containing
+# - the most specific level that is defined for that parameter (integer)
+# - an array with the level as index and the parameter value as value (when defined)
+#   (level 1 is the most specific and will have precedence)
+#
+# @param {string} $what - part info and parameter name separated by a dot, e.g. '0.weight'
+# @param {string} $symb - resource symb or map src
+# @param {string} $def - the resource's default value for this parameter
+# @param {string} $uname - user name
+# @param {string} $udom - user domain
+# @param {string} $csec - section name
+# @param {string} $cgroup - group name
+# @param {hash reference} $courseopt - course parameters hash (result of lonnet::get_courseresdata, dump of course's resourcedata.db)
+# @returns {Array}
 sub parmval_by_symb {
     my ($what,$symb,$def,$uname,$udom,$csec,$cgroup,$courseopt)=@_;
 
     my $useropt;
     if ($uname ne '' && $udom ne '') {
-    $useropt = &Apache::lonnet::get_userresdata($uname,$udom);
+        $useropt = &Apache::lonnet::get_userresdata($uname,$udom);
     }
 
     my $result='';
@@ -386,7 +416,10 @@ sub parmval_by_symb {
 # ----------------------------------------------------- Cascading lookup scheme
     my $map=(&Apache::lonnet::decode_symb($symb))[0];
     $map = &Apache::lonnet::deversion($map);
-
+    
+    # NOTE: some of that code looks redondant with code in lonnavmaps::parmval_real,
+    # any change should be reflected there.
+    
     my $symbparm=$symb.'.'.$what;
     my $recurseparm=$map.'___(rec).'.$what; 
     my $mapparm=$map.'___(all).'.$what;
@@ -409,16 +442,19 @@ sub parmval_by_symb {
 
 # --------------------------------------------------------- first, check course
 
+# 18 - General Course
     if (defined($$courseopt{$courselevel})) {
         $outpar[18]=$$courseopt{$courselevel};
         $result=18;
     }
 
+# 17 - Map or Folder level in course (recursive) 
     if (defined($$courseopt{$courseleveli})) {
         $outpar[17]=$$courseopt{$courseleveli};
         $result=17;
     }
 
+# 16 - Map or Folder level in course (non-recursive)
     if (defined($$courseopt{$courselevelm})) {
         $outpar[16]=$$courseopt{$courselevelm};
         $result=16;
@@ -426,14 +462,17 @@ sub parmval_by_symb {
 
 # ------------------------------------------------------- second, check default
 
+# 15 - resource default
     if (defined($def)) { $outpar[15]=$def; $result=15; }
 
 # ------------------------------------------------------ third, check map parms
 
     
+# 14 - map default
     my $thisparm=&parmhash($symbparm);
     if (defined($thisparm)) { $outpar[14]=$thisparm; $result=14; }
 
+# 13 - resource level in course
     if (defined($$courseopt{$courselevelr})) {
         $outpar[13]=$$courseopt{$courselevelr};
         $result=13;
@@ -441,18 +480,22 @@ sub parmval_by_symb {
 
 # ------------------------------------------------------ fourth, back to course
     if ($csec ne '') {
+# 12 - General for section
         if (defined($$courseopt{$seclevel})) {
             $outpar[12]=$$courseopt{$seclevel};
             $result=12;
         }
+# 11 - Map or Folder level for section (recursive)
         if (defined($$courseopt{$secleveli})) {
             $outpar[11]=$$courseopt{$secleveli};
             $result=11;
         }
+# 10 - Map or Folder level for section (non-recursive)
         if (defined($$courseopt{$seclevelm})) {
             $outpar[10]=$$courseopt{$seclevelm};
             $result=10;
         }
+# 9 - resource level in section
         if (defined($$courseopt{$seclevelr})) {
             $outpar[9]=$$courseopt{$seclevelr};
             $result=9;
@@ -460,18 +503,22 @@ sub parmval_by_symb {
     }
 # ------------------------------------------------------ fifth, check course group
     if ($cgroup ne '') {
+# 8 - General for group
         if (defined($$courseopt{$grplevel})) {
             $outpar[8]=$$courseopt{$grplevel};
             $result=8;
         }
+# 7 - Map or Folder level for group (recursive)
         if (defined($$courseopt{$grpleveli})) {
             $outpar[7]=$$courseopt{$grpleveli};
             $result=7;
         }
+# 6 - Map or Folder level for group (non-recursive)
         if (defined($$courseopt{$grplevelm})) {
             $outpar[6]=$$courseopt{$grplevelm};
             $result=6;
         }
+# 5 - resource level in group
         if (defined($$courseopt{$grplevelr})) {
             $outpar[5]=$$courseopt{$grplevelr};
             $result=5;
@@ -481,25 +528,29 @@ sub parmval_by_symb {
 # ---------------------------------------------------------- sixth, check user
 
     if ($uname ne '') {
-    if (defined($$useropt{$courselevel})) {
-        $outpar[4]=$$useropt{$courselevel};
-        $result=4;
-    }
+# 4 - General for specific student
+        if (defined($$useropt{$courselevel})) {
+            $outpar[4]=$$useropt{$courselevel};
+            $result=4;
+        }
 
-    if (defined($$useropt{$courseleveli})) {
-        $outpar[3]=$$useropt{$courseleveli};
-        $result=3;
-    }
+# 3 - Map or Folder level for specific student (recursive)
+        if (defined($$useropt{$courseleveli})) {
+            $outpar[3]=$$useropt{$courseleveli};
+            $result=3;
+        }
 
-    if (defined($$useropt{$courselevelm})) {
-        $outpar[2]=$$useropt{$courselevelm};
-        $result=2;
-    }
+# 2 - Map or Folder level for specific student (non-recursive)
+        if (defined($$useropt{$courselevelm})) {
+            $outpar[2]=$$useropt{$courselevelm};
+            $result=2;
+        }
 
-    if (defined($$useropt{$courselevelr})) {
-        $outpar[1]=$$useropt{$courselevelr};
-        $result=1;
-    }
+# 1 - resource level for specific student
+        if (defined($$useropt{$courselevelr})) {
+            $outpar[1]=$$useropt{$courselevelr};
+            $result=1;
+        }
     }
     return ($result,@outpar);
 }
@@ -509,20 +560,25 @@ sub parmval_by_symb {
 # --- Caches local to lonparmset
 
 
+# Reset lonparmset caches (called at the beginning and end of the handler).
 sub reset_caches {
     &resetparmhash();
     &resetsymbcache();
     &resetrulescache();
 }
 
+# cache for map parameters, stored temporarily in $env{'request.course.fn'}_parms.db
+# (these parameters come from param elements in .sequence files created with the advanced RAT)
 {
-    my $parmhashid;
-    my %parmhash;
+    my $parmhashid; # course identifier, to initialize the cache only once for a course
+    my %parmhash; # the parameter cache
+    # reset map parameter hash
     sub resetparmhash {
         undef($parmhashid);
         undef(%parmhash);
     }
 
+    # dump the _parms.db database into %parmhash
     sub cacheparmhash {
         if ($parmhashid eq  $env{'request.course.fn'}) { return; }
         my %parmhashfile;
@@ -534,6 +590,7 @@ sub reset_caches {
         }
     }
 
+    # returns a parameter value for an identifier symb.parts.parameter, using the map parameter cache
     sub parmhash {
         my ($id) = @_;
         &cacheparmhash();
@@ -541,14 +598,18 @@ sub reset_caches {
     }
 }
 
+# cache resource id or map pc -> resource symb or map src, using lonnavmaps to find association
 {
-    my $symbsid;
-    my %symbs;
+    my $symbsid; # course identifier, to initialize the cache only once for a course
+    my %symbs; # hash id->symb
+    # reset the id->symb cache
     sub resetsymbcache {
         undef($symbsid);
         undef(%symbs);
     }
 
+    # returns the resource symb or map src corresponding to a resource id or map pc
+    # (using lonnavmaps and a cache)
     sub symbcache {
         my $id=shift;
         if ($symbsid ne $env{'request.course.id'}) {
@@ -569,14 +630,16 @@ sub reset_caches {
     }
 }
 
+# cache for parameter default actions (stored in parmdefactions.db)
 {
-    my $rulesid;
-    my %rules;
+    my $rulesid; # course identifier, to initialize the cache only once for a course
+    my %rules; # parameter default actions hash
     sub resetrulescache {
         undef($rulesid);
         undef(%rules);
     }
 
+    # returns the value for a given key in the parameter default action hash
     sub rulescache {
         my $id=shift;
         if ($rulesid ne $env{'request.course.id'}
@@ -591,7 +654,12 @@ sub reset_caches {
 }
 
 
-
+# Returns the values of the parameter type default action
+# "default value when manually setting".
+# If none is defined, ('','','','','') is returned.
+#
+# @param {string} $type - parameter type
+# @returns {Array<string>} - (hours, min, sec, value)
 sub preset_defaults {
     my $type=shift;
     if (&rulescache($type.'_action') eq 'default') {
@@ -607,8 +675,13 @@ sub preset_defaults {
 }
 
 
-
-
+# Checks that a date is after enrollment start date and before
+# enrollment end date.
+# Returns HTML with a warning if it is not, or the empty string otherwise.
+# This is used by both overview and table modes.
+#
+# @param {integer} $checkdate - the date to check.
+# @returns {string} - HTML possibly containing a localized warning message.
 sub date_sanity_info {
    my $checkdate=shift;
    unless ($checkdate) { return ''; }
@@ -643,26 +716,39 @@ sub date_sanity_info {
 #      }
    return $result;
 }
-##################################################
-##################################################
-#
-# Store a parameter by ID
-#
-# Takes
-# - resource id
-# - name of parameter
-# - level
-# - new value
-# - new type
-# - username
-# - userdomain
 
+
+# Store a parameter value and type by ID, also triggering more parameter changes based on parameter default actions.
+#
+# @param {string} $sresid - resource id or map pc
+# @param {string} $spnam - part info and parameter name separated by a dot or underscore, e.g. '0.weight'
+# @param {integer} $snum - level
+# @param {string} $nval - new value
+# @param {string} $ntype - new type
+# @param {string} $uname - username
+# @param {string} $udom - userdomain
+# @param {string} $csec - section name
+# @param {string} $cgroup - group name
 sub storeparm {
     my ($sresid,$spnam,$snum,$nval,$ntype,$uname,$udom,$csec,$cgroup)=@_;
     &storeparm_by_symb(&symbcache($sresid),$spnam,$snum,$nval,$ntype,$uname,$udom,$csec,'',$cgroup);
 }
 
-my %recstack;
+my %recstack; # hash parameter name -> 1 when a parameter was used before in a recursive call to storeparm_by_symb
+
+# Store a parameter value and type by symb, also triggering more parameter changes based on parameter default actions.
+# Uses storeparm_by_symb_inner to actually store the parameter, ignoring any returned error.
+#
+# @param {string} $symb - resource symb or map src
+# @param {string} $spnam - part info and parameter name separated by a dot or underscore, e.g. '0.weight'
+# @param {integer} $snum - level
+# @param {string} $nval - new value
+# @param {string} $ntype - new type
+# @param {string} $uname - username
+# @param {string} $udom - userdomain
+# @param {string} $csec - section name
+# @param {boolean} $recflag - should be true for recursive calls to storeparm_by_symb, false otherwise
+# @param {string} $cgroup - group name
 sub storeparm_by_symb {
     my ($symb,$spnam,$snum,$nval,$ntype,$uname,$udom,$csec,$recflag,$cgroup)=@_;
     unless ($recflag) {
@@ -692,8 +778,7 @@ sub storeparm_by_symb {
             # are there restrictions?
                 if (&rulescache($triggered.'_triggervalue')=~/\w/) {
                     $active=0;
-                    foreach my $possiblevalue (split(/\s*\,
-                            \s*/,&rulescache($triggered.'_triggervalue'))) {
+                    foreach my $possiblevalue (split(/\s*\,\s*/,&rulescache($triggered.'_triggervalue'))) {
                         if (lc($possiblevalue) eq lc($nval)) { $active=1; }
                     }
                 }
@@ -715,10 +800,25 @@ sub storeparm_by_symb {
     return '';
 }
 
+# Adds all given arguments to the course parameter log.
+# @returns {string} - the answer to the lonnet query.
 sub log_parmset {
     return &Apache::lonnet::write_log('course','parameterlog',@_);
 }
 
+# Store a parameter value and type by symb, without using the parameter default actions.
+# Expire related sheets.
+#
+# @param {string} $symb - resource symb or map src
+# @param {string} $spnam - part info and parameter name separated by a dot, e.g. '0.weight'
+# @param {integer} $snum - level
+# @param {string} $nval - new value
+# @param {string} $ntype - new type
+# @param {string} $uname - username
+# @param {string} $udom - userdomain
+# @param {string} $csec - section name
+# @param {string} $cgroup - group name
+# @returns {string} - HTML code with an error message if the parameter could not be stored.
 sub storeparm_by_symb_inner {
 # ---------------------------------------------------------- Get symb, map, etc
     my ($symb,$spnam,$snum,$nval,$ntype,$uname,$udom,$csec,$cgroup)=@_;
@@ -747,17 +847,36 @@ sub storeparm_by_symb_inner {
     my $courselevelm=$env{'request.course.id'}.'.'.$mapparm;
 
     my $storeunder='';
+    my $possreplace='';
     if (($snum==18) || ($snum==4)) { $storeunder=$courselevel; }
-    if (($snum==17) || ($snum==3)) { $storeunder=$courseleveli; } 
-    if (($snum==16) || ($snum==2)) { $storeunder=$courselevelm; }
+    if (($snum==17) || ($snum==3)) { 
+        $storeunder=$courseleveli;
+        $possreplace=$courselevelm; 
+    } 
+    if (($snum==16) || ($snum==2)) { 
+        $storeunder=$courselevelm;
+        $possreplace=$courseleveli;
+    }
     if (($snum==13) || ($snum==1)) { $storeunder=$courselevelr; }
     if ($snum==12) { $storeunder=$seclevel; }
-    if ($snum==11) { $storeunder=$secleveli; }
-    if ($snum==10) { $storeunder=$seclevelm; }
+    if ($snum==11) { 
+        $storeunder=$secleveli;
+        $possreplace=$seclevelm; 
+    }
+    if ($snum==10) { 
+        $storeunder=$seclevelm;
+        $possreplace=$secleveli;
+    }
     if ($snum==9) { $storeunder=$seclevelr; }
     if ($snum==8) { $storeunder=$grplevel; }
-    if ($snum==7) { $storeunder=$grpleveli; }
-    if ($snum==6) { $storeunder=$grplevelm; }
+    if ($snum==7) { 
+        $storeunder=$grpleveli;
+        $possreplace=$grplevelm;
+    }
+    if ($snum==6) {
+        $storeunder=$grplevelm;
+        $possreplace=$grpleveli;
+    }
     if ($snum==5) { $storeunder=$grplevelr; }
 
 
@@ -776,7 +895,7 @@ sub storeparm_by_symb_inner {
         &Apache::lonnet::expirespread('','','studentcalc');
         if (($snum==13) || ($snum==9) || ($snum==5)) {
             &Apache::lonnet::expirespread('','','assesscalc',$symb);
-        } elsif (($snum==14) || ($snum==10) || ($snum==6)) {
+        } elsif (($snum==17) || ($snum==16) || ($snum==11) || ($snum==10) || ($snum==7) || ($snum==6)) {
             &Apache::lonnet::expirespread('','','assesscalc',$map);
         } else {
             &Apache::lonnet::expirespread('','','assesscalc');
@@ -790,6 +909,17 @@ sub storeparm_by_symb_inner {
             $reply=&Apache::lonnet::cput
             ('resourcedata',\%storecontent,$cdom,$cnum);
             &log_parmset(\%storecontent);
+            if ($possreplace) {
+                my $resdata = &Apache::lonnet::get_courseresdata($cnum,$cdom);
+                if (ref($resdata) eq 'HASH') {
+                    if (exists($resdata->{$possreplace})) {
+                        if (&Apache::lonnet::del
+                            ('resourcedata',[$possreplace,$possreplace.'.type'],$cdom,$cnum) eq 'ok') {
+                            &log_parmset({$possreplace => '', $possreplace.'.type' => $ntype},1);   
+                        }
+                    }
+                }
+            }
         }
         &Apache::lonnet::devalidatecourseresdata($cnum,$cdom);
     } else {
@@ -800,7 +930,7 @@ sub storeparm_by_symb_inner {
         if ($snum==1) {
             &Apache::lonnet::expirespread
             ($uname,$udom,'assesscalc',$symb);
-        } elsif ($snum==2) {
+        } elsif (($snum==2) || ($snum==3)) {
             &Apache::lonnet::expirespread
             ($uname,$udom,'assesscalc',$map);
         } else {
@@ -815,6 +945,18 @@ sub storeparm_by_symb_inner {
             $reply=&Apache::lonnet::cput
             ('resourcedata',\%storecontent,$udom,$uname);
             &log_parmset(\%storecontent,0,$uname,$udom);
+            if ($possreplace) {
+                my $resdata = &Apache::lonnet::get_userresdata($uname,$udom);
+                if (ref($resdata) eq 'HASH') {
+                    if (exists($resdata->{$possreplace})) {
+                        if (&Apache::lonnet::del
+                            ('resourcedata',[$possreplace,$possreplace.'.type'],$udom,$uname) eq 'ok') {
+                            &log_parmset({$possreplace => '',$possreplace.'.type' => $ntype},1,
+                                          $uname,$udom);
+                        }
+                    }
+                }
+            }
         }
         &Apache::lonnet::devalidateuserresdata($uname,$udom);
     }
@@ -826,6 +968,15 @@ sub storeparm_by_symb_inner {
 }
 
 
+# Returns HTML with the value of the given parameter,
+# using a readable format for dates, and
+# a warning if there is a problem with a date.
+# Used by table mode.
+# Returns HTML for the editmap.png image if no value is defined and $editable is true.
+#
+# @param {string} $value - the parameter value
+# @param {string} $type - the parameter type
+# @param {boolean} $editable - Set to true to get an icon when no value is defined.
 sub valout {
     my ($value,$type,$name,$editable)=@_;
     my $result = '';
@@ -904,12 +1055,27 @@ sub valout {
 }
 
 
+# Returns HTML containing a link on a parameter value, for table mode.
+# The link uses the javascript function 'pjump'.
+#
+# @param {string} $type - parameter type
+# @param {string} $dis - dialog title for editing the parameter value and type
+# @param {string} $value - parameter value
+# @param {string} $marker - identifier for the parameter, "resource id&part_parameter name&level", will be passed as pres_marker when the user submits a change.
+# @param {string} $return - prefix for the name of the form and field names that will be used to submit the form ('parmform.pres')
+# @param {string} $call - javascript function to call to submit the form ('psub')
+# @param {boolean} $recursive - true if link is for a map/folder where parameter is currently set to be recursive.
+# @param {string} $extra - optional additional information to send as tenth arg in call to javascript pjump function.
 sub plink {
-    my ($type,$dis,$value,$marker,$return,$call)=@_;
+    my ($type,$dis,$value,$marker,$return,$call,$recursive,$extra)=@_;
     my $winvalue=$value;
     unless ($winvalue) {
-        if (&isdateparm($type)) {
+        if (&isdateparm($type) || (&is_specialstring($type))) {
             $winvalue=$env{'form.recent_'.$type};
+        } elsif ($type eq 'string_yesno') {
+            if ($env{'form.recent_string'} =~ /^(yes|no)$/i) {
+                $winvalue=$env{'form.recent_string'};
+            }
         } else {
             $winvalue=$env{'form.recent_'.(split(/\_/,$type))[0]};
         }
@@ -917,19 +1083,22 @@ sub plink {
     my ($parmname)=((split(/\&/,$marker))[1]=~/\_([^\_]+)$/);
     my ($hour,$min,$sec,$val)=&preset_defaults($parmname);
     unless (defined($winvalue)) { $winvalue=$val; }
-    my $valout = &valout($value,$type,$parmname,1);
+    my $valout = &valout($value,$type,1);
     my $unencmarker = $marker;
     foreach my $item (\$type, \$dis, \$winvalue, \$marker, \$return, \$call,
-              \$hour, \$min, \$sec) {
+              \$hour, \$min, \$sec, \$extra) {
         $$item = &HTML::Entities::encode($$item,'"<>&');
         $$item =~ s/\'/\\\'/g;
     }
     return '<table width="100%"><tr valign="top" align="right"><td><a name="'.$unencmarker.'" /></td></tr><tr><td align="center">'.
     '<a href="javascript:pjump('."'".$type."','".$dis."','".$winvalue."','"
-        .$marker."','".$return."','".$call."','".$hour."','".$min."','".$sec."'".');">'.
-        $valout.'</a></td></tr></table>';
+        .$marker."','".$return."','".$call."','".$hour."','".$min."','".$sec."','".$extra."'".');">'.
+        $valout.'</a></td></tr>'.($recursive?'<tr><td align="center" class="LC_parm_recursive">'.
+                                              &mt('recursive').'</td></tr>' : '').'</table>';
+
 }
 
+# Javascript for table mode.
 sub page_js {
 
     my $selscript=&Apache::loncommon::studentbrowser_javascript();
@@ -942,20 +1111,22 @@ sub page_js {
     $pjump_def
 
     function psub() {
+        var specstring = /^string_!(yesno|any)/i;
         if (document.parmform.pres_marker.value!='') {
             document.parmform.action+='#'+document.parmform.pres_marker.value;
             var typedef=new Array();
             typedef=document.parmform.pres_type.value.split('_');
-           if (document.parmform.pres_type.value!='') {
-            if (typedef[0]=='date') {
-                eval('document.parmform.recent_'+
-                     document.parmform.pres_type.value+
-             '.value=document.parmform.pres_value.value;');
-            } else {
-                eval('document.parmform.recent_'+typedef[0]+
-             '.value=document.parmform.pres_value.value;');
+            if (document.parmform.pres_type.value!='') {
+                if ((typedef[0]=='date') || 
+                    (specstring.test(document.parmform.pres_type.value)))  {
+                    eval('document.parmform.recent_'+
+                        document.parmform.pres_type.value+
+                        '.value=document.parmform.pres_value.value;');
+                } else {
+                    eval('document.parmform.recent_'+typedef[0]+
+                        '.value=document.parmform.pres_value.value;');
+                }
             }
-       }
             document.parmform.submit();
         } else {
             document.parmform.pres_value.value='';
@@ -979,6 +1150,8 @@ ENDJS
 
 }
 
+# Javascript to show or hide the map selection (function showHide_courseContent),
+# for table and overview modes.
 sub showhide_js {
     return <<"COURSECONTENTSCRIPT";
 
@@ -999,6 +1172,7 @@ function showHide_courseContent() {
 COURSECONTENTSCRIPT
 }
 
+# Javascript functions showHideLenient and toggleParmTextbox, for overview mode
 sub toggleparmtextbox_js {
     return <<"ENDSCRIPT";
 
@@ -1058,6 +1232,7 @@ function toggleParmTextbox(form,key) {
 ENDSCRIPT
 }
 
+# Javascript function validateParms, for overview mode
 sub validateparms_js {
     return <<'ENDSCRIPT';
 
@@ -1068,12 +1243,16 @@ function validateParms() {
     var patternLenientStd = /^(yes|no|default)$/;
     var ipallowRegExp = /^setipallow_/;
     var ipdenyRegExp = /^setipdeny_/; 
+    var deeplinkRegExp = /^deeplink_(listing|scope)_/;
+    var deeplinkUrlsRegExp = /^deeplink_urls_/;
+    var deeplinkltiRegExp = /^deeplink_lti_/;
+    var deeplinkkeyRegExp = /^deeplink_key_/;
     var patternIP = /[\[\]\*\.a-zA-Z\d\-]+/;
     if ((document.parmform.elements.length != 'undefined')  && (document.parmform.elements.length) != 'null') {
         if (document.parmform.elements.length) {
             for (i=0; i<document.parmform.elements.length; i++) {
                 var name=document.parmform.elements[i].name;
-                if (textRegExp.test(name)) { 
+                if (textRegExp.test(name)) {
                     var identifier = name.replace(textRegExp,'');
                     if (tailLenient.test(identifier)) {
                         if (document.parmform.elements['set_'+identifier].length) {
@@ -1096,31 +1275,61 @@ function validateParms() {
                             }
                         }
                     }
-                } else {
-                    if (ipallowRegExp.test(name)) {
-                        var identifier = name.replace(ipallowRegExp,'');
-                        var possallow = document.parmform.elements[i].value;
-                        possallow = possallow.replace(/^\s+|\s+$/g,'');
-                        if (patternIP.test(possallow)) {
-                            if (document.parmform.elements['set_'+identifier].value) {
-                                possallow = ','+possallow;
-                            }
-                            document.parmform.elements['set_'+identifier].value += possallow; 
+                } else if (ipallowRegExp.test(name)) {
+                    var identifier = name.replace(ipallowRegExp,'');
+                    var possallow = document.parmform.elements[i].value;
+                    possallow = possallow.replace(/^\s+|\s+$/g,'');
+                    if (patternIP.test(possallow)) {
+                        if (document.parmform.elements['set_'+identifier].value) {
+                            possallow = ','+possallow;
                         }
-                    } else {
-                        if (ipdenyRegExp.test(name)) {
-                            var identifier = name.replace(ipdenyRegExp,'');
-                            var possdeny = document.parmform.elements[i].value;
-                            possdeny = possdeny.replace(/^\s+|\s+$/g,'');
-                            if (patternIP.test(possdeny)) {
-                                possdeny = '!'+possdeny;
-                                if (document.parmform.elements['set_'+identifier].value) {
-                                    possdeny = ','+possdeny;
-                                }
-                                document.parmform.elements['set_'+identifier].value += possdeny;
-                            }
+                        document.parmform.elements['set_'+identifier].value += possallow;
+                    }
+                } else if (ipdenyRegExp.test(name)) {
+                    var identifier = name.replace(ipdenyRegExp,'');
+                    var possdeny = document.parmform.elements[i].value;
+                    possdeny = possdeny.replace(/^\s+|\s+$/g,'');
+                    if (patternIP.test(possdeny)) {
+                        possdeny = '!'+possdeny;
+                        if (document.parmform.elements['set_'+identifier].value) {
+                            possdeny = ','+possdeny;
                         }
+                        document.parmform.elements['set_'+identifier].value += possdeny;
+                    }
+                } else if (deeplinkRegExp.test(name)) {
+                    var identifier =  name.replace(deeplinkRegExp,'');
+                    var possdeeplink = document.parmform.elements[i].value;
+                    possdeeplink = possdeeplink.replace(/^\s+|\s+$/g,'');
+                    if (document.parmform.elements['set_'+identifier].value) {
+                        possdeeplink = ','+possdeeplink;
+                    }
+                    document.parmform.elements['set_'+identifier].value += possdeeplink;
+                } else if (deeplinkUrlsRegExp.test(name)) {
+                    if (document.parmform.elements[i].checked) {
+                        var identifier =  name.replace(deeplinkUrlsRegExp,'');
+                        var posslinkurl = document.parmform.elements[i].value;
+                        posslinkurl = posslinkurl.replace(/^\s+|\s+$/g,'');
+                        if (document.parmform.elements['set_'+identifier].value) {
+                            posslinkurl = ','+posslinkurl;
+                        }
+                        document.parmform.elements['set_'+identifier].value += posslinkurl;
+                    }
+                } else if (deeplinkltiRegExp.test(name)) {
+                    var identifier = name.replace(deeplinkltiRegExp,'');
+                    var posslti = document.parmform.elements[i].value;
+                    posslti = posslti.replace(/\D+/g,'');
+                    if (document.parmform.elements['set_'+identifier].value) {
+                        posslti = ':'+posslti;
+                    }
+                    document.parmform.elements['set_'+identifier].value += posslti;
+                } else if (deeplinkkeyRegExp.test(name)) {
+                    var identifier = name.replace(deeplinkkeyRegExp,'');
+                    var posskey = document.parmform.elements[i].value;
+                    posskey = posskey.replace(/\W+/g,'');
+                    if (document.parmform.elements['set_'+identifier].value) {
+                        posslti = ':'+posskey;
                     }
+                    document.parmform.elements['set_'+identifier].value += posskey;
                 }
             }
         }
@@ -1131,6 +1340,7 @@ function validateParms() {
 ENDSCRIPT
 }
 
+# Javascript initialization, for overview mode
 sub ipacc_boxes_js  {
     my $remove = &mt('Remove');
     return <<"END";
@@ -1155,6 +1365,7 @@ sub ipacc_boxes_js  {
 END
 }
 
+# Javascript function toggleSecret, for overview mode.
 sub done_proctor_js {
     return <<"END";
 function toggleSecret(form,radio,key) {
@@ -1180,6 +1391,49 @@ END
 
 }
 
+# Javascript function toggle
+sub deeplink_js {
+    return <<"END";
+function toggleDeepLink(form,item,key) {
+    var radios = form['deeplink_'+item+'_'+key];
+    if (radios.length) {
+        var keybox;
+        if (document.getElementById('deeplink_key_'+item+'_'+key)) {
+            keybox = document.getElementById('deeplink_key_'+item+'_'+key);
+        }
+        var ltidiv;
+        if (document.getElementById('deeplinkdiv_lti_'+item+'_'+key)) {
+            ltidiv = document.getElementById('deeplinkdiv_lti_'+item+'_'+key);
+        }
+        for (var i=0; i<radios.length; i++) {
+            if (radios[i].checked) {
+                if (radios[i].value == 'lti') {
+                    ltidiv.style.display = 'inline-block';
+                    keybox.type = 'hidden';
+                    keybox.value = '';
+                } else {
+                    if (ltidiv != '') {
+                        ltidiv.style.display = 'none';
+                        form['deeplink_lti_'+key].selectedIndex = 0;
+                    }
+                    if (radios[i].value == 'key') {
+                        keybox.type = 'text';
+                    } else {
+                        keybox.type = 'hidden';
+                    }
+                }
+            }
+        }
+    }
+}
+END
+
+}
+
+# Prints HTML page start for table mode.
+# @param {Apache2::RequestRec} $r - the Apache request
+# @param {string} $psymb - resource symb
+# @param {string} $crstype - course type (Community / Course / Placement Test)
 sub startpage {
     my ($r,$psymb,$crstype) = @_;
 
@@ -1228,12 +1482,42 @@ ENDHEAD
 }
 
 
+# Prints a row for table mode (except for the tr start).
+# Every time a hash reference is passed, a single entry is used, so print_row
+# could just use these values, but why make it simple when it can be complicated ?
+#
+# @param {Apache2::RequestRec} $r - the Apache request
+# @param {string} $which - parameter key ('parameter_'.part.'_'.name)
+# @param {hash reference} $part - parameter key -> parameter part (can be problem part.'_'.response id for response parameters)
+# @param {hash reference} $name - parameter key -> parameter name
+# @param {hash reference} $symbp - map pc or resource/map id -> map src.'___(all)' or resource symb
+# @param {string} $rid - resource id
+# @param {hash reference} $default - parameter key -> resource parameter default value
+# @param {hash reference} $defaulttype - parameter key -> resource parameter default type
+# @param {hash reference} $display - parameter key -> full title for the parameter
+# @param {string} $defbgone - user level and other levels background color
+# @param {string} $defbgtwo - section level background color, also used for part number
+# @param {string} $defbgthree - group level background color
+# @param {string} $parmlev - parameter level (Resource:'full', Map:'map', Course:'general')
+# @param {string} $uname - user name
+# @param {string} $udom - user domain
+# @param {string} $csec - section name
+# @param {string} $cgroup - group name
+# @param {array reference} $usersgroups - list of groups the user belongs to, if any
+# @param {boolean} $noeditgrp - true if no edit is allowed for group level parameters
+# @param {boolean} $readonly - true if no editing allowed.
+# @param {array reference} - $recurseup - list of maps containing current one, ending at top-level.
+# @param {hash reference} - $maptitles - - hash map id or src -> map title 
+# @param {hash reference} - $allmaps_inverted - hash map src -> map pc
+# @param {scalar reference} - $reclinks - number of "parameter in effect" cells with link to map where recursive param was set 
 sub print_row {
     my ($r,$which,$part,$name,$symbp,$rid,$default,$defaulttype,$display,$defbgone,
-    $defbgtwo,$defbgthree,$parmlev,$uname,$udom,$csec,$cgroup,$usersgroups,$noeditgrp)=@_;
+    $defbgtwo,$defbgthree,$parmlev,$uname,$udom,$csec,$cgroup,$usersgroups,$noeditgrp,
+    $readonly,$recurseup,$maptitles,$allmaps_inverted,$reclinks)=@_;
     my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
     my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
     my $courseopt=&Apache::lonnet::get_courseresdata($cnum,$cdom);
+    my $numlinks = 0;
 
     # get the values for the parameter in cascading order
     # empty levels will remain empty
@@ -1270,85 +1554,182 @@ sub print_row {
     my $thismarker=$which;
     $thismarker=~s/^parameter\_//;
     my $mprefix=$rid.'&'.$thismarker.'&';
-    my $effective_parm = &valout($outpar[$result],$typeoutpar[$result],$thismarker);
-    my ($othergrp,$grp_parm,$controlgrp);
-
+    my ($parmname)=($thismarker=~/\_([^\_]+)$/);
+    my ($othergrp,$grp_parm,$controlgrp,$effective_parm,$effparm_rec,$effparm_level,
+        $eff_groupparm,$recurse_check,$recursinfo,$extra);
+    if ((ref($recurseup) eq 'ARRAY') && (@{$recurseup} > 0)) {
+        if ($result eq '') {
+            $recurse_check = 1;
+        } elsif (($uname ne '') && ($result > 3)) {
+            $recurse_check = 1;
+        } elsif (($cgroup ne '') && ($result > 7)) {
+            $recurse_check = 1;
+        } elsif (($csec ne '') && ($result > 11)) {
+            $recurse_check = 1;
+        } elsif ($result > 17) {
+            $recurse_check = 1;
+        }
+        if ($recurse_check) {
+            my $what = $$part{$which}.'.'.$$name{$which};
+            my $prefix;
+            if (($uname ne '') && ($udom ne '')) {
+                my $useropt = &Apache::lonnet::get_userresdata($uname,$udom);
+                $prefix = $env{'request.course.id'};
+                $recursinfo = &get_recursive($recurseup,$useropt,$what,$prefix);
+                if (ref($recursinfo) eq 'ARRAY') {
+                    $effparm_rec = 1;
+                    $effparm_level = &mt('user: [_1]',$uname);
+                }
+            }
+            if (($cgroup ne '') && (!$effparm_rec)) {
+                $prefix = $env{'request.course.id'}.'.['.$cgroup.']';
+                $recursinfo = &get_recursive($recurseup,$courseopt,$what,$prefix);
+                if (ref($recursinfo) eq 'ARRAY') {
+                    $effparm_rec = 1;
+                    $effparm_level = &mt('group: [_1]',$cgroup);
+                }
+            }
+            if (($csec ne '') && (!$effparm_rec)) {
+                $prefix = $env{'request.course.id'}.'.['.$csec.']';
+                $recursinfo = &get_recursive($recurseup,$courseopt,$what,$prefix);
+                if (ref($recursinfo) eq 'ARRAY') {
+                    $effparm_rec = 1;
+                    $effparm_level = &mt('section: [_1]',$csec);
+                }
+            }
+            if (!$effparm_rec) {
+                $prefix = $env{'request.course.id'};
+                $recursinfo = &get_recursive($recurseup,$courseopt,$what,$prefix); 
+                if (ref($recursinfo) eq 'ARRAY') {
+                    $effparm_rec = 1;
+                }
+            }
+        }
+    }
+    if ((!$effparm_rec) && ($result == 17 || $result == 11 || $result == 7 || $result == 3)) {
+        $effparm_rec = 1;
+    }
+    if ((!$effparm_rec) && 
+        (($$name{$which} eq 'encrypturl') || ($$name{$which} eq 'hiddenresource')) && 
+        ($result == 16 || $result == 10 || $result == 6 || $result == 2)) {
+        $effparm_rec = 1;
+    }
+    if ($parmname eq 'deeplink') {
+        my %posslti;
+        my %lti =
+            &Apache::lonnet::get_domain_lti($env{'course.'.$env{'request.course.id'}.'.domain'},
+                                            'provider');
+        foreach my $item (keys(%lti)) {
+            if (ref($lti{$item}) eq 'HASH') {
+                unless ($lti{$item}{'requser'}) {
+                    $posslti{$item} = $lti{$item}{'consumer'};
+                }
+            }
+        }
+        if (keys(%posslti)) {
+            $extra = 'lti_';
+            foreach my $lti (sort { $a <=> $b } keys(%posslti)) {
+                $extra .= $lti.':'.&js_escape($posslti{$lti}).',';
+            }
+            $extra =~ s/,$//;
+        }
+    }
     if ($parmlev eq 'general') {
         if ($uname) {
-            &print_td($r,4,$defbgone,$result,\@outpar,$mprefix,$which,\@typeoutpar,$display);
+            &print_td($r,4,$defbgone,$result,\@outpar,$mprefix,$which,\@typeoutpar,$display,'',$readonly,'',$extra);
         } elsif ($cgroup) {
-            &print_td($r,8,$defbgthree,$result,\@outpar,$mprefix,$which,\@typeoutpar,$display,$noeditgrp);
+            &print_td($r,8,$defbgthree,$result,\@outpar,$mprefix,$which,\@typeoutpar,$display,$noeditgrp,$readonly,'',$extra);
         } elsif ($csec) {
-            &print_td($r,12,$defbgtwo,$result,\@outpar,$mprefix,$which,\@typeoutpar,$display);
+            &print_td($r,12,$defbgtwo,$result,\@outpar,$mprefix,$which,\@typeoutpar,$display,'',$readonly,'',$extra);
         } else {
-            &print_td($r,18,$defbgone,$result,\@outpar,$mprefix,$which,\@typeoutpar,$display);
+            &print_td($r,18,$defbgone,$result,\@outpar,$mprefix,$which,\@typeoutpar,$display,'',$readonly,'',$extra);
         }
     } elsif ($parmlev eq 'map') {
         if ($uname) {
-            &print_td($r,3,$defbgone,$result,\@outpar,$mprefix,$which,\@typeoutpar,$display);
-            &print_td($r,2,$defbgone,$result,\@outpar,$mprefix,$which,\@typeoutpar,$display); 
+            &print_td($r,2,$defbgone,$result,\@outpar,$mprefix,$which,\@typeoutpar,$display,'',$readonly,1,$extra);
         } elsif ($cgroup) {
-            &print_td($r,7,$defbgthree,$result,\@outpar,$mprefix,$which,\@typeoutpar,$display,$noeditgrp);
-            &print_td($r,6,$defbgthree,$result,\@outpar,$mprefix,$which,\@typeoutpar,$display,$noeditgrp);
+            &print_td($r,6,$defbgthree,$result,\@outpar,$mprefix,$which,\@typeoutpar,$display,$noeditgrp,$readonly,1,$extra);
         } elsif ($csec) {
-            &print_td($r,11,$defbgtwo,$result,\@outpar,$mprefix,$which,\@typeoutpar,$display);
-            &print_td($r,10,$defbgtwo,$result,\@outpar,$mprefix,$which,\@typeoutpar,$display);
+            &print_td($r,10,$defbgtwo,$result,\@outpar,$mprefix,$which,\@typeoutpar,$display,'',$readonly,1,$extra);
         } else {
-            &print_td($r,17,$defbgone,$result,\@outpar,$mprefix,$which,\@typeoutpar,$display);
-            &print_td($r,16,$defbgone,$result,\@outpar,$mprefix,$which,\@typeoutpar,$display);
+            &print_td($r,16,$defbgone,$result,\@outpar,$mprefix,$which,\@typeoutpar,$display,'',$readonly,1,$extra);
         }
     } else {
         if ($uname) {
             if (@{$usersgroups} > 1) {
-                my ($coursereply,$grp_parm,$controlgrp);
-                ($coursereply,$othergrp,$grp_parm,$controlgrp) =
-                    &print_usergroups($r,$$part{$which}.'.'.$$name{$which},
+                (my $coursereply,$othergrp,$grp_parm,$controlgrp,my $grp_is_rec) =
+                    &check_other_groups($$part{$which}.'.'.$$name{$which},
                        $rid,$cgroup,$defbgone,$usersgroups,$result,$courseopt);
-                if ($coursereply && $result > 4) {
+                if (($coursereply) && ($result > 4)) {
                     if (defined($controlgrp)) {
                         if ($cgroup ne $controlgrp) {
-                            $effective_parm = $grp_parm;
-                            $result = 0;
+                            $eff_groupparm = $grp_parm;
+                            undef($result);
+                            undef($effparm_rec);
+                            if ($grp_is_rec) {
+                                 $effparm_rec = 1;
+                            }
                         }
                     }
                 }
             }
         }
 
-        &print_td($r,18,$defbgone,$result,\@outpar,$mprefix,$which,\@typeoutpar,$display);
-        &print_td($r,17,$defbgone,$result,\@outpar,$mprefix,$which,\@typeoutpar,$display);
-        &print_td($r,16,$defbgone,$result,\@outpar,$mprefix,$which,\@typeoutpar,$display);
-        &print_td($r,15,'#FFDDDD',$result,\@outpar,$mprefix,$which,\@typeoutpar,$display);
-        &print_td($r,14,'#FFDDDD',$result,\@outpar,$mprefix,$which,\@typeoutpar,$display);
-        &print_td($r,13,$defbgone,$result,\@outpar,$mprefix,$which,\@typeoutpar,$display);
+        &print_td($r,18,$defbgone,$result,\@outpar,$mprefix,$which,\@typeoutpar,$display,'',$readonly,'',$extra);
+        &print_td($r,16,$defbgone,$result,\@outpar,$mprefix,$which,\@typeoutpar,$display,'',$readonly,1,$extra);
+        &print_td($r,15,'#FFDDDD',$result,\@outpar,$mprefix,$which,\@typeoutpar,$display,'',$readonly,'',$extra);
+        &print_td($r,14,'#FFDDDD',$result,\@outpar,$mprefix,$which,\@typeoutpar,$display,'',$readonly,'',$extra);
+        &print_td($r,13,$defbgone,$result,\@outpar,$mprefix,$which,\@typeoutpar,$display,'',$readonly,'',$extra);
 
         if ($csec) {
-            &print_td($r,12,$defbgtwo,$result,\@outpar,$mprefix,$which,\@typeoutpar,$display);
-            &print_td($r,11,$defbgtwo,$result,\@outpar,$mprefix,$which,\@typeoutpar,$display);
-            &print_td($r,10,$defbgtwo,$result,\@outpar,$mprefix,$which,\@typeoutpar,$display);
-            &print_td($r,9,$defbgtwo,$result,\@outpar,$mprefix,$which,\@typeoutpar,$display);
+            &print_td($r,12,$defbgtwo,$result,\@outpar,$mprefix,$which,\@typeoutpar,$display,'',$readonly,'',$extra);
+            &print_td($r,10,$defbgtwo,$result,\@outpar,$mprefix,$which,\@typeoutpar,$display,'',$readonly,1,$extra);
+            &print_td($r,9,$defbgtwo,$result,\@outpar,$mprefix,$which,\@typeoutpar,$display,'',$readonly,'',$extra);
         }
 
         if ($cgroup) {
-            &print_td($r,8,$defbgthree,$result,\@outpar,$mprefix,$which,\@typeoutpar,$display,$noeditgrp);
-            &print_td($r,7,$defbgthree,$result,\@outpar,$mprefix,$which,\@typeoutpar,$display,$noeditgrp);
-            &print_td($r,6,$defbgthree,$result,\@outpar,$mprefix,$which,\@typeoutpar,$display,$noeditgrp);
-            &print_td($r,5,$defbgthree,$result,\@outpar,$mprefix,$which,\@typeoutpar,$display,$noeditgrp);
+            &print_td($r,8,$defbgthree,$result,\@outpar,$mprefix,$which,\@typeoutpar,$display,$noeditgrp,$readonly,'',$extra);
+            &print_td($r,6,$defbgthree,$result,\@outpar,$mprefix,$which,\@typeoutpar,$display,$noeditgrp,$readonly,1,$extra);
+            &print_td($r,5,$defbgthree,$result,\@outpar,$mprefix,$which,\@typeoutpar,$display,$noeditgrp.$readonly,'',$extra);
         }
 
         if ($uname) {
             if ($othergrp) {
                 $r->print($othergrp);
             }
-            &print_td($r,4,$defbgone,$result,\@outpar,$mprefix,$which,\@typeoutpar,$display);
-            &print_td($r,3,$defbgone,$result,\@outpar,$mprefix,$which,\@typeoutpar,$display);
-            &print_td($r,2,$defbgone,$result,\@outpar,$mprefix,$which,\@typeoutpar,$display);
-            &print_td($r,1,$defbgone,$result,\@outpar,$mprefix,$which,\@typeoutpar,$display);
+            &print_td($r,4,$defbgone,$result,\@outpar,$mprefix,$which,\@typeoutpar,$display,'',$readonly,'',$extra);
+            &print_td($r,2,$defbgone,$result,\@outpar,$mprefix,$which,\@typeoutpar,$display,'',$readonly,1,$extra);
+            &print_td($r,1,$defbgone,$result,\@outpar,$mprefix,$which,\@typeoutpar,$display,'',$readonly,'',$extra);
         }
-
     } # end of $parmlev if/else
-    $r->print('<td style="background-color:#CCCCFF;" align="center">'.$effective_parm.'</td>');
-
+    if (ref($recursinfo) eq 'ARRAY') {
+        my $rectitle = &mt('recursive');
+        if ((ref($maptitles) eq 'HASH') && (exists($maptitles->{$recursinfo->[2]}))) {
+            if ((ref($allmaps_inverted) eq 'HASH') && (exists($allmaps_inverted->{$recursinfo->[2]}))) {
+                $rectitle = &mt('set in: [_1]','"'.
+                                '<a href="javascript:pjumprec('."'".$allmaps_inverted->{$recursinfo->[2]}."',".
+                                                              "'$parmname','$$part{$which}'".');">'.
+                                $maptitles->{$recursinfo->[2]}.'</a>"');
+              
+                $numlinks ++;
+            }
+        }
+        my ($parmname)=($thismarker=~/\_([^\_]+)$/);
+        $effective_parm = &valout($recursinfo->[0],$recursinfo->[1]);
+        $r->print('<td style="background-color:#CCCCFF;" align="center">'.$effective_parm.
+                  '<br /><span class="LC_parm_recursive">'.$rectitle.'&nbsp;'.
+                  $effparm_level.'</span></td>');
+    } else {
+        if ($result) {
+            $effective_parm = &valout($outpar[$result],$typeoutpar[$result]);
+        }
+        if ($eff_groupparm) {
+            $effective_parm = $eff_groupparm;
+        }
+        $r->print('<td style="background-color:#CCCCFF;" align="center">'.$effective_parm.
+                  ($effparm_rec?'<br /><span class="LC_parm_recursive">'.&mt('recursive').
+                                '</span>':'').'</td>');
+    }
     if ($parmlev eq 'full') {
         my $sessionval=&Apache::lonnet::EXT('resource.'.$$part{$which}.
                                         '.'.$$name{$which},$$symbp{$rid});
@@ -1357,47 +1738,110 @@ sub print_row {
             $sessionvaltype=$$defaulttype{$which};
         }
         $r->print('<td style="background-color:#999999;" align="center"><font color="#FFFFFF">'.
-                  &valout($sessionval,$sessionvaltype,$$name{$which}).'&nbsp;'.
+                  &valout($sessionval,$sessionvaltype).'&nbsp;'.
                   '</font></td>');
     }
     $r->print('</tr>');
     $r->print("\n");
+    if (($numlinks) && (ref($reclinks))) {
+        $$reclinks = $numlinks;
+    }
 }
 
+# Prints a cell for table mode.
+#
+# FIXME: some of these parameter names are uninspired ($which and $value)
+# Also, it would make more sense to pass the display for this cell rather
+# than the full display hash and the key to use.
+#
+# @param {Apache2::RequestRec} $r - the Apache request
+# @param {integer} $which - level
+# @param {string} $defbg - cell background color
+# @param {integer} $result - the most specific level that is defined for that parameter
+# @param {array reference} $outpar - array level -> parameter value (when defined)
+# @param {string} $mprefix - resource id.'&'.part.'_'.parameter name.'&'
+# @param {string} $value - parameter key ('parameter_'.part.'_'.name)
+# @param {array reference} $typeoutpar - array level -> parameter type (when defined)
+# @param {hash reference} $display - parameter key -> full title for the parameter
+# @param {boolean} $noeditgrp - true if no edit is allowed for group level parameters
+# @param {boolean} $readonly -true if editing not allowed.
+# @param {boolean} $ismaplevel - true if level is for a map.
+# @param {strring} $extra - extra informatio to pass to plink.
 sub print_td {
-    my ($r,$which,$defbg,$result,$outpar,$mprefix,$value,$typeoutpar,$display,$noeditgrp)=@_;
-    $r->print('<td style="background-color:'.(($result==$which)?'#AAFFAA':$defbg).
+    my ($r,$which,$defbg,$result,$outpar,$mprefix,$value,$typeoutpar,$display,
+        $noeditgrp,$readonly,$ismaplevel,$extra)=@_;
+    my ($ineffect,$recursive,$currval,$currtype,$currlevel);
+    $ineffect = 0;
+    $currval = $$outpar[$which];
+    $currtype = $$typeoutpar[$which];
+    $currlevel = $which;
+    if (($result) && ($result == $which)) {
+        $ineffect = 1;
+    } 
+    if ($ismaplevel) {
+        if ($mprefix =~ /(hiddenresource|encrypturl)\&/) {
+            if (($result) && ($result == $which)) {
+                $recursive = 1;
+            }
+        } elsif ($$outpar[$which+1] ne '') {
+            $recursive = 1;
+            $currlevel = $which+1;
+            $currval = $$outpar[$currlevel];
+            $currtype = $$typeoutpar[$currlevel];
+            if (($result) && ($result == $currlevel)) {
+                $ineffect = 1;
+            }
+        }
+    }
+    $r->print('<td style="background-color:'.($ineffect?'#AAFFAA':$defbg).
               ';" align="center">');
     my $nolink = 0;
-    if ($which == 14 || $which == 15) {
-        $nolink = 1;
-    } elsif (($env{'request.course.sec'} ne '') && ($which > 12)) {
+    if ($readonly) {
         $nolink = 1;
-    } elsif ($which == 5 || $which ==  6 || $which == 7 || $which == 8) {
-        if ($noeditgrp) {
+    } else { 
+        if ($which == 14 || $which == 15 || $mprefix =~ /mapalias\&$/) {
             $nolink = 1;
-        }
-    } elsif ($mprefix =~ /availablestudent\&$/) {
-        if ($which > 4) {
-            $nolink = 1;
-        }
-    } elsif ($mprefix =~ /examcode\&$/) {
-        unless ($which == 2) {
+        } elsif (($env{'request.course.sec'} ne '') && ($which > 12)) {
             $nolink = 1;
+        } elsif ($which == 5 || $which ==  6 || $which == 7 || $which == 8) {
+            if ($noeditgrp) {
+                $nolink = 1;
+            }
+        } elsif ($mprefix =~ /availablestudent\&$/) {
+            if ($which > 4) {
+                $nolink = 1;
+            }
+        } elsif ($mprefix =~ /examcode\&$/) {
+            unless ($which == 2) {
+                $nolink = 1;
+            }
         }
     }
     if ($nolink) {
-        $r->print(&valout($$outpar[$which],$$typeoutpar[$which],$mprefix));
+        my ($parmname)=((split(/\&/,$mprefix))[1]=~/\_([^\_]+)$/);
+        $r->print(&valout($currval,$currtype));
     } else {
-        $r->print(&plink($$typeoutpar[$which],
-                         $$display{$value},$$outpar[$which],
-                         $mprefix."$which",'parmform.pres','psub'));
+        $r->print(&plink($currtype,
+                         $$display{$value},$currval,
+                         $mprefix.$currlevel,'parmform.pres','psub',$recursive,
+                         $extra));
     }
     $r->print('</td>'."\n");
 }
 
-sub print_usergroups {
-    my ($r,$what,$rid,$cgroup,$defbg,$usersgroups,$result,$courseopt) = @_;
+# Returns HTML and other info for the cell added when a user is selected
+# and that user is in several groups. This is the cell with the title "Control by other group".
+#
+# @param {string} $what - parameter part.'.'.parameter name
+# @param {string} $rid - resource id
+# @param {string} $cgroup - group name
+# @param {string} $defbg - cell background color
+# @param {array reference} $usersgroups - list of groups the user belongs to, if any
+# @param {integer} $result - level
+# @param {hash reference} $courseopt - course parameters hash (result of lonnet::get_courseresdata, dump of course's resourcedata.db)
+# @returns {Array} - array (parameter value for the other group, HTML for the cell, HTML with the value, name of the other group, true if recursive)
+sub check_other_groups {
+    my ($what,$rid,$cgroup,$defbg,$usersgroups,$result,$courseopt) = @_;
     my $courseid = $env{'request.course.id'};
     my $output;
     my $symb = &symbcache($rid);
@@ -1409,16 +1853,22 @@ sub print_usergroups {
           &parm_control_group($courseid,$usersgroups,$symbparm,$mapparm,
                               $recurseparm,$what,$courseopt);
     my $bgcolor = $defbg;
-    my $grp_parm;
+    my ($grp_parm,$grp_is_rec);
     if (($coursereply) && ($cgroup ne $resultgroup)) {
+        my ($parmname) = ($what =~ /\.([^.]+)$/);
         if ($result > 3) {
             $bgcolor = '#AAFFAA';
-            $grp_parm = &valout($coursereply,$resulttype,$what);
         }
-        $grp_parm = &valout($coursereply,$resulttype,$what);
+        $grp_parm = &valout($coursereply,$resulttype);
         $output = '<td style="background-color:'.$bgcolor.';" align="center">';
         if ($resultgroup && $resultlevel) {
-            $output .= '<small><b>'.$resultgroup.'</b> ('.$resultlevel.'): </small>'.$grp_parm;
+            if ($resultlevel eq 'recursive') {
+                $resultlevel = 'map/folder';
+                $grp_is_rec = 1;
+            }
+            $output .= '<small><b>'.$resultgroup.'</b> ('.$resultlevel.'): </small>'.$grp_parm.
+                       ($grp_is_rec?'<span class="LC_parm_recursive">'.&mt('recursive').'</span>':'');
+             
         } else {
             $output .= '&nbsp;';
         }
@@ -1426,9 +1876,20 @@ sub print_usergroups {
     } else {
         $output .= '<td style="background-color:'.$bgcolor.';">&nbsp;</td>';
     }
-    return ($coursereply,$output,$grp_parm,$resultgroup);
+    return ($coursereply,$output,$grp_parm,$resultgroup,$grp_is_rec);
 }
 
+# Looks for a group with a defined parameter for given user and parameter.
+# Used by check_other_groups.
+#
+# @param {string} $courseid - the course id
+# @param {array reference} $usersgroups - list of groups the user belongs to, if any
+# @param {string} $symbparm - end of the course parameter hash key for the group resource level
+# @param {string} $mapparm - end of the course parameter hash key for the group map/folder level
+# @param {string} $recurseparm - end of the course parameter hash key for the group recursive level
+# @param {string} $what - parameter part.'.'.parameter name
+# @param {hash reference} $courseopt - course parameters hash
+# @returns {Array} - (parameter value for the group, course parameter hash key for the parameter, name of the group, level name, parameter type)
 sub parm_control_group {
     my ($courseid,$usersgroups,$symbparm,$mapparm,$recurseparm,$what,$courseopt) = @_;
     my ($coursereply,$resultitem,$resultgroup,$resultlevel,$resulttype);
@@ -1455,6 +1916,21 @@ sub parm_control_group {
 
 
 
+# Extracts lots of information about all of the the course's resources into a variety of hashes, using lonnavmaps and lonnet::metadata.
+# All the parameters are references and are filled by the sub.
+#
+# @param {array reference} $ids - resource and map ids
+# @param {hash reference} $typep - hash resource/map id -> resource type (file extension)
+# @param {hash reference} $keyp - hash resource/map id -> comma-separated list of parameter keys from lonnet::metadata
+# @param {hash reference} $allparms - hash parameter name -> parameter title
+# @param {hash reference} $allparts - hash parameter part -> part title (a parameter part can be problem part.'_'.response id for response parameters)
+# @param {hash reference} $allmaps - hash map pc -> map src
+# @param {hash reference} $mapp - hash map pc or resource/map id -> enclosing map src
+# @param {hash reference} $symbp - hash map pc or resource/map id -> map src.'___(all)' for a map or resource symb for a resource
+# @param {hash reference} $maptitles - hash map pc or src -> map title (this should really be two separate hashes)
+# @param {hash reference} $uris - hash resource/map id -> resource src
+# @param {hash reference} $keyorder - hash parameter key -> appearance rank for this parameter when looking through every resource and every parameter, starting at 100 (integer)
+# @param {hash reference} $defkeytype - hash parameter name -> parameter type
 sub extractResourceInformation {
     my $ids = shift;
     my $typep = shift;
@@ -1481,23 +1957,27 @@ sub extractResourceInformation {
         my $srcf=$resource->src();
         $srcf=~/\.(\w+)$/;
         $$typep{$id}=$1;
+        my $toolsymb;
+        if ($srcf =~ /ext\.tool$/) {
+            $toolsymb = $resource->symb();
+        }
         $$keyp{$id}='';
         $$uris{$id}=$srcf;
 
-        foreach my $key (split(/\,/,&Apache::lonnet::metadata($srcf,'allpossiblekeys'))) {
+        foreach my $key (split(/\,/,&Apache::lonnet::metadata($srcf,'allpossiblekeys',$toolsymb))) {
             next if ($key!~/^parameter_/);
 
 # Hidden parameters
-            next if (&Apache::lonnet::metadata($srcf,$key.'.hidden') eq 'parm');
+            next if (&Apache::lonnet::metadata($srcf,$key.'.hidden',$toolsymb) eq 'parm');
 #
 # allparms is a hash of parameter names
 #
-            my $name=&Apache::lonnet::metadata($srcf,$key.'.name');
+            my $name=&Apache::lonnet::metadata($srcf,$key.'.name',$toolsymb);
             if (!exists($$allparms{$name}) || $$allparms{$name} =~ m/^\s*$/ ) {
                 my ($display,$parmdis);
                 $display = &standard_parameter_names($name);
                 if ($display eq '') {
-                    $display= &Apache::lonnet::metadata($srcf,$key.'.display');
+                    $display= &Apache::lonnet::metadata($srcf,$key.'.display',$toolsymb);
                     $parmdis = $display;
                     $parmdis =~ s/\s*\[Part.*$//g;
                 } else {
@@ -1506,14 +1986,14 @@ sub extractResourceInformation {
                 $$allparms{$name}=$parmdis;
                 if (ref($defkeytype)) {
                     $$defkeytype{$name}=
-                    &Apache::lonnet::metadata($srcf,$key.'.type');
+                    &Apache::lonnet::metadata($srcf,$key.'.type',$toolsymb);
                 }
             }
 
 #
 # allparts is a hash of all parts
 #
-            my $part= &Apache::lonnet::metadata($srcf,$key.'.part');
+            my $part= &Apache::lonnet::metadata($srcf,$key.'.part',$toolsymb);
             $$allparts{$part} = &mt('Part: [_1]',$part);
 #
 # Remember all keys going with this resource
@@ -1554,21 +2034,52 @@ sub extractResourceInformation {
     }
 }
 
+sub get_recursive {
+    my ($recurseup,$resdata,$what,$prefix) = @_; 
+    if ((ref($resdata) eq 'HASH') && (ref($recurseup) eq 'ARRAY')) {
+        foreach my $item (@{$recurseup}) {
+            my $norecursechk=$prefix.'.'.$item.'___(all).'.$what;
+            if (defined($resdata->{$norecursechk})) {
+                if ($what =~ /\.(encrypturl|hiddenresource)$/) {
+                    my $type = $resdata->{$norecursechk.'.type'};
+                    return [$resdata->{$norecursechk},$type,$item];
+                } else {
+                    last;
+                }
+            }
+            my $recursechk=$prefix.'.'.$item.'___(rec).'.$what;
+            if (defined($resdata->{$recursechk})) {
+                my $type = $resdata->{$recursechk.'.type'};
+                return [$resdata->{$recursechk},$type,$item];
+            }
+        }
+    }
+    return;
+}
 
 
+# Tells if a parameter type is a date.
+#
+# @param {string} type - parameter type
+# @returns{boolean} - true if it is a date
 sub isdateparm {
     my $type=shift;
     return (($type=~/^date/) && (!($type eq 'date_interval')));
 }
 
+# Determine if parameter type is specialized string type (i.e.,
+# not just string or string_yesno.  
+
+sub is_specialstring {
+    my $type=shift;
+    return (($type=~/^string_/) && (($type ne 'string_yesno')));
+}
+
+# Prints the HTML and Javascript to select parameters, with various shortcuts.
 #
-# parmmenu displays a list of the selected parameters.
-# It also offers a link to show/hide the complete parameter list
-# from which you can select all desired parameters.
-#
+# @param {Apache2::RequestRec} $r - the Apache request
 sub parmmenu {
-    my ($r,$allparms,$pscat,$keyorder)=@_;
-    my $tempkey;
+    my ($r)=@_;
     $r->print(<<ENDSCRIPT);
 <script type="text/javascript">
 // <![CDATA[
@@ -1581,7 +2092,7 @@ sub parmmenu {
             displayOverview = "none"
         }
 
-    for (i=0; i<document.forms.parmform.elements.length; i++) {
+        for (i=0; i<document.forms.parmform.elements.length; i++) {
             ele = document.forms.parmform.elements[i];
             if (ele.name == checkName) {
                 document.forms.parmform.elements[i].checked=value;
@@ -1590,56 +2101,54 @@ sub parmmenu {
     }
 
     function checkthis(thisvalue, checkName) {
-
-
-    for (i=0; i<document.forms.parmform.elements.length; i++) {
+        for (i=0; i<document.forms.parmform.elements.length; i++) {
             ele = document.forms.parmform.elements[i];
             if (ele.name == checkName) {
-        if (ele.value == thisvalue) {
-            document.forms.parmform.elements[i].checked=true;
-        }
+                if (ele.value == thisvalue) {
+                    document.forms.parmform.elements[i].checked=true;
+                }
             }
         }
     }
 
     function checkdates() {
-    checkthis('duedate','pscat');
-     checkthis('opendate','pscat');
-    checkthis('answerdate','pscat');
+        checkthis('duedate','pscat');
+        checkthis('opendate','pscat');
+        checkthis('answerdate','pscat');
     }
 
     function checkdisset() {
-     checkthis('discussend','pscat');
-     checkthis('discusshide','pscat');
-     checkthis('discussvote','pscat');
+        checkthis('discussend','pscat');
+        checkthis('discusshide','pscat');
+        checkthis('discussvote','pscat');
     }
 
     function checkcontdates() {
-    checkthis('contentopen','pscat');
-     checkthis('contentclose','pscat');
+        checkthis('contentopen','pscat');
+        checkthis('contentclose','pscat');
     }
 
     function checkvisi() {
-    checkthis('hiddenresource','pscat');
-     checkthis('encrypturl','pscat');
-    checkthis('problemstatus','pscat');
-    checkthis('contentopen','pscat');
-    checkthis('opendate','pscat');
+        checkthis('hiddenresource','pscat');
+        checkthis('encrypturl','pscat');
+        checkthis('problemstatus','pscat');
+        checkthis('contentopen','pscat');
+        checkthis('opendate','pscat');
     }
 
     function checkparts() {
-    checkthis('hiddenparts','pscat');
-    checkthis('display','pscat');
-    checkthis('ordered','pscat');
+        checkthis('hiddenparts','pscat');
+        checkthis('display','pscat');
+        checkthis('ordered','pscat');
     }
 
     function checkstandard() {
         checkall(false,'pscat');
-    checkdates();
-    checkthis('weight','pscat');
-    checkthis('maxtries','pscat');
-    checkthis('type','pscat');
-    checkthis('problemstatus','pscat');
+        checkdates();
+        checkthis('weight','pscat');
+        checkthis('maxtries','pscat');
+        checkthis('type','pscat');
+        checkthis('problemstatus','pscat');
     }
 
 // ]]>
@@ -1647,10 +2156,13 @@ sub parmmenu {
 ENDSCRIPT
 
     $r->print('<hr />');
-    &shortCuts($r,$allparms,$pscat,$keyorder);
+    &shortCuts($r);
     $r->print('<hr />');
 }
-# return a hash
+
+# Returns parameter categories.
+#
+# @returns {hash} - category name -> title in English
 sub categories {
     return ('time_settings' => 'Time Settings',
     'grading' => 'Grading',
@@ -1664,7 +2176,9 @@ sub categories {
     'misc' => 'Miscellaneous' ); 
 }
 
-# return a hash. Like a look-up table
+# Returns the category for each parameter.
+#
+# @returns {hash} - parameter name -> category name
 sub lookUpTableParameter {
  
     return ( 
@@ -1696,6 +2210,7 @@ sub lookUpTableParameter {
         'buttonshide' => 'hiding',
         'turnoffeditor' => 'hiding',
         'encrypturl' => 'hiding',
+        'deeplink' => 'hiding',
         'randomorder' => 'high_level_randomization',
         'randompick' => 'high_level_randomization',
         'available' => 'slots',
@@ -1711,10 +2226,14 @@ sub lookUpTableParameter {
         'lenient' => 'grading',
         'retrypartial' => 'tries',
         'discussvote'  => 'misc',
-        'examcode' => 'high_level_randomization', 
-    );    
+        'examcode' => 'high_level_randomization',
+    );
 }
 
+# Adds the given parameter name to an array of arrays listing all parameters for each category.
+#
+# @param {string} $name - parameter name
+# @param {array reference} $catList - array reference category name -> array reference of parameter names
 sub whatIsMyCategory {
     my $name = shift;
     my $catList = shift;
@@ -1738,6 +2257,11 @@ sub whatIsMyCategory {
     }        
 }
 
+# Sorts parameter names based on appearance order.
+#
+# @param {array reference} name - array reference of parameter names
+# @param {hash reference} $keyorder - hash parameter key -> appearance rank
+# @returns {Array} - array of parameter names
 sub keysindisplayorderCategory {
     my ($name,$keyorder)=@_;
     return sort {
@@ -1745,6 +2269,9 @@ sub keysindisplayorderCategory {
     } ( @{$name});
 }
 
+# Returns a hash category name -> order, starting at 1 (integer)
+#
+# @returns {hash}
 sub category_order {
     return (
         'time_settings' => 1,
@@ -1761,6 +2288,12 @@ sub category_order {
 
 }
 
+# Prints HTML to let the user select parameters, from a list of all parameters organized by category.
+#
+# @param {Apache2::RequestRec} $r - the Apache request
+# @param {hash reference} $allparms - hash parameter name -> parameter title
+# @param {array reference} $pscat - list of selected parameter names
+# @param {hash reference} $keyorder - hash parameter key -> appearance rank
 sub parmboxes {
     my ($r,$allparms,$pscat,$keyorder)=@_;
     my %categories = &categories();
@@ -1788,6 +2321,7 @@ sub parmboxes {
         $r->print('<div class="LC_Box LC_400Box">'
                  .'<h4 class="LC_hcell">'.&mt($categories{$key}).'</h4>'."\n");
         foreach my $tempkey (&keysindisplayorderCategory($categoryList{$key},$keyorder)) {
+            next if ($tempkey eq '');
             $r->print('<span class="LC_nobreak">'
                      .'<label><input type="checkbox" name="pscat" '
                      .'value="'.$tempkey.'" ');
@@ -1802,11 +2336,12 @@ sub parmboxes {
     }
     $r->print("\n");
 }
+
+# Prints HTML with shortcuts to select groups of parameters in one click, or deselect all.
 #
-# This function offers some links on the parameter section to get with one click a group a parameters
-#
+# @param {Apache2::RequestRec} $r - the Apache request
 sub shortCuts {
-    my ($r,$allparms,$pscat,$keyorder)=@_;
+    my ($r)=@_;
 
     # Parameter Selection
     $r->print(
@@ -1837,6 +2372,12 @@ sub shortCuts {
     );
 }
 
+# Prints HTML to select parts to view (except for the title).
+# Used by table and overview modes.
+#
+# @param {Apache2::RequestRec} $r - the Apache request
+# @param {hash reference} $allparts - hash parameter part -> part title
+# @param {array reference} $psprt - list of selected parameter parts
 sub partmenu {
     my ($r,$allparts,$psprt)=@_;
     my $selsize = 1+scalar(keys(%{$allparts}));
@@ -1846,7 +2387,7 @@ sub partmenu {
 
     $r->print('<select multiple="multiple" name="psprt" size="'.$selsize.'">');
     $r->print('<option value="all"');
-    $r->print(' selected="selected"') unless (@{$psprt});
+    $r->print(' selected="selected"') unless (@{$psprt}); # useless, the array is never empty
     $r->print('>'.&mt('All Parts').'</option>');
     my %temphash=();
     foreach (@{$psprt}) { $temphash{$_}=1; }
@@ -1864,6 +2405,18 @@ sub partmenu {
     $r->print('</select>');
 }
 
+# Prints HTML to select a user and/or a group.
+# Used by table mode.
+#
+# @param {Apache2::RequestRec} $r - the Apache request
+# @param {string} $uname - selected user name
+# @param {string} $id - selected Student/Employee ID
+# @param {string} $udom - selected user domain
+# @param {string} $csec - selected section name
+# @param {string} $cgroup - selected group name
+# @param {string} $parmlev - parameter level (Resource:'full', Map:'map', Course:'general')
+# @param {array reference} $usersgroups - list of groups the user belongs to, if any
+# @param {string} $pssymb - resource symb (when a single resource is selected)
 sub usermenu {
     my ($r,$uname,$id,$udom,$csec,$cgroup,$parmlev,$usersgroups,$pssymb)=@_;
     my $chooseopt=&Apache::loncommon::select_dom_form($udom,'udom').' '.
@@ -1878,7 +2431,7 @@ sub usermenu {
     if (($pssymb) || &Apache::lonnet::allowed('mdg',$env{'request.course.id'})) {
         %grouphash = &Apache::longroup::coursegroups();
     } elsif ($env{'request.course.groups'} ne '') {
-        map { $grouphash{$_} = 1; } split(/,/,$env{'request.course.groups'});
+        map { $grouphash{$_} = 1; } split(/:/,$env{'request.course.groups'});
     }
 
     my $g_s_header='';
@@ -1974,16 +2527,22 @@ function group_or_section(caller) {
                  ,$chooseopt));
 }
 
+# Prints HTML to select parameters from a list of all parameters.
+# Uses parmmenu and parmboxes.
+# Used by table and overview modes.
 #
-# This function shows on table Mode the available Parameters for the selected Resources
-#
+# @param {Apache2::RequestRec} $r - the Apache request
+# @param {hash reference} $allparms - hash parameter name -> parameter title
+# @param {array reference} $pscat - list of selected parameter names
+# @param {hash reference} $keyorder - hash parameter key -> appearance rank
+# @param {string} [$divid] - name used to give an id to the HTML element for the scroll box
 sub displaymenu {
-    my ($r,$allparms,$pscat,$psprt,$keyorder,$divid)=@_;
+    my ($r,$allparms,$pscat,$keyorder,$divid)=@_;
 
     $r->print(&Apache::lonhtmlcommon::start_pick_box());
     $r->print(&Apache::lonhtmlcommon::row_title(&mt('Select Parameters to View')));
 
-    &parmmenu($r,$allparms,$pscat,$keyorder);
+    &parmmenu($r);
     $r->print(&Apache::loncommon::start_scrollbox('480px','440px','200px',$divid));
     &parmboxes($r,$allparms,$pscat,$keyorder);
     $r->print(&Apache::loncommon::end_scrollbox());
@@ -1993,6 +2552,14 @@ sub displaymenu {
  
 }
 
+# Prints HTML to select a map.
+# Used by table mode and overview mode.
+#
+# @param {Apache2::RequestRec} $r - the Apache request
+# @param {hash reference} $allmaps - hash map pc -> map src
+# @param {string} $pschp - selected map pc, or 'all'
+# @param {hash reference} $maptitles - hash map id or src -> map title
+# @param {hash reference} $symbp - hash map pc or resource/map id -> map src.'___(all)' or resource symb
 sub mapmenu {
     my ($r,$allmaps,$pschp,$maptitles,$symbp)=@_;
     my %allmaps_inverted = reverse %$allmaps;
@@ -2144,8 +2711,12 @@ sub mapmenu {
     }
 }
 
-# Build up the select Box to choose if your parameter specification should work for the resource, map/folder or the course level
-# The value of default selection in the select box is set by the value that is given by the argument in $parmlev.
+# Prints HTML to select the parameter level (resource, map/folder or course).
+# Used by table and overview modes.
+#
+# @param {Apache2::RequestRec} $r - the Apache request
+# @param {hash reference} $alllevs - all parameter levels, hash English title -> value
+# @param {string} $parmlev - selected level value (full|map|general), or ''
 sub levelmenu {
     my ($r,$alllevs,$parmlev)=@_;
 
@@ -2163,6 +2734,11 @@ sub levelmenu {
 }
 
 
+# Returns HTML to select a section (with a select HTML element).
+# Used by overview mode.
+#
+# @param {array reference} $selectedsections - list of selected section ids
+# @returns {string}
 sub sectionmenu {
     my ($selectedsections)=@_;
     my %sectionhash = &Apache::loncommon::get_sections();
@@ -2188,13 +2764,18 @@ sub sectionmenu {
     return $output;
 }
 
+# Returns HTML to select a group (with a select HTML element).
+# Used by overview mode.
+#
+# @param {array reference} $selectedgroups - list of selected group names
+# @returns {string}
 sub groupmenu {
     my ($selectedgroups)=@_;
     my %grouphash;
     if (&Apache::lonnet::allowed('mdg',$env{'request.course.id'})) {
         %grouphash = &Apache::longroup::coursegroups();
     } elsif ($env{'request.course.groups'} ne '') {
-         map { $grouphash{$_} = 1; } split(/,/,$env{'request.course.groups'});
+         map { $grouphash{$_} = 1; } split(/:/,$env{'request.course.groups'});
     }
     return '' if (!%grouphash);
 
@@ -2210,11 +2791,23 @@ sub groupmenu {
     return $output;
 }
 
+# Returns an array with the given parameter split by comma.
+# Used by assessparms (table mode).
+#
+# @param {string} $keyp - the string to split
+# @returns {Array<string>}
 sub keysplit {
     my $keyp=shift;
     return (split(/\,/,$keyp));
 }
 
+# Returns the keys in $name, sorted using $keyorder.
+# Parameters are sorted by key, which means they are sorted by part first, then by name.
+# Used by assessparms (table mode) for resource level.
+#
+# @param {hash reference} $name - parameter key -> parameter name
+# @param {hash reference} $keyorder - hash parameter key -> appearance rank
+# @returns {Array<string>}
 sub keysinorder {
     my ($name,$keyorder)=@_;
     return sort {
@@ -2222,10 +2815,16 @@ sub keysinorder {
     } (keys(%{$name}));
 }
 
+# Returns the keys in $name, sorted using $keyorder to sort parameters by name first, then by part.
+# Used by assessparms (table mode) for map and general levels.
+#
+# @param {hash reference} $name - parameter key -> parameter name
+# @param {hash reference} $keyorder - hash parameter key -> appearance rank
+# @returns {Array<string>}
 sub keysinorder_bytype {
     my ($name,$keyorder)=@_;
     return sort {
-        my $ta=(split('_',$a))[-1];
+        my $ta=(split('_',$a))[-1]; # parameter name
         my $tb=(split('_',$b))[-1];
         if ($$keyorder{'parameter_0_'.$ta} == $$keyorder{'parameter_0_'.$tb}) {
             return ($a cmp $b);
@@ -2234,6 +2833,12 @@ sub keysinorder_bytype {
     } (keys(%{$name}));
 }
 
+# Returns the keys in $name, sorted using $keyorder to sort parameters by name.
+# Used by defaultsetter (parameter settings default actions).
+#
+# @param {hash reference} $name - hash parameter name -> parameter title
+# @param {hash reference} $keyorder - hash parameter key -> appearance rank
+# @returns {Array<string>}
 sub keysindisplayorder {
     my ($name,$keyorder)=@_;
     return sort {
@@ -2241,6 +2846,11 @@ sub keysindisplayorder {
     } (keys(%{$name}));
 }
 
+# Prints HTML with a choice to sort results by realm or student first.
+# Used by overview mode.
+#
+# @param {Apache2::RequestRec} $r - the Apache request
+# @param {string} $sortorder - realmstudent|studentrealm
 sub sortmenu {
     my ($r,$sortorder)=@_;
     $r->print('<br /><label><input type="radio" name="sortorder" value="realmstudent"');
@@ -2256,6 +2866,9 @@ sub sortmenu {
           '</label>');
 }
 
+# Returns a hash parameter key -> order (integer) giving the order for some parameters.
+#
+# @returns {hash}
 sub standardkeyorder {
     return ('parameter_0_opendate' => 1,
         'parameter_0_duedate' => 2,
@@ -2284,28 +2897,60 @@ sub standardkeyorder {
 
 
 # Table mode UI.
+# If nothing is selected, prints HTML forms to select resources, parts, parameters, user, group and section.
+# Otherwise, prints the parameter table, with a link to change the selection unless a single resource is selected.
+#
+# Parameters used from the request:
+# action - handler action (see handler), usermenu is checking for value 'settable'
+# cgroup - selected group
+# command - 'set': direct access to table mode for a resource
+# csec - selected section
+# dis - set when the "Update Display" button was used, used only to discard command 'set'
+# hideparmsel - can be 'hidden' to hide the parameter selection div initially and display the "Change Parameter Selection" link instead (which displays the div)
+# id - student/employee ID
+# parmlev - selected level (full|map|general)
+# part - selected part (unused ?)
+# pres_marker - &&&-separated parameter identifiers, "resource id&part_parameter name&level"
+# pres_type - &&&-separated parameter types
+# pres_value - &&&-separated parameter values
+# prevvisit - '1' if the user has submitted the form before
+# pscat (multiple values) - selected parameter names
+# pschp - selected map pc, or 'all'
+# psprt (multiple values) - list of selected parameter parts
+# filter - part of or whole parameter name, to be filtered out when parameters are displayed (unused ?)
+# recent_* (* = parameter type) - recent values entered by the user for parameter types
+# symb - resource symb (when a single resource is selected)
+# udom - selected user domain
+# uname - selected user name
+# url - used only with command 'set', the resource url
+#
+# @param {Apache2::RequestRec} $r - the Apache request
+# @param $parm_permission - ref to hash of permissions
+#                           if $parm_permission->{'edit'} is true, editing is allowed.
 sub assessparms {
 
-    my $r=shift;
+    my ($r,$parm_permission) = @_;
 
 
 # -------------------------------------------------------- Variable declaration
-    my @ids=();
-    my %symbp=();
-    my %mapp=();
-    my %typep=();
-    my %keyp=();
-    my %uris=();
-    my %maptitles=();
-    my %allmaps=();
-    my %alllevs=();
-
-    my $uname;
-    my $udom;
-    my $uhome;
-    my $csec;
-    my $cgroup;
-    my @usersgroups = ();
+    my @ids=(); # resource and map ids
+    my %symbp=(); # hash map pc or resource/map id -> map src.'___(all)' or resource symb
+    my %mapp=(); # hash map pc or resource/map id -> enclosing map src
+    my %typep=(); # hash resource/map id -> resource type (file extension)
+    my %keyp=(); # hash resource/map id -> comma-separated list of parameter keys
+    my %uris=(); # hash resource/map id -> resource src
+    my %maptitles=(); # hash map pc or src -> map title
+    my %allmaps=(); # hash map pc -> map src
+    my %allmaps_inverted=(); # hash map src -> map pc
+    my %alllevs=(); # hash English level title -> value
+
+    my $uname; # selected user name
+    my $udom; # selected user domain
+    my $uhome; # server with the user's files, or 'no_host'
+    my $csec; # selected section name
+    my $cgroup; # selected group name
+    my @usersgroups = (); # list of the user groups
+    my $numreclinks = 0;
 
     my $coursename=$env{'course.'.$env{'request.course.id'}.'.description'};
 
@@ -2313,8 +2958,8 @@ sub assessparms {
     $alllevs{'Map/Folder Level'}='map';
     $alllevs{'Course Level'}='general';
 
-    my %allparms;
-    my %allparts;
+    my %allparms; # hash parameter name -> parameter title
+    my %allparts; # hash parameter part -> part title
 # ------------------------------------------------------------------------------
 
 #
@@ -2339,7 +2984,7 @@ sub assessparms {
     if ($cgroup ne '') {
         unless (&Apache::lonnet::allowed('mdg',$env{'request.course.id'})) {
             if (($env{'request.course.groups'} eq '') || 
-                (!grep(/^\Q$cgroup\E$/,split(/,/,$env{'request.course.groups'})))) {
+                (!grep(/^\Q$cgroup\E$/,split(/:/,$env{'request.course.groups'})))) {
                 $noeditgrp = 1;
             }
         }
@@ -2425,7 +3070,21 @@ sub assessparms {
                         "'".$uname."'","'".$udom."'").
                     '</p>';
                 $uname='';
-                $csec=$env{'form.csec'};
+                if ($env{'request.course.sec'} ne '') {
+                    $csec=$env{'request.course.sec'};
+                } else {
+                    $csec=$env{'form.csec'};
+                }
+                $cgroup=$env{'form.cgroup'};
+            } elsif ($env{'request.course.sec'} ne '') {
+                if ($csec ne $env{'request.course.sec'}) {
+                    $message='<span class="LC_error">'.
+                              &mt("User '[_1]' at domain '[_2]' not in section '[_3]'",
+                                  $uname,$udom,$env{'request.course.sec'}).
+                              '</span>';
+                    $uname='';
+                    $csec=$env{'request.course.sec'};
+                }
                 $cgroup=$env{'form.cgroup'};
             } else {
                 my %name=&Apache::lonnet::userenvironment($udom,$uname,
@@ -2453,11 +3112,13 @@ sub assessparms {
                 \%mapp, \%symbp,\%maptitles,\%uris,
                 \%keyorder);
 
+    %allmaps_inverted = reverse(%allmaps);
+
     $mapp{'0.0'} = '';
     $symbp{'0.0'} = '';
 
 # ---------------------------------------------------------- Anything to store?
-    if ($env{'form.pres_marker'}) {
+    if ($env{'form.pres_marker'} && $parm_permission->{'edit'}) {
         my @markers=split(/\&\&\&/,$env{'form.pres_marker'});
         my @values=split(/\&\&\&/,$env{'form.pres_value'});
         my @types=split(/\&\&\&/,$env{'form.pres_type'});
@@ -2617,20 +3278,30 @@ sub assessparms {
                      .'</p>';
         }
     }
+
 #----------------------------------------------- if all selected, fill in array
-    if ($pscat[0] eq "all") {@pscat = (keys(%allparms));}
-    if (!@pscat) { @pscat=('duedate','opendate','answerdate','weight','maxtries','type','problemstatus') };
-    if ($psprt[0] eq "all" || !@psprt) {@psprt = (keys(%allparts));}
+    if ($pscat[0] eq "all") {
+        @pscat = (keys(%allparms));
+    }
+    if (!@pscat) {
+        @pscat=('duedate','opendate','answerdate','weight','maxtries','type','problemstatus')
+    };
+    if ($psprt[0] eq "all" || !@psprt) {
+        @psprt = (keys(%allparts));
+    }
 # ------------------------------------------------------------------ Start page
 
     my $crstype = &Apache::loncommon::course_type();
     &startpage($r,$pssymb,$crstype);
 
     foreach my $item ('tolerance','date_default','date_start','date_end',
-        'date_interval','int','float','string') {
+            'date_interval','int','float','string','string_lenient',
+            'string_examcode','string_deeplink','string_discussvote',
+            'string_useslots','string_problemstatus','string_ip',
+            'string_questiontype') {
         $r->print('<input type="hidden" value="'.
-          &HTML::Entities::encode($env{'form.recent_'.$item},'"&<>').
-          '" name="recent_'.$item.'" />');
+            &HTML::Entities::encode($env{'form.recent_'.$item},'"&<>').
+            '" name="recent_'.$item.'" />');
     }
 
     # ----- Start Parameter Selection
@@ -2640,14 +3311,15 @@ sub assessparms {
 <script type="text/javascript">
 // <![CDATA[
 function parmsel_show() {
-  document.getElementById('parmsel').style.display = "";
-  document.getElementById('parmsellink').style.display = "none";
+    document.getElementById('parmsel').style.display = "";
+    document.getElementById('parmsellink').style.display = "none";
 }
 // ]]>
 </script>
 ENDPARMSELSCRIPT
     
     if (!$pssymb) {
+        # No single resource selected, print forms to select things (hidden after first selection)
         my $parmselhiddenstyle=' style="display:none"';
         if($env{'form.hideparmsel'} eq 'hidden') {
            $r->print('<div id="parmsel"'.$parmselhiddenstyle.'>');
@@ -2676,7 +3348,7 @@ ENDPARMSELSCRIPT
 
         # Step 2
         $r->print(&Apache::lonhtmlcommon::topic_bar(2,&mt('Parameter Specification'),'parmstep2'));
-        &displaymenu($r,\%allparms,\@pscat,\@psprt,\%keyorder,'parmmenuscroll');
+        &displaymenu($r,\%allparms,\@pscat,\%keyorder,'parmmenuscroll');
 
         # Step 3
         $r->print(&Apache::lonhtmlcommon::topic_bar(3,&mt('User Specification (optional)'),'parmstep3'));
@@ -2743,15 +3415,19 @@ ENDPARMSELSCRIPT
         my @catmarker=map { tr|.|_|; 'parameter_'.$_; } @pscat;
         my $csuname=$env{'user.name'};
         my $csudom=$env{'user.domain'};
+        my $readonly = 1;
+        if ($parm_permission->{'edit'}) {
+            undef($readonly); 
+        }
 
         if ($parmlev eq 'full') {
 #
 # This produces the cascading table output of parameters
 #
-            my $coursespan=$csec?10:6;
-            my $userspan=4;
+            my $coursespan=$csec?8:5;
+            my $userspan=3;
             if ($cgroup ne '') {
-                $coursespan += 4;
+                $coursespan += 3;
             }
 
             $r->print(&Apache::loncommon::start_data_table());
@@ -2781,44 +3457,43 @@ ENDPARMSELSCRIPT
                 'femof'  => 'from Enclosing Map or Folder',
                 'gen'    => 'general',
                 'foremf' => 'for Enclosing Map or Folder',
-                'formfr' => 'for Map or Folder (recursive)',
                 'fr'     => 'for Resource'
             );
             $r->print(<<ENDTABLETWO);
 <th rowspan="3">$lt{'pie'}</th>
 <th rowspan="3">$lt{'csv'}<br />($csuname:$csudom)</th>
-</tr><tr><td colspan="5"></td><th colspan="3">$lt{'ic'}</th><th colspan="2">$lt{'rl'}</th>
+</tr><tr><td colspan="5"></td><th colspan="2">$lt{'ic'}</th><th colspan="2">$lt{'rl'}</th>
 <th colspan="1">$lt{'ic'}</th>
 
 ENDTABLETWO
             if ($csec) {
-                $r->print('<th colspan="4">'.
+                $r->print('<th colspan="3">'.
                 &mt("in Section")." $csec</th>");
             }
             if ($cgroup) {
-                $r->print('<th colspan="4">'.
+                $r->print('<th colspan="3">'.
                 &mt("in Group")." $cgroup</th>");
             }
             $r->print(<<ENDTABLEHEADFOUR);
 </tr><tr><th>$lt{'aut'}</th><th>$lt{'type'}</th>
 <th>$lt{'emof'}</th><th>$lt{'part'}</th><th>$lt{'pn'}</th>
-<th>$lt{'gen'}</th><th>$lt{'formfr'}</th><th>$lt{'foremf'}</th>
+<th>$lt{'gen'}</th><th>$lt{'foremf'}</th>
 <th>$lt{'def'}</th><th>$lt{'femof'}</th><th>$lt{'fr'}</th>
 ENDTABLEHEADFOUR
 
             if ($csec) {
-                $r->print('<th>'.$lt{'gen'}.'</th><th>'.$lt{'formfr'}.'</th><th>'.$lt{'foremf'}.'</th><th>'.$lt{'fr'}.'</th>');
+                $r->print('<th>'.$lt{'gen'}.'</th><th>'.$lt{'foremf'}.'</th><th>'.$lt{'fr'}.'</th>');
             }
 
             if ($cgroup) {
-                $r->print('<th>'.$lt{'gen'}.'</th><th>'.$lt{'formfr'}.'</th><th>'.&mt('foremf').'</th><th>'.$lt{'fr'}.'</th>');
+                $r->print('<th>'.$lt{'gen'}.'</th><th>'.$lt{'foremf'}.'</th><th>'.$lt{'fr'}.'</th>');
             }
 
             if ($uname) {
                 if (@usersgroups > 1) {
                     $r->print('<th>'.&mt('Control by other group?').'</th>');
                 }
-                $r->print('<th>'.$lt{'gen'}.'</th><th>'.$lt{'formfr'}.'</th><th>'.$lt{'foremf'}.'</th><th>'.$lt{'fr'}.'</th>');
+                $r->print('<th>'.$lt{'gen'}.'</th><th>'.$lt{'foremf'}.'</th><th>'.$lt{'fr'}.'</th>');
             }
 
             $r->print('</tr>');
@@ -2832,7 +3507,6 @@ ENDTABLEHEADFOUR
             foreach my $rid (@ids) {
 
                 my ($inmapid)=($rid=~/\.(\d+)$/);
-
                 if ((!$pssymb &&
                         (($pschp eq 'all') || ($allmaps{$pschp} eq $mapp{$rid})))
                         ||
@@ -2862,19 +3536,23 @@ ENDTABLEHEADFOUR
                     my %type=   ();
                     my %default=();
                     my $uri=&Apache::lonnet::declutter($uris{$rid});
+                    my $toolsymb;
+                    if ($uri =~ /ext\.tool$/) {
+                        $toolsymb = $symbp{$rid};
+                    }
 
                     my $filter=$env{'form.filter'};
                     foreach my $tempkeyp (&keysplit($keyp{$rid})) {
                         if (grep $_ eq $tempkeyp, @catmarker) {
-                            my $parmname=&Apache::lonnet::metadata($uri,$tempkeyp.'.name');
+                            my $parmname=&Apache::lonnet::metadata($uri,$tempkeyp.'.name',$toolsymb);
     # We may only want certain parameters listed
                             if ($filter) {
                                 unless ($filter=~/\Q$parmname\E/) { next; }
                             }
                             $name{$tempkeyp}=$parmname;
-                            $part{$tempkeyp}=&Apache::lonnet::metadata($uri,$tempkeyp.'.part');
+                            $part{$tempkeyp}=&Apache::lonnet::metadata($uri,$tempkeyp.'.part',$toolsymb);
 
-                            my $parmdis=&Apache::lonnet::metadata($uri,$tempkeyp.'.display');
+                            my $parmdis=&Apache::lonnet::metadata($uri,$tempkeyp.'.display',$toolsymb);
                             if ($allparms{$name{$tempkeyp}} ne '') {
                                 my $identifier;
                                 if ($parmdis =~ /(\s*\[Part.*)$/) {
@@ -2886,15 +3564,20 @@ ENDTABLEHEADFOUR
                             }
                             unless ($display{$tempkeyp}) { $display{$tempkeyp}=''; }
                             $display{$tempkeyp}.=' ('.$name{$tempkeyp}.')';
-                            $default{$tempkeyp}=&Apache::lonnet::metadata($uri,$tempkeyp);
-                            $type{$tempkeyp}=&Apache::lonnet::metadata($uri,$tempkeyp.'.type');
-                            $thistitle=&Apache::lonnet::metadata($uri,$tempkeyp.'.title');
+                            $default{$tempkeyp}=&Apache::lonnet::metadata($uri,$tempkeyp,$toolsymb);
+                            $type{$tempkeyp}=&Apache::lonnet::metadata($uri,$tempkeyp.'.type',$toolsymb);
+                            $thistitle=&Apache::lonnet::metadata($uri,$tempkeyp.'.title',$toolsymb);
                         }
                     }
                     my $totalparms=scalar(keys(%name));
                     if ($totalparms>0) {
                         my $firstrow=1;
                         my $title=&Apache::lonnet::gettitle($symbp{$rid});
+                        my $navmap = Apache::lonnavmaps::navmap->new();
+                        my @recurseup;
+                        if (ref($navmap) && $mapp{$rid}) {
+                            @recurseup = $navmap->recurseup_maps($mapp{$rid});
+                        }
                         $r->print('<tr><td style="background-color:'.$defbgone.';"'.
                              ' rowspan='.$totalparms.
                              '><tt><font size="-1">'.
@@ -2926,7 +3609,9 @@ ENDTABLEHEADFOUR
                             &print_row($r,$item,\%part,\%name,\%symbp,$rid,\%default,
                                        \%type,\%display,$defbgone,$defbgtwo,
                                        $defbgthree,$parmlev,$uname,$udom,$csec,
-                                       $cgroup,\@usersgroups,$noeditgrp);
+                                       $cgroup,\@usersgroups,$noeditgrp,$readonly,
+                                       \@recurseup,\%maptitles,\%allmaps_inverted,
+                                       \$numreclinks);
                         }
                     }
                 }
@@ -2972,6 +3657,11 @@ ENDTABLEHEADFOUR
 
                     if ($map eq $mapid) {
                         my $uri=&Apache::lonnet::declutter($uris{$rid});
+                        my $toolsymb;
+                        if ($uri =~ /ext\.tool$/) {
+                            $toolsymb = $symbp{$rid};
+                        }
+
 #                    $r->print("Keys: $keyp{$rid} <br />\n");
 
 #--------------------------------------------------------------------
@@ -2987,8 +3677,8 @@ ENDTABLEHEADFOUR
 
                             if ((grep $_ eq $fullkeyp, @catmarker) &&(!$name{$tempkeyp})) {
                                 $part{$tempkeyp}="0";
-                                $name{$tempkeyp}=&Apache::lonnet::metadata($uri,$fullkeyp.'.name');
-                                my $parmdis=&Apache::lonnet::metadata($uri,$fullkeyp.'.display');
+                                $name{$tempkeyp}=&Apache::lonnet::metadata($uri,$fullkeyp.'.name',$toolsymb);
+                                my $parmdis=&Apache::lonnet::metadata($uri,$fullkeyp.'.display',$toolsymb);
                                 if ($allparms{$name{$tempkeyp}} ne '') {
                                     my $identifier;
                                     if ($parmdis =~ /(\s*\[Part.*)$/) {
@@ -3001,8 +3691,8 @@ ENDTABLEHEADFOUR
                                 unless ($display{$tempkeyp}) { $display{$tempkeyp}=''; }
                                 $display{$tempkeyp}.=' ('.$name{$tempkeyp}.')';
                                 $display{$tempkeyp} =~ s/_\w+_/_0_/;
-                                $default{$tempkeyp}=&Apache::lonnet::metadata($uri,$fullkeyp);
-                                $type{$tempkeyp}=&Apache::lonnet::metadata($uri,$fullkeyp.'.type');
+                                $default{$tempkeyp}=&Apache::lonnet::metadata($uri,$fullkeyp,$toolsymb);
+                                $type{$tempkeyp}=&Apache::lonnet::metadata($uri,$fullkeyp.'.type',$toolsymb);
                               }
                         } # end loop through keys
                     }
@@ -3039,17 +3729,28 @@ ENDTABLEHEADFOUR
                 $r->print('<p>'.&Apache::loncommon::start_data_table()
                          .&Apache::loncommon::start_data_table_header_row()
                          .'<th>'.&mt('Parameter Name').'</th>'
-                         .'<th>'.&mt('Recursive Value').'</th>'
-                         .'<th>'.&mt('Non-Recursive Value').'</th>'
+                         .'<th>'.&mt('Value').'</th>'
                          .'<th>'.&mt('Parameter in Effect').'</th>'
                          .&Apache::loncommon::end_data_table_header_row()
                 );
 
+                my $navmap = Apache::lonnavmaps::navmap->new();
+                my @recurseup;
+                if (ref($navmap)) {
+                     my $mapres = $navmap->getByMapPc($mapid);
+                     if (ref($mapres)) {
+                         @recurseup = $navmap->recurseup_maps($mapres->src());
+                     }
+                }
+
+
                 foreach my $item (&keysinorder(\%name,\%keyorder)) {
                     $r->print(&Apache::loncommon::start_data_table_row());
                     &print_row($r,$item,\%part,\%name,\%symbp,$mapid,\%default,
                            \%type,\%display,$defbgone,$defbgtwo,$defbgthree,
-                           $parmlev,$uname,$udom,$csec,$cgroup,'',$noeditgrp);
+                           $parmlev,$uname,$udom,$csec,$cgroup,'',$noeditgrp,
+                           $readonly,\@recurseup,\%maptitles,\%allmaps_inverted,
+                           \$numreclinks);
                 }
                 $r->print(&Apache::loncommon::end_data_table().'</p>'
                          .'</div>'
@@ -3076,6 +3777,10 @@ ENDTABLEHEADFOUR
                 my $rid = $id;
 
                 my $uri=&Apache::lonnet::declutter($uris{$rid});
+                my $toolsymb;
+                if ($uri =~ /ext\.tool$/) {
+                    $toolsymb = $symbp{$rid};
+                }
 
 #--------------------------------------------------------------------
 # @catmarker contains list of all possible parameters including part #s
@@ -3089,8 +3794,8 @@ ENDTABLEHEADFOUR
                     $tempkeyp =~ s/_\w+_/_0_/;
                     if ((grep $_ eq $fullkeyp, @catmarker) &&(!$name{$tempkeyp})) {
                         $part{$tempkeyp}="0";
-                        $name{$tempkeyp}=&Apache::lonnet::metadata($uri,$fullkeyp.'.name');
-                        my $parmdis=&Apache::lonnet::metadata($uri,$fullkeyp.'.display');
+                        $name{$tempkeyp}=&Apache::lonnet::metadata($uri,$fullkeyp.'.name',$toolsymb);
+                        my $parmdis=&Apache::lonnet::metadata($uri,$fullkeyp.'.display',$toolsymb);
                         if ($allparms{$name{$tempkeyp}} ne '') {
                             my $identifier;
                             if ($parmdis =~ /(\s*\[Part.*)$/) {
@@ -3103,8 +3808,8 @@ ENDTABLEHEADFOUR
                         unless ($display{$tempkeyp}) { $display{$tempkeyp}=''; }
                         $display{$tempkeyp}.=' ('.$name{$tempkeyp}.')';
                         $display{$tempkeyp} =~ s/_\w+_/_0_/;
-                        $default{$tempkeyp}=&Apache::lonnet::metadata($uri,$fullkeyp);
-                        $type{$tempkeyp}=&Apache::lonnet::metadata($uri,$fullkeyp.'.type');
+                        $default{$tempkeyp}=&Apache::lonnet::metadata($uri,$fullkeyp,$toolsymb);
+                        $type{$tempkeyp}=&Apache::lonnet::metadata($uri,$fullkeyp.'.type',$toolsymb);
                     }
                 } # end loop through keys
             } # end loop through ids
@@ -3138,8 +3843,9 @@ ENDMAPONE
             foreach my $item (&keysinorder(\%name,\%keyorder)) {
                 $r->print(&Apache::loncommon::start_data_table_row());
                 &print_row($r,$item,\%part,\%name,\%symbp,$mapid,\%default,
-                       \%type,\%display,$defbgone,$defbgtwo,$defbgthree,
-                                   $parmlev,$uname,$udom,$csec,$cgroup,'',$noeditgrp);
+                           \%type,\%display,$defbgone,$defbgtwo,$defbgthree,
+                           $parmlev,$uname,$udom,$csec,$cgroup,'',$noeditgrp,
+                           $readonly);
             }
             $r->print(&Apache::loncommon::end_data_table()
                      .'</p>'
@@ -3148,6 +3854,25 @@ ENDMAPONE
         } # end of $parmlev eq general
     }
     $r->print('</form>');
+    if ($numreclinks) {
+        $r->print(<<"END");
+<form name="recurseform" action="/adm/parmset?action=settable" method="post">
+<input type="hidden" name="pschp" />
+<input type="hidden" name="pscat" />
+<input type="hidden" name="psprt" />
+<input type="hidden" name="hideparmsel" value="hidden" />
+</form>
+<script type="text/javascript">
+function pjumprec(rid,name,part) {
+    document.forms.recurseform.pschp.value = rid;
+    document.forms.recurseform.pscat.value = name;
+    document.forms.recurseform.psprt.value = part;
+    document.forms.recurseform.submit();
+    return false;
+}
+</script>
+END
+    }
     &endSettingsScreen($r);
     $r->print(&Apache::loncommon::end_page());
 } # end sub assessparms
@@ -3157,10 +3882,14 @@ ENDMAPONE
 ##################################################
 # OVERVIEW MODE
 ##################################################
-my $tableopen;
 
+my $tableopen; # boolean, true if HTML table is already opened
+
+# Returns HTML with the HTML table start tag and header, unless the table is already opened.
+# @param {boolean} $readonly - true if values cannot be edited (otherwise more columns are added)
+# @returns {string}
 sub tablestart {
-    my ($readonly) = @_;
+    my ($readonly,$is_map) = @_;
     if ($tableopen) {
         return '';
     } else {
@@ -3169,13 +3898,19 @@ sub tablestart {
         if ($readonly) {
             $output .= '<th>'.&mt('Current value').'</th>';
         } else {
-            $output .= '<th>'.&mt('Delete').'</th><th>'.&mt('Set to ...').'</th>';
+            $output .= '<th>'.&mt('Delete').'</th>'.
+                       '<th>'.&mt('Set to ...').'</th>';
+            if ($is_map) {
+                $output .= '<th>'.&mt('Recursive?').'</th>';
+            }
         }
         $output .= '</tr>';
         return $output;
     }
 }
 
+# Returns HTML with the HTML table end tag, unless the table is not opened.
+# @returns {string}
 sub tableend {
     if ($tableopen) {
         $tableopen=0;
@@ -3185,6 +3920,13 @@ sub tableend {
     }
 }
 
+# Reads course and user information.
+# If the context is looking for a scalar, returns the course parameters hash (result of lonnet::get_courseresdata, dump of course's resourcedata.db) with added student data from lonnet::get_userresdata (which reads the user's resourcedata.db).
+# The key for student data is modified with '[useropt:'.username.':'.userdomain.'].'.
+# If the context is looking for a list, returns a list with the scalar data and the class list.
+# @param {string} $crs - course number
+# @param {string} $dom - course domain
+# @returns {hash reference|Array}
 sub readdata {
     my ($crs,$dom)=@_;
 # Read coursedata
@@ -3213,8 +3955,24 @@ sub readdata {
 }
 
 
-# Setting
-
+# Stores parameter data, using form parameters directly.
+#
+# Uses the following form parameters. The variable part in the names is a resourcedata key (except for a modification for user data).
+# set_* (except settext, setipallow, setipdeny, setdeeplink) - set a parameter value
+# del_* - remove a parameter
+# datepointer_* - set a date parameter (value is key_* refering to a set of other form parameters)
+# dateinterval_* - set a date interval parameter (value refers to more form parameters)
+# key_* - date values
+# days_* - for date intervals
+# hours_* - for date intervals
+# minutes_* - for date intervals
+# seconds_* - for date intervals
+# done_* - for date intervals
+# typeof_* - parameter type
+# 
+# @param {Apache2::RequestRec} $r - the Apache request
+# @param {string} $crs - course number
+# @param {string} $dom - course domain
 sub storedata {
     my ($r,$crs,$dom)=@_;
 # Set userlevel immediately
@@ -3223,6 +3981,8 @@ sub storedata {
     my %newdata=();
     undef %newdata;
     my @deldata=();
+    my @delrec=();
+    my @delnonrec=();
     undef @deldata;
     my ($got_chostname,$chostname,$cmajor,$cminor);
     my $now = time;
@@ -3230,188 +3990,346 @@ sub storedata {
         if ($key =~ /^form\.([a-z]+)\_(.+)$/) {
             my $cmd=$1;
             my $thiskey=$2;
-            next if ($cmd eq 'settext' || $cmd eq 'setipallow' || $cmd eq 'setipdeny');
+            my ($altkey,$recursive,$tkey,$tkeyrec,$tkeynonrec);
+            next if ($cmd eq 'rec' || $cmd eq 'settext' || $cmd eq 'setipallow' || $cmd eq 'setipdeny' || $cmd eq 'setdeeplink');
+            if ((($cmd eq 'set') || ($cmd eq 'datepointer') || ($cmd eq 'dateinterval') || ($cmd eq 'del')) && 
+                 ($thiskey =~ /(?:sequence|page)\Q___(all)\E/)) {
+                unless ($thiskey =~ /(encrypturl|hiddenresource)$/) {
+                    $altkey = $thiskey;
+                    $altkey =~ s/\Q___(all)\E/___(rec)/;
+                    if ($env{'form.rec_'.$thiskey}) {
+                        $recursive = 1;
+                    }
+                }
+            }
             my ($tuname,$tudom)=&extractuser($thiskey);
-            my $tkey=$thiskey;
             if ($tuname) {
+                $tkey=$thiskey;
                 $tkey=~s/\.\[useropt\:$tuname\:$tudom\]\./\./;
+                if ($altkey) {
+                    $tkeynonrec = $tkey; 
+                    $tkeyrec = $altkey;
+                    $tkeyrec=~s/\.\[useropt\:$tuname\:$tudom\]\./\./;
+                }
             }
             if ($cmd eq 'set' || $cmd eq 'datepointer' || $cmd eq 'dateinterval') {
-            my ($data, $typeof, $text, $name, $valchk, $valmatch, $namematch);
-            if ($cmd eq 'set') {
-                $data=$env{$key};
-                $valmatch = '';
-                $valchk = $data;
-                $typeof=$env{'form.typeof_'.$thiskey};
-                $text = &mt('Saved modified parameter for');
-                if ($typeof eq 'string_questiontype') {
-                    $name = 'type';
-                } elsif ($typeof eq 'string_lenient') {
-                    $name = 'lenient';
-                    my $stringmatch = &standard_string_matches($typeof);
-                    if (ref($stringmatch) eq 'ARRAY') {
-                        foreach my $item (@{$stringmatch}) {
-                            if (ref($item) eq 'ARRAY') {
-                                my ($regexpname,$pattern) = @{$item};
-                                if ($pattern ne '') {
-                                    if ($data =~ /$pattern/) {
-                                        $valmatch = $regexpname;
-                                        $valchk = '';
-                                        last;
+                my ($data, $typeof, $text, $name, $valchk, $valmatch, $namematch);
+                if ($cmd eq 'set') {
+                    $data=$env{$key};
+                    $valmatch = '';
+                    $valchk = $data;
+                    $typeof=$env{'form.typeof_'.$thiskey};
+                    $text = &mt('Saved modified parameter for');
+                    if ($typeof eq 'string_questiontype') {
+                        $name = 'type';
+                    } elsif (($typeof eq 'string_lenient') || ($typeof eq 'string_deeplink')) {
+                        ($name) = ($typeof =~ /^string_(lenient|deeplink)$/);
+                        my $stringmatch = &standard_string_matches($typeof);
+                        if (ref($stringmatch) eq 'ARRAY') {
+                            foreach my $item (@{$stringmatch}) {
+                                if (ref($item) eq 'ARRAY') {
+                                    my ($regexpname,$pattern) = @{$item};
+                                    if ($pattern ne '') {
+                                        if ($data =~ /$pattern/) {
+                                            $valmatch = $regexpname;
+                                            $valchk = '';
+                                            last;
+                                        }
                                     }
                                 }
                             }
                         }
+                    } elsif ($typeof eq 'string_discussvote') {
+                        $name = 'discussvote';
+                    } elsif ($typeof eq 'string_examcode') {
+                        $name = 'examcode';
+                        if (&Apache::lonnet::validCODE($data)) {
+                            $valchk = 'valid';
+                        }
+                    } elsif ($typeof eq 'string_yesno') {
+                        if ($thiskey =~ /\.retrypartial$/) {
+                            $name = 'retrypartial';
+                        }
                     }
-                } elsif ($typeof eq 'string_discussvote') {
-                    $name = 'discussvote';
-                } elsif ($typeof eq 'string_examcode') {
-                    $name = 'examcode';
-                    if (&Apache::lonnet::validCODE($data)) {
-                        $valchk = 'valid';
-                    }
-                } elsif ($typeof eq 'string_yesno') {
-                    if ($thiskey =~ /\.retrypartial$/) {
-                        $name = 'retrypartial';
-                    }
-                }
-            } elsif ($cmd eq 'datepointer') {
-                $data=&Apache::lonhtmlcommon::get_date_from_form($env{$key});
-                $typeof=$env{'form.typeof_'.$thiskey};
-                $text = &mt('Saved modified date for');
-                if ($typeof eq 'date_start') {
-                    if ($thiskey =~ /\.printstartdate$/) {
-                        $name = 'printstartdate';
-                        if (($data) && ($data > $now)) {
-                            $valchk = 'future';
-                        }
-                    }
-                } elsif ($typeof eq 'date_end') {
-                    if ($thiskey =~ /\.printenddate$/) {
-                        $name = 'printenddate';
-                        if (($data) && ($data < $now)) {
-                            $valchk = 'past';
+                } elsif ($cmd eq 'datepointer') {
+                    $data=&Apache::lonhtmlcommon::get_date_from_form($env{$key});
+                    $typeof=$env{'form.typeof_'.$thiskey};
+                    $text = &mt('Saved modified date for');
+                    if ($typeof eq 'date_start') {
+                        if ($thiskey =~ /\.printstartdate$/) {
+                            $name = 'printstartdate';
+                            if (($data) && ($data > $now)) {
+                                $valchk = 'future';
+                            }
+                        }
+                    } elsif ($typeof eq 'date_end') {
+                        if ($thiskey =~ /\.printenddate$/) {
+                            $name = 'printenddate';
+                            if (($data) && ($data < $now)) {
+                                $valchk = 'past';
+                            }
                         }
                     }
-                }
-            } elsif ($cmd eq 'dateinterval') {
-                $data=&get_date_interval_from_form($thiskey);
-                if ($thiskey =~ /\.interval$/) {
-                    $name = 'interval';
-                    my $intervaltype = &get_intervaltype($name);
-                    my $intervalmatch = &standard_interval_matches($intervaltype);
-                    if (ref($intervalmatch) eq 'ARRAY') {
-                        foreach my $item (@{$intervalmatch}) {
-                            if (ref($item) eq 'ARRAY') {
-                                my ($regexpname,$pattern) = @{$item};
-                                if ($pattern ne '') {
-                                    if ($data =~ /$pattern/) {
-                                        $valmatch = $regexpname;
-                                        $valchk = '';
-                                        last;
+                } elsif ($cmd eq 'dateinterval') {
+                    $data=&get_date_interval_from_form($thiskey);
+                    if ($thiskey =~ /\.interval$/) {
+                        $name = 'interval';
+                        my $intervaltype = &get_intervaltype($name);
+                        my $intervalmatch = &standard_interval_matches($intervaltype);
+                        if (ref($intervalmatch) eq 'ARRAY') {
+                            foreach my $item (@{$intervalmatch}) {
+                                if (ref($item) eq 'ARRAY') {
+                                    my ($regexpname,$pattern) = @{$item};
+                                    if ($pattern ne '') {
+                                        if ($data =~ /$pattern/) {
+                                            $valmatch = $regexpname;
+                                            $valchk = '';
+                                            last;
+                                        }
                                     }
                                 }
                             }
                         }
                     }
+                    $typeof=$env{'form.typeof_'.$thiskey};
+                    $text = &mt('Saved modified date for');
                 }
-                $typeof=$env{'form.typeof_'.$thiskey};
-                $text = &mt('Saved modified date for');
-            }
-            if ($thiskey =~ m{\.(?:sequence|page)___\(rec\)}) {
-                $namematch = 'maplevelrecurse';
-            }
-            if (($name ne '') || ($namematch ne '')) {
-                my ($needsrelease,$needsnewer);
-                if ($name ne '') {
-                    $needsrelease = $Apache::lonnet::needsrelease{"parameter:$name:$valchk:$valmatch:"};
-                    if ($needsrelease) {
-                        unless ($got_chostname) {
-                            ($chostname,$cmajor,$cminor)=&parameter_release_vars();
-                            $got_chostname = 1;
-                        }
-                        $needsnewer = &parameter_releasecheck($name,$valchk,$valmatch,undef,
-                                                            $needsrelease,
-                                                            $cmajor,$cminor);
-                    }
+                if ($recursive) {
+                    $namematch = 'maplevelrecurse';
                 }
-                if ($namematch ne '') {
-                    if ($needsnewer) {
-                        undef($namematch);
-                    } else {
-                        my $currneeded;
+                if (($name ne '') || ($namematch ne '')) {
+                    my ($needsrelease,$needsnewer);
+                    if ($name ne '') {
+                        $needsrelease = $Apache::lonnet::needsrelease{"parameter:$name:$valchk:$valmatch:"};
                         if ($needsrelease) {
-                            $currneeded = $needsrelease;
-                        }
-                        $needsrelease =
-                            $Apache::lonnet::needsrelease{"parameter::::$namematch"};
-                        if (($needsrelease) && (($currneeded eq '') || ($needsrelease < $currneeded))) {
                             unless ($got_chostname) {
-                                ($chostname,$cmajor,$cminor) = &parameter_release_vars();
+                                ($chostname,$cmajor,$cminor)=&parameter_release_vars();
                                 $got_chostname = 1;
                             }
-                            $needsnewer = &parameter_releasecheck(undef,$valchk,$valmatch,$namematch,
-                                                                $needsrelease,$cmajor,$cminor);
-                        } else {
+                            $needsnewer = &parameter_releasecheck($name,$valchk,$valmatch,undef,
+                                                                $needsrelease,
+                                                                $cmajor,$cminor);
+                        }
+                    }
+                    if ($namematch ne '') {
+                        if ($needsnewer) {
                             undef($namematch);
+                        } else {
+                            my $currneeded;
+                            if ($needsrelease) {
+                                $currneeded = $needsrelease;
+                            }
+                            $needsrelease =
+                                $Apache::lonnet::needsrelease{"parameter::::$namematch"};
+                            if (($needsrelease) &&
+                                    (($currneeded eq '') || ($needsrelease < $currneeded))) {
+                                unless ($got_chostname) {
+                                    ($chostname,$cmajor,$cminor) = &parameter_release_vars();
+                                    $got_chostname = 1;
+                                }
+                                $needsnewer = &parameter_releasecheck(undef,$valchk,$valmatch,
+                                    $namematch, $needsrelease,$cmajor,$cminor);
+                            } else {
+                                undef($namematch);
+                            }
                         }
                     }
+                    if ($needsnewer) {
+                        $r->print('<br />'.&oldversion_warning($name,$namematch,$data,
+                                                            $chostname,$cmajor,
+                                                            $cminor,$needsrelease));
+                        next;
+                    }
                 }
-                if ($needsnewer) {
-                    $r->print('<br />'.&oldversion_warning($name,$namematch,$data,
-                                                        $chostname,$cmajor,
-                                                        $cminor,$needsrelease));
-                    next;
-                }
-            }
-            if (defined($data) and $$olddata{$thiskey} ne $data) {
+                my ($reconlychg,$haschange,$storekey);
                 if ($tuname) {
-                    if (&Apache::lonnet::put('resourcedata',{$tkey=>$data,
-                                        $tkey.'.type' => $typeof},
-                                $tudom,$tuname) eq 'ok') {
-                        &log_parmset({$tkey=>$data,$tkey.'.type' => $typeof},0,$tuname,$tudom);
-                        $r->print('<br />'.$text.' '.
-                            &Apache::loncommon::plainname($tuname,$tudom));
+                    my $ustorekey;
+                    if ($altkey) {
+                        if ($recursive) {
+                            if (exists($$olddata{$thiskey})) {
+                                if ($$olddata{$thiskey} eq $data) {
+                                    $reconlychg = 1;
+                                }
+                                &Apache::lonnet::del('resourcedata',[$tkeynonrec,$tkeynonrec.'.type'],$tudom,$tuname);
+                            }
+                            if (exists($$olddata{$altkey})) {
+                                if (defined($data) && $$olddata{$altkey} ne $data) {
+                                    $haschange = 1;
+                                }
+                            } elsif ((!$reconlychg) && ($data ne '')) {
+                                $haschange = 1;
+                            }
+                            $ustorekey = $tkeyrec;
+                        } else {
+                            if (exists($$olddata{$altkey})) {
+                                if ($$olddata{$altkey} eq $data) {
+                                    $reconlychg = 1;
+                                }
+                                &Apache::lonnet::del('resourcedata',[$tkeyrec,$tkeyrec.'.type'],$tudom,$tuname);
+                            }
+                            if (exists($$olddata{$thiskey})) {
+                                if (defined($data) && $$olddata{$thiskey} ne $data) {
+                                    $haschange = 1;
+                                }
+                            } elsif ((!$reconlychg) && ($data ne '')) {
+                                $haschange = 1;
+                            }
+                            $ustorekey = $tkeynonrec;
+                        }
                     } else {
-                        $r->print('<div class="LC_error">'.
-                            &mt('Error saving parameters').'</div>');
+                        if (exists($$olddata{$tkey})) {
+                            if (defined($data) && $$olddata{$tkey} ne $data) {
+                                $haschange = 1;
+                            }
+                            $ustorekey = $tkey;
+                        }
+                    }
+                    if ($haschange || $reconlychg)  {
+                        unless ($env{'form.del_'.$thiskey}) {
+                            if (&Apache::lonnet::put('resourcedata',{$ustorekey=>$data,
+                                                                     $ustorekey.'.type' => $typeof},
+                                                                     $tudom,$tuname) eq 'ok') {
+                                &log_parmset({$ustorekey=>$data,$ustorekey.'.type' => $typeof},0,$tuname,$tudom);
+                                $r->print('<br />'.$text.' '.
+                                          &Apache::loncommon::plainname($tuname,$tudom));
+                            } else {
+                                $r->print('<div class="LC_error">'.
+                                          &mt('Error saving parameters').'</div>');
+                            }
+                            &Apache::lonnet::devalidateuserresdata($tuname,$tudom);
+                        }
                     }
-                    &Apache::lonnet::devalidateuserresdata($tuname,$tudom);
                 } else {
-                    $newdata{$thiskey}=$data;
-                    $newdata{$thiskey.'.type'}=$typeof;
+                    if ($altkey) {
+                        if ($recursive) {
+                            if (exists($$olddata{$thiskey})) {
+                                if ($$olddata{$thiskey} eq $data) {
+                                    $reconlychg = 1;
+                                }
+                                push(@delnonrec,($thiskey,$thiskey.'.type'));
+                            }
+                            if (exists($$olddata{$altkey})) {
+                                if (defined($data) && $$olddata{$altkey} ne $data) {
+                                    $haschange = 1;
+                                }
+                            } elsif (($data ne '') && (!$reconlychg)) {
+                                $haschange = 1;
+                            }
+                            $storekey = $altkey;
+                        } else {
+                            if (exists($$olddata{$altkey})) {
+                                if ($$olddata{$altkey} eq $data) {
+                                    $reconlychg = 1;
+                                }
+                                push(@delrec,($altkey,$altkey.'.type'));
+                            } 
+                            if (exists($$olddata{$thiskey})) {
+                                if (defined($data) && $$olddata{$thiskey} ne $data) {
+                                    $haschange = 1;
+                                }
+                            } elsif (($data ne '') && (!$reconlychg)) {
+                                $haschange = 1;
+                            }
+                            $storekey = $thiskey;
+                        }
+                    } else {
+                        if (defined($data) && $$olddata{$thiskey} ne $data) {
+                            $haschange = 1;
+                            $storekey = $thiskey;
+                        }
+                    }
+                }
+                if ($reconlychg || $haschange) {
+                    unless ($env{'form.del_'.$thiskey}) {
+                        $newdata{$storekey}=$data;
+                        $newdata{$storekey.'.type'}=$typeof;
+                    }
                 }
-            }
             } elsif ($cmd eq 'del') {
                 if ($tuname) {
-                    if (&Apache::lonnet::del('resourcedata',[$tkey],$tudom,$tuname) eq 'ok') {
-                            &log_parmset({$tkey=>''},1,$tuname,$tudom);
-                        $r->print('<br />'.&mt('Deleted parameter for').' '.&Apache::loncommon::plainname($tuname,$tudom));
+                    my $error;
+                    if ($altkey) {  
+                        if (exists($$olddata{$altkey})) {
+                            if (&Apache::lonnet::del('resourcedata',[$tkeyrec,$tkeyrec.'.type'],$tudom,$tuname) eq 'ok') {
+                                &log_parmset({$tkeyrec=>''},1,$tuname,$tudom);
+                                if ($recursive) {
+                                    $r->print('<br />'.&mt('Deleted parameter for').' '.&Apache::loncommon::plainname($tuname,$tudom));
+                                }
+                            } elsif ($recursive) {
+                                $error = 1;
+                            }
+                        }
+                        if (exists($$olddata{$thiskey})) {
+                            if (&Apache::lonnet::del('resourcedata',[$tkeynonrec,$tkeynonrec.'.type'],$tudom,$tuname) eq 'ok') {
+                                &log_parmset({$tkeynonrec=>''},1,$tuname,$tudom);
+                                unless ($recursive) {
+                                    $r->print('<br />'.&mt('Deleted parameter for').' '.&Apache::loncommon::plainname($tuname,$tudom));
+                                }
+                            } elsif (!$recursive) {
+                                $error = 1;
+                            }
+                        }
                     } else {
+                        if (exists($$olddata{$thiskey})) {
+                            if (&Apache::lonnet::del('resourcedata',[$tkey,$tkey.'.type'],$tudom,$tuname) eq 'ok') {
+                                &log_parmset({$tkey=>''},1,$tuname,$tudom);
+                                $r->print('<br />'.&mt('Deleted parameter for').' '.&Apache::loncommon::plainname($tuname,$tudom));
+                            } else {
+                                $error = 1;
+                            }
+                        }
+                    }
+                    if ($error) { 
                         $r->print('<div class="LC_error">'.
                             &mt('Error deleting parameters').'</div>');
                     }
                     &Apache::lonnet::devalidateuserresdata($tuname,$tudom);
                 } else {
-                    push (@deldata,$thiskey,$thiskey.'.type');
+                    if ($altkey) {
+                        if (exists($$olddata{$altkey})) {
+                            unless (grep(/^\Q$altkey\E$/,@delrec)) {
+                                push(@deldata,($altkey,$altkey.'.type'));
+                            }
+                        }
+                        if (exists($$olddata{$thiskey})) {
+                            unless (grep(/^\Q$thiskey\E$/,@delnonrec)) {
+                                push(@deldata,($thiskey,$thiskey.'.type'));
+                            }
+                        }
+                    } elsif (exists($$olddata{$thiskey})) {
+                        push(@deldata,($thiskey,$thiskey.'.type'));
+                    }
                 }
             }
         }
     }
 # Store all course level
     my $delentries=$#deldata+1;
+    my @alldels;
+    if (@delrec) {
+        push(@alldels,@delrec);
+    }
+    if (@delnonrec) {
+        push(@alldels,@delnonrec);
+    }
+    if (@deldata) {
+        push(@alldels,@deldata);
+    }
     my @newdatakeys=keys(%newdata);
     my $putentries=$#newdatakeys+1;
-    if ($delentries) {
-        if (&Apache::lonnet::del('resourcedata',\@deldata,$dom,$crs) eq 'ok') {
-            my %loghash=map { $_ => '' } @deldata;
+    my ($delresult,$devalidate);
+    if (@alldels) {
+        if (&Apache::lonnet::del('resourcedata',\@alldels,$dom,$crs) eq 'ok') {
+            my %loghash=map { $_ => '' } @alldels;
             &log_parmset(\%loghash,1);
-            $r->print('<h2>'.&mt('Deleted [quant,_1,parameter]',$delentries/2).'</h2>');
-        } else {
+            if ($delentries) {
+                $r->print('<h2>'.&mt('Deleted [quant,_1,parameter]',$delentries/2).'</h2>');
+            }
+        } elsif ($delentries) {
             $r->print('<div class="LC_error">'.
                 &mt('Error deleting parameters').'</div>');
         }
-        &Apache::lonnet::devalidatecourseresdata($crs,$dom);
+        $devalidate = 1; 
     }
     if ($putentries) {
         if (&Apache::lonnet::put('resourcedata',\%newdata,$dom,$crs) eq 'ok') {
@@ -3421,15 +4339,27 @@ sub storedata {
             $r->print('<div class="LC_error">'.
                 &mt('Error saving parameters').'</div>');
         }
+        $devalidate = 1; 
+    }
+    if ($devalidate) {
         &Apache::lonnet::devalidatecourseresdata($crs,$dom);
     }
 }
 
+# Returns the username and domain from a key created in readdata from a resourcedata key.
+#
+# @param {string} $key - the key
+# @returns {Array}
 sub extractuser {
     my $key=shift;
     return ($key=~/^$env{'request.course.id'}.\[useropt\:($match_username)\:($match_domain)\]\./);
 }
 
+# Parses a parameter key and returns the components.
+#
+# @param {string} $key - 
+# @param {hash reference} $listdata - 
+# @return {Array} - (student, resource, part, parameter)
 sub parse_listdata_key {
     my ($key,$listdata) = @_;
     # split into student/section affected, and
@@ -3450,9 +4380,18 @@ sub parse_listdata_key {
     return ($student,$res,$part,$parm);
 }
 
-# Displays forms for the given data in overview mode (newoverview or overview).
+# Prints HTML with forms for the given parameter data in overview mode (newoverview or overview).
+#
+# @param {Apache2::RequestRec} $r - the Apache request
+# @param {hash reference} $resourcedata - parameter data returned by readdata
+# @param {hash reference} $listdata - data created in secgroup_lister, course id.[section id].part.name -> 1 or course id.[section id].part.name.type -> parameter type
+# @param {string} $sortorder - realmstudent|studentrealm
+# @param {string} $caller - name of the calling sub (overview|newoverview)
+# @param {hash reference} $classlist - from loncoursedata::get_classlist
+# @param {boolean} $readonly - true if editing not allowed
+# @returns{integer} - number of $listdata parameters processed
 sub listdata {
-    my ($r,$resourcedata,$listdata,$sortorder,$caller,$classlist)=@_;
+    my ($r,$resourcedata,$listdata,$sortorder,$caller,$classlist,$readonly)=@_;
     
 # Start list output
 
@@ -3463,6 +4402,7 @@ sub listdata {
     $tableopen=0;
     my $foundkeys=0;
     my %keyorder=&standardkeyorder();
+    my $readonlyall = $readonly;
 
     my ($secidx,%grouphash);
     if (($env{'request.course.sec'} ne '') && ($caller eq 'overview')) {
@@ -3470,11 +4410,11 @@ sub listdata {
         if (&Apache::lonnet::allowed('mdg',$env{'request.course.id'})) {
             %grouphash = &Apache::longroup::coursegroups();
         } elsif ($env{'request.course.groups'} ne '') {
-            map { $grouphash{$_} = 1; } split(/,/,$env{'request.course.groups'});
+            map { $grouphash{$_} = 1; } split(/:/,$env{'request.course.groups'});
         }
     }
 
-    foreach my $thiskey (sort {
+    foreach my $key (sort {
         my ($astudent,$ares,$apart,$aparm) = &parse_listdata_key($a,$listdata);
         my ($bstudent,$bres,$bpart,$bparm) = &parse_listdata_key($b,$listdata);
 
@@ -3514,17 +4454,18 @@ sub listdata {
 
         $result;
         
-    } keys(%{$listdata})) { # foreach my $thiskey
-
-        my $readonly;
+    } keys(%{$listdata})) { # foreach my $key
+        my $thiskey = $key;
         if ($$listdata{$thiskey.'.type'}) {
             my $thistype=$$listdata{$thiskey.'.type'};
             if ($$resourcedata{$thiskey.'.type'}) {
                 $thistype=$$resourcedata{$thiskey.'.type'};
             }
             my ($middle,$part,$name)=
-                ($thiskey=~/^$env{'request.course.id'}\.(?:(.+)\.)*([\w\s]+)\.(\w+)$/);
+                ($thiskey=~/^$env{'request.course.id'}\.(?:(.+)\.)*([\w\s\-]+)\.(\w+)$/);
             my $section=&mt('All Students');
+            $readonly = $readonlyall;
+            my $showval = $$resourcedata{$thiskey}; 
             if ($middle=~/^\[(.*)\]/) {
                 my $issection=$1;
                 if ($issection=~/^useropt\:($match_username)\:($match_domain)/) {
@@ -3557,12 +4498,37 @@ sub listdata {
             $middle=~s/\.+$//;
             $middle=~s/^\.+//;
             my $realm='<span class="LC_parm_scope_all">'.&mt('All Resources').'</span>';
-            if ($middle=~/^(.+)\_\_\_\((all|rec)\)$/) {
-                my $mapurl = $1;
-                my $maplevel = $2;
+            my ($is_map,$is_recursive,$mapurl,$maplevel);
+            if ($caller eq 'overview') {
+                if ($middle=~/^(.+)\_\_\_\((all|rec)\)$/) {
+                    $mapurl = $1;
+                    $maplevel = $2;
+                    $is_map = 1;
+                }
+            } elsif ($caller eq 'newoverview') {
+                if ($middle=~/^(.+)\_\_\_\((all)\)$/) {
+                    $mapurl = $1;
+                    $maplevel = $2;
+                    $is_map = 1;
+                }
+            }
+            if ($is_map) {
                 my $leveltitle = &mt('Folder/Map');
-                if ($maplevel eq 'rec') {
-                    $leveltitle = &mt('Recursive');
+                unless (($name eq 'hiddenresource') || ($name eq 'encrypturl')) {   
+                    if ($caller eq 'newoverview') {
+                        my $altkey = $thiskey;
+                        $altkey =~ s/\Q___(all)\E/___(rec)/;
+                        if ((exists($$resourcedata{$altkey})) & (!exists($$resourcedata{$thiskey}))) {
+                            $is_recursive = 1;
+                            if ($$resourcedata{$altkey.'.type'}) {
+                                $thistype=$$resourcedata{$altkey.'.type'};
+                            }
+                            $showval = $$resourcedata{$altkey};
+                        }
+                    } elsif (($caller eq 'overview') && ($maplevel eq 'rec')) {
+                        $thiskey =~ s/\Q___(rec)\E/___(all)/;
+                        $is_recursive = 1;
+                    }
                 }
                 $realm='<span class="LC_parm_scope_folder">'.$leveltitle.': '.&Apache::lonnet::gettitle($mapurl).' <br /><span class="LC_parm_folder">('.$mapurl.')</span></span>';
             } elsif ($middle) {
@@ -3604,7 +4570,7 @@ sub listdata {
     # Ready to print
     #
             my $parmitem = &standard_parameter_names($name);
-            $r->print(&tablestart($readonly).
+            $r->print(&tablestart($readonly,$is_map).
                 &Apache::loncommon::start_data_table_row().
                 '<td><b>'.&mt($parmitem).
                 '</b></td>');
@@ -3624,35 +4590,59 @@ sub listdata {
                 $r->print(
                     &Apache::lonhtmlcommon::date_setter('parmform',
                                                         $jskey,
-                                                        $$resourcedata{$thiskey},
+                                                        $showval,
                                                         '',1,$state));
                 unless  ($readonly) {
                     $r->print(
     '<input type="hidden" name="datepointer_'.$thiskey.'" value="'.$jskey.'" />'.
-    (($$resourcedata{$thiskey}!=0)?'<span class="LC_nobreak"><a href="/adm/parmset?&action=dateshift1&timebase='.$$resourcedata{$thiskey}.'">'.
+    (($showval!=0)?'<span class="LC_nobreak"><a href="/adm/parmset?&action=dateshift1&timebase='.$showval.'">'.
     &mt('Shift all dates based on this date').'</a></span>':'').
-    &date_sanity_info($$resourcedata{$thiskey})
+    &date_sanity_info($showval)
                     );
                 }
             } elsif ($thistype eq 'date_interval') {
                 $r->print(&date_interval_selector($thiskey,$name,
-                        $$resourcedata{$thiskey},$readonly));
+                          $showval,$readonly));
             } elsif ($thistype =~ m/^string/) {
                 $r->print(&string_selector($thistype,$thiskey,
-                        $$resourcedata{$thiskey},$name,$readonly));
+                          $showval,$name,$readonly));
             } else {
-                $r->print(&default_selector($thiskey,$$resourcedata{$thiskey},$readonly));
+                $r->print(&default_selector($thiskey,$showval,$readonly));
             }
             unless ($readonly) {
                 $r->print('<input type="hidden" name="typeof_'.$thiskey.'" value="'.
                         $thistype.'" />');
             }
-            $r->print('</td>'.&Apache::loncommon::end_data_table_row());
+            $r->print('</td>');
+            if ($is_map) {
+                if (($name eq 'encrypturl') || ($name eq 'hiddenresource')) {
+                    $r->print('<td><table><tr><td>'.&mt('Yes').'</td></tr></table></td>');
+                } else {
+                    my ($disabled,$recon,$recoff);
+                    if ($readonly) {
+                        $disabled = ' disabled="disabled"';
+                    }
+                    if ($is_recursive) {
+                        $recon = ' checked="checked"';
+                    } else {
+                        $recoff = ' checked="checked"';
+                    }
+                    $r->print('<td><table><tr><td><label><input type="radio" name="rec_'.$thiskey.'" value="1"'.$recon.$disabled.' />'.&mt('Yes').'</label>'.
+                              '</td><td><label><input type="radio" name="rec_'.$thiskey.'" value="0"'.$recoff.$disabled.' />'.&mt('No').'</label></td></tr></table></td>');
+                }
+            }
+            $r->print(&Apache::loncommon::end_data_table_row());
         }
     }
     return $foundkeys;
 }
 
+# Returns a string representing the interval, directly using form data matching the given key.
+# The returned string may also include information related to proctored exams.
+# Format: seconds['_done'[':'done button title':']['_proctor'['_'proctor key]]]
+#
+# @param {string} $key - suffix for form fields related to the interval
+# @returns {string}
 sub get_date_interval_from_form {
     my ($key) = @_;
     my $seconds = 0;
@@ -3685,6 +4675,12 @@ sub get_date_interval_from_form {
 }
 
 
+# Returns HTML to enter a text value for a parameter.
+#
+# @param {string} $thiskey - parameter key
+# @param {string} $showval - the current value
+# @param {boolean} $readonly - true if the field should not be made editable
+# @returns {string}
 sub default_selector {
     my ($thiskey, $showval, $readonly) = @_;
     my $disabled;
@@ -3694,6 +4690,12 @@ sub default_selector {
     return '<input type="text" name="set_'.$thiskey.'" value="'.$showval.'"'.$disabled.' />';
 }
 
+# Returns HTML to enter allow/deny rules related to IP addresses.
+#
+# @param {string} $thiskey - parameter key
+# @param {string} $showval - the current value
+# @param {boolean} $readonly - true if the fields should not be made editable
+# @returns {string}
 sub string_ip_selector {
     my ($thiskey, $showval, $readonly) = @_;
     my %access = (
@@ -3722,7 +4724,7 @@ sub string_ip_selector {
         @{$access{'deny'}} = ('');
     }
     my ($disabled,$addmore);
-    if ($disabled) {
+    if ($readonly) {
         $disabled=' disabled="disabled"';
     } else {
         $addmore = "\n".'<button class="LC_add_ipacc_button">'.&mt('Add more').'</button>';
@@ -3754,6 +4756,139 @@ sub string_ip_selector {
     return $output;
 }
 
+sub string_deeplink_selector {
+    my ($thiskey, $showval, $readonly) = @_;
+    my (@components,%values,@current,%titles,%options,%optiontext,%defaults,%posslti);
+    @components = ('listing','scope','urls');
+    %titles = &Apache::lonlocal::texthash (
+                  listing => 'In Contents and/or Gradebook',
+                  scope   => 'Access scope for link',
+                  urls    => 'Supported link types',
+              );
+    %options = (
+                   listing => ['full','absent','grades','details','datestatus'],
+                   scope   => ['res','map','rec'],
+                   urls    => ['any','only','key','lti'],
+               );
+    %optiontext = &Apache::lonlocal::texthash (
+                    full       => 'Listed (linked) in both',
+                    absent     => 'Not listed',
+                    grades     => 'Listed in grades only',
+                    details    => 'Listed (unlinked) in both',
+                    datestatus => 'Listed (unlinked) inc. status in both',
+                    res        => 'resource only',
+                    map        => 'enclosing map/folder',
+                    rec        => 'recursive map/folder',
+                    any        => 'regular + deep',
+                    only       => 'deep only',
+                    key        => 'deep with key',
+                    lti        => 'deep with LTI launch',
+                  );
+    if ($showval =~ /,/) {
+        @current = split(/,/,$showval);
+        ($values{'listing'}) = ($current[0] =~ /^(full|absent|grades|details|datestatus)$/);
+        ($values{'scope'}) = ($current[1] =~ /^(res|map|rec)$/);
+        ($values{'urls'}) = ($current[2] =~ /^(any|only|key:\w+|lti:\d+)$/);
+    } else {
+        $defaults{'listing'} = 'full';
+        $defaults{'scope'} = 'res';
+        $defaults{'urls'} = 'any';
+    }
+    my $disabled;
+    if ($readonly) {
+        $disabled=' disabled="disabled"';
+    }
+    my %lti = 
+        &Apache::lonnet::get_domain_lti($env{'course.'.$env{'request.course.id'}.'.domain'},
+                                        'provider');
+    foreach my $item (keys(%lti)) {
+        if (ref($lti{$item}) eq 'HASH') {
+            unless ($lti{$item}{'requser'}) {
+                $posslti{$item} = $lti{$item}{'consumer'};
+            }
+        }
+    }
+    my $output = '<input type="hidden" name="set_'.$thiskey.'" /><table><tr>';
+    foreach my $item ('listing','scope','urls') {
+        $output .= '<th>'.$titles{$item}.'</th>';
+    }
+    $output .= '</tr><tr>';
+    foreach my $item (@components) {
+        $output .= '<td>';
+        if ($item eq 'urls') {
+            my $selected = $values{$item};
+            foreach my $option (@{$options{$item}}) {
+                if ($option eq 'lti') {
+                    next unless (keys(%posslti));
+                }
+                my $checked;
+                if ($selected =~ /^\Q$option\E/) {
+                    $checked = ' checked="checked"';
+                }
+                my $onclick;
+                unless ($readonly) {
+                    my $esc_key = &js_escape($thiskey);
+                    $onclick = ' onclick="toggleDeepLink(this.form,'."'$item','$esc_key'".');"';
+                }
+                $output .= '<span class="LC_nobreak"><label>'.
+                           '<input type="radio" name="deeplink_'.$item.'_'.$thiskey.'" value="'.$option.'"'.$onclick.$disabled.$checked.' />'."\n".
+                           $optiontext{$option}.'</label>';
+                if ($option eq 'key') {
+                    my $visibility="hidden";
+                    my $currkey;
+                    if ($checked) {
+                        $visibility = "text";
+                        $currkey = (split(/\:/,$values{$item}))[1];
+                    }
+                    $output .= '&nbsp;'.
+                        '<input type="'.$visibility.'" name="deeplink_'.$option.'_'.$thiskey.'" id="deeplink_'.$option.'_'.$item.'_'.$thiskey.'" value="'.$currkey.'" size="6"'.$disabled.' />';
+                } elsif ($option eq 'lti') {
+                    my $display="none";
+                    my ($currlti,$blankcheck);
+                    if ($checked) {
+                        $display = 'inline-block';
+                        $currlti = (split(/\:/,$values{$item}))[1];
+                    } else {
+                        $blankcheck = ' selected="selected"';
+                    }
+                    $output .= '<div id="deeplinkdiv_'.$option.'_'.$item.'_'.$thiskey.'"'.
+                               ' style="display: '.$display.'">&nbsp;<select name="'.
+                               'deeplink_'.$option.'_'.$thiskey.'"'.$disabled.'>'.
+                               '<option value=""'.$blankcheck.'>'.&mt('Select Provider').'</option>'."\n";
+                    foreach my $lti (sort { $a <=> $b } keys(%posslti)) {
+                        my $selected;
+                        if ($lti == $currlti) {
+                            $selected = ' selected="selected"';
+                        }
+                        $output .= '<option value="'.$lti.'"'.$selected.'>'.$posslti{$lti}.'</option>';
+                    }
+                    $output .= '</select></div>';
+                }
+                $output .= '</span> ';
+            }
+        } else {
+            my $selected = $values{$item};
+            my $defsel;
+            if ($selected eq '') {
+                $defsel = ' selected="selected"';
+            }
+            $output .= '<select name="deeplink_'.$item.'_'.$thiskey.'"'.$disabled.'>'."\n".
+                       '<option value=""'.$defsel.'>'.&mt('Please select').'</option>'."\n";
+            foreach my $option (@{$options{$item}}) {
+                $output .= '<option value="'.$option.'"';
+                if ($option eq $selected) {
+                    $output .= ' selected="selected"';
+                }
+                $output .= '>'.$optiontext{$option}.'</option>';
+            }
+            $output .= '</select>';
+        }
+        $output .= '</td>';
+    }
+    $output .= '</tr></table>'."\n";
+    return $output;
+}
+
 
 { # block using some constants related to parameter types (overview mode)
 
@@ -3787,8 +4922,11 @@ my %strings =
                  ['no','No']],
      'string_ip'
              => [['_allowfrom_','Hostname(s), or IP(s) from which access is allowed'],
-                 ['_denyfrom_',], 'Hostname(s) or IP(s) from which access is disallowed'], 
-     );
+                 ['_denyfrom_','Hostname(s) or IP(s) from which access is disallowed']], 
+     'string_deeplink'
+             => [['on','Set choices for link protection, resource listing, and access scope']],
+    );
+   
 
 my %stringmatches = (
          'string_lenient'
@@ -3796,6 +4934,8 @@ my %stringmatches = (
          'string_ip'
               => [['_allowfrom_','[^\!]+'],
                   ['_denyfrom_','\!']],
+         'string_deeplink'
+              => [['on','^(full|absent|grades|details|datestatus)\,(res|map|rec)\,(any|only|key\:\w+|lti\:\d+)$']],
     );
 
 my %stringtypes = (
@@ -3805,8 +4945,14 @@ my %stringtypes = (
                     discussvote  => 'string_discussvote',
                     examcode     => 'string_examcode',
                     acc          => 'string_ip',
+                    deeplink     => 'string_deeplink',
                   );
 
+# Returns the possible values and titles for a given string type, or undef if there are none.
+# Used by courseprefs.
+#
+# @param {string} $string_type - a parameter type for strings
+# @returns {array reference} - 2D array, containing values and English titles
 sub standard_string_options {
     my ($string_type) = @_;
     if (ref($strings{$string_type}) eq 'ARRAY') {
@@ -3815,6 +4961,10 @@ sub standard_string_options {
     return;
 }
 
+# Returns regular expressions to match kinds of string types, or undef if there are none.
+#
+# @param {string} $string_type - a parameter type for strings
+# @returns {array reference}  - 2D array, containing regular expression names and regular expressions
 sub standard_string_matches {
     my ($string_type) = @_;
     if (ref($stringmatches{$string_type}) eq 'ARRAY') {
@@ -3823,6 +4973,10 @@ sub standard_string_matches {
     return;
 }
 
+# Returns a parameter type for a given parameter with a string type, or undef if not known.
+#
+# @param {string} $name - parameter name
+# @returns {string}
 sub get_stringtype {
     my ($name) = @_;
     if (exists($stringtypes{$name})) {
@@ -3831,6 +4985,14 @@ sub get_stringtype {
     return;
 }
 
+# Returns HTML to edit a string parameter.
+#
+# @param {string} $thistype - parameter type
+# @param {string} $thiskey - parameter key
+# @param {string} $showval - parameter current value
+# @param {string} $name - parameter name
+# @param {boolean} $readonly - true if the values should not be made editable
+# @returns {string}
 sub string_selector {
     my ($thistype, $thiskey, $showval, $name, $readonly) = @_;
 
@@ -3843,6 +5005,7 @@ sub string_selector {
             ($thistype eq 'string_lenient') ||
             ($thistype eq 'string_discussvote') ||
             ($thistype eq 'string_ip') ||
+            ($thistype eq 'string_deeplink') ||
             ($name eq 'retrypartial')) {
         my ($got_chostname,$chostname,$cmajor,$cminor); 
         foreach my $possibilities (@{ $strings{$thistype} }) {
@@ -3881,6 +5044,8 @@ sub string_selector {
 
     if ($thistype eq 'string_ip') {
         return &string_ip_selector($thiskey,$showval,$readonly); 
+    } elsif ($thistype eq 'string_deeplink') {
+        return &string_deeplink_selector($thiskey,$showval,$readonly);
     }
 
     my ($result,$disabled);
@@ -3996,6 +5161,10 @@ my %intervaltypes = (
                       interval => 'date_interval',
     );
 
+# Returns regular expressions to match kinds of interval type, or undef if there are none.
+#
+# @param {string} $interval_type - a parameter type for intervals
+# @returns {array reference}  - 2D array, containing regular expression names and regular expressions
 sub standard_interval_matches {
     my ($interval_type) = @_;
     if (ref($intervalmatches{$interval_type}) eq 'ARRAY') {
@@ -4004,6 +5173,10 @@ sub standard_interval_matches {
     return;
 }
 
+# Returns a parameter type for a given parameter with an interval type, or undef if not known.
+#
+# @param {string} $name - parameter name
+# @returns {string}
 sub get_intervaltype {
     my ($name) = @_;
     if (exists($intervaltypes{$name})) {
@@ -4012,6 +5185,11 @@ sub get_intervaltype {
     return;
 }
 
+# Returns the possible values and titles for a given interval type, or undef if there are none.
+# Used by courseprefs.
+#
+# @param {string} $interval_type - a parameter type for intervals
+# @returns {array reference} - 2D array, containing values and English titles
 sub standard_interval_options {
     my ($interval_type) = @_;
     if (ref($intervals{$interval_type}) eq 'ARRAY') {
@@ -4020,6 +5198,13 @@ sub standard_interval_options {
     return;
 }
 
+# Returns HTML to edit a date interval parameter.
+#
+# @param {string} $thiskey - parameter key
+# @param {string} $name - parameter name
+# @param {string} $showval - parameter current value
+# @param {boolean} $readonly - true if the values should not be made editable
+# @returns {string}
 sub date_interval_selector {
     my ($thiskey, $name, $showval, $readonly) = @_;
     my ($result,%skipval);
@@ -4102,17 +5287,21 @@ sub date_interval_selector {
                 $currprocdisplay = 'text';
             }
             my $onclick = ' onclick="toggleSecret(this.form,'."'done_','$thiskey'".');"';
+            my $disabled;
+            if ($readonly) {
+                $disabled = ' disabled="disabled"';
+            }
             $result .= '<br /><span class="LC_nobreak">'.&mt('Include "done" button').
-                       '<label><input type="radio" value="" name="done_'.$thiskey.'"'.$checkedoff.$onclick.' />'.
+                       '<label><input type="radio" value="" name="done_'.$thiskey.'"'.$checkedoff.$onclick.$disabled.' />'.
                        &mt('No').'</label>'.('&nbsp;'x2).
-                       '<label><input type="radio" value="_done" name="done_'.$thiskey.'"'.$checkedon.$onclick.' />'.
+                       '<label><input type="radio" value="_done" name="done_'.$thiskey.'"'.$checkedon.$onclick.$disabled.' />'.
                        &mt('Yes').'</label>'.('&nbsp;'x2).
-                       '<label><input type="radio" value="_done_proctor" name="done_'.$thiskey.'"'.$checkedproc.$onclick.' />'.
+                       '<label><input type="radio" value="_done_proctor" name="done_'.$thiskey.'"'.$checkedproc.$onclick.$disabled.' />'.
                        &mt('Yes, with proctor key').'</label>'.
                        '<input type="'.$currprocdisplay.'" id="done_'.$thiskey.'_proctorkey" '.
-                       'name="done_'.$thiskey.'_proctorkey" value="'.&HTML::Entities::encode($currproctorkey,'"<>&').'" /></span><br />'.
+                       'name="done_'.$thiskey.'_proctorkey" value="'.&HTML::Entities::encode($currproctorkey,'"<>&').'"'.$disabled.' /></span><br />'.
                        '<span class="LC_nobreak">'.&mt('Button text').': '.
-                       '<input type="text" name="done_'.$thiskey.'_buttontext" value="'.&HTML::Entities::encode($currdonetext,'"<>&').'" /></span>';
+                       '<input type="text" name="done_'.$thiskey.'_buttontext" value="'.&HTML::Entities::encode($currdonetext,'"<>&').'"'.$disabled.' /></span>';
         }
     }
     unless ($readonly) {
@@ -4121,6 +5310,16 @@ sub date_interval_selector {
     return $result;
 }
 
+# Returns HTML with a warning if a parameter requires a more recent version of LON-CAPA.
+#
+# @param {string} $name - parameter name
+# @param {string} $namematch - parameter level name (recognized: resourcelevel|maplevel|maplevelrecurse|courselevel)
+# @param {string} $value - parameter value
+# @param {string} $chostname - course server name
+# @param {integer} $cmajor - major version number
+# @param {integer} $cminor - minor version number
+# @param {string} $needsrelease - release version needed (major.minor)
+# @returns {string}
 sub oldversion_warning {
     my ($name,$namematch,$value,$chostname,$cmajor,$cminor,$needsrelease) = @_;
     my $standard_name = &standard_parameter_names($name);
@@ -4196,14 +5395,28 @@ sub oldversion_warning {
 } # end of block using some constants related to parameter types
 
 
-#
-# Shift all start and end dates by $shift
-#
 
+# Shifts all start and end dates in the current course by $shift.
+#
+# @param {integer} $shift - time to shift, in seconds
+# @returns {string} - error name or 'ok'
 sub dateshift {
-    my ($shift)=@_;
+    my ($shift,$numchanges)=@_;
     my $dom = $env{'course.'.$env{'request.course.id'}.'.domain'};
     my $crs = $env{'course.'.$env{'request.course.id'}.'.num'};
+    my $sec = $env{'request.course.sec'};
+    my $secgrpregex;
+    if ($sec ne '') {
+        my @groups;
+        if ($env{'request.course.groups'} ne '') {
+            @groups = split(/:/,$env{'request.course.groups'});
+        }
+        if (@groups) {
+            $secgrpregex = '(?:'.join('|',($sec,@groups)).')';
+        } else {
+            $secgrpregex = $sec;
+        }
+    }
     my %data=&Apache::lonnet::dump('resourcedata',$dom,$crs);
 # ugly retro fix for broken version of types
     foreach my $key (keys(%data)) {
@@ -4218,7 +5431,11 @@ sub dateshift {
 # go through all parameters and look for dates
     foreach my $key (keys(%data)) {
        if ($data{$key.'.type'}=~/^date_(start|end)$/) {
+          if ($sec ne '') {
+              next unless ($key =~ /^$env{'request.course.id'}\.\[$secgrpregex\]\./);
+          }
           my $newdate=$data{$key}+$shift;
+          $$numchanges ++;
           $storecontent{$key}=$newdate;
        }
     }
@@ -4231,12 +5448,19 @@ sub dateshift {
     return $reply;
 }
 
+# Overview mode UI to edit course parameters.
+#
+# @param {Apache2::RequestRec} $r - the Apache request
 sub newoverview {
-    my ($r) = @_;
+    my ($r,$parm_permission) = @_;
 
     my $dom = $env{'course.'.$env{'request.course.id'}.'.domain'};
     my $crs = $env{'course.'.$env{'request.course.id'}.'.num'};
     my $crstype =  $env{'course.'.$env{'request.course.id'}.'.type'};
+    my $readonly = 1;
+    if ($parm_permission->{'edit'}) {
+        undef($readonly);
+    }
     &Apache::lonhtmlcommon::add_breadcrumb({href=>'/adm/parmset?action=setoverview',
         text=>"Overview Mode"});
 
@@ -4253,6 +5477,7 @@ sub newoverview {
             &validateparms_js()."\n".
             &ipacc_boxes_js()."\n".
             &done_proctor_js()."\n".
+            &deeplink_js()."\n".
 '// ]]>
 </script>
 ';
@@ -4395,15 +5620,31 @@ ENDOVER
 
 # List data
 
-        &listdata($r,$resourcedata,$listdata,$sortorder,'newoverview');
+        &listdata($r,$resourcedata,$listdata,$sortorder,'newoverview',undef,$readonly);
     }
-    $r->print(&tableend().
-         ((($env{'form.store'}) || ($env{'form.dis'}))?'<p><input type="submit" name="store" value="'.&mt('Save').'" /></p>':'').
-          '</form>');
+    $r->print(&tableend());
+    unless ($readonly) {
+        $r->print( ((($env{'form.store'}) || ($env{'form.dis'}))?'<p><input type="submit" name="store" value="'.&mt('Save').'" /></p>':'') );
+    }
+    $r->print('</form>');
     &endSettingsScreen($r);
     $r->print(&Apache::loncommon::end_page());
 }
 
+# Fills $listdata with parameter information.
+# Keys use the format course id.[section id].part.name and course id.[section id].part.name.type.
+# The non-type value is always 1.
+#
+# @param {string} $cat - parameter name
+# @param {string} $pschp - selected map pc, or 'all'
+# @param {string} $parmlev - selected level value (full|map|general), or ''
+# @param {hash reference} $listdata - the parameter data that will be modified
+# @param {array reference} $psprt - selected parts
+# @param {array reference} $selections - selected sections
+# @param {hash reference} $defkeytype - hash parameter name -> parameter type
+# @param {hash reference} $allmaps - hash map pc -> map src
+# @param {array reference} $ids - resource and map ids
+# @param {hash reference} $symbp - hash map pc or resource/map id -> map src.'___(all)' or resource symb
 sub secgroup_lister {
     my ($cat,$pschp,$parmlev,$listdata,$psprt,$selections,$defkeytype,$allmaps,$ids,$symbp) = @_;
     foreach my $item (@{$selections}) {
@@ -4424,9 +5665,6 @@ sub secgroup_lister {
                     my $newparmkey=$rootparmkey.'.'.$$allmaps{$mapid}.'___(all).'.$part.'.'.$cat;
                     $$listdata{$newparmkey}=1;
                     $$listdata{$newparmkey.'.type'}=$$defkeytype{$cat};
-                    $newparmkey=$rootparmkey.'.'.$$allmaps{$mapid}.'___(rec).'.$part.'.'.$cat;
-                    $$listdata{$newparmkey}=1;
-                    $$listdata{$newparmkey.'.type'}=$$defkeytype{$cat};
                 }
             } else {
 # resource-level parameter
@@ -4442,18 +5680,26 @@ sub secgroup_lister {
     }
 }
 
-# Display all existing parameter settings.
+# UI to edit parameter settings starting with a list of all existing parameters.
+# (called by setoverview action)
+#
+# @param {Apache2::RequestRec} $r - the Apache request
 sub overview {
-    my ($r) = @_;
+    my ($r,$parm_permission) = @_;
     my $dom = $env{'course.'.$env{'request.course.id'}.'.domain'};
     my $crs = $env{'course.'.$env{'request.course.id'}.'.num'};
     my $crstype = $env{'course.'.$env{'request.course.id'}.'.type'};
+    my $readonly = 1;
+    if ($parm_permission->{'edit'}) {
+        undef($readonly);
+    }
     my $js = '<script type="text/javascript">'."\n".
              '// <![CDATA['."\n".
              &toggleparmtextbox_js()."\n".
              &validateparms_js()."\n".
              &ipacc_boxes_js()."\n".
              &done_proctor_js()."\n".
+             &deeplink_js()."\n".
              '// ]]>'."\n".
              '</script>'."\n";
     &Apache::lonhtmlcommon::add_breadcrumb({href=>'/adm/parmset?action=setoverview',
@@ -4470,7 +5716,9 @@ sub overview {
 
 # Store modified
 
-    &storedata($r,$crs,$dom);
+    unless ($readonly) {
+        &storedata($r,$crs,$dom);
+    }
 
 # Read modified data
 
@@ -4481,15 +5729,29 @@ sub overview {
     unless ($sortorder) { $sortorder='realmstudent'; }
     &sortmenu($r,$sortorder);
 
+    my $submitbutton = '<input type="submit" value="'.&mt('Save').'" />';
+
+    if ($readonly) {
+        $r->print('<p>'.$submitbutton.'</p>');
+    }
+
 # List data
 
-    my $foundkeys=&listdata($r,$resourcedata,$resourcedata,$sortorder,'overview',$classlist);
-    $r->print(&tableend().'<p>'.
-    ($foundkeys?'<input type="submit" value="'.&mt('Save').'" />':'<span class="LC_info">'.&mt('There are no parameters.').'</span>').'</p></form>'.
-          &Apache::loncommon::end_page());
+    my $foundkeys=&listdata($r,$resourcedata,$resourcedata,$sortorder,'overview',$classlist,$readonly);
+    $r->print(&tableend().'<p>');
+    if ($foundkeys) {
+        unless ($readonly) {
+            $r->print('<p>'.$submitbutton.'</p>');
+        }
+    } else {
+        $r->print('<p class="LC_info">'.&mt('There are no parameters.').'</p>');
+    }
+    $r->print('</form>'.&Apache::loncommon::end_page());
 }
 
 # Unused sub.
+#
+# @param {Apache2::RequestRec} $r - the Apache request
 sub clean_parameters {
     my ($r) = @_;
     my $dom = $env{'course.'.$env{'request.course.id'}.'.domain'};
@@ -4549,10 +5811,8 @@ ENDOVER
                 $r->print(&mt('All users'));
             } elsif ($data{'scope_type'} eq 'user') {
                 $r->print(&mt('User: [_1]',join(':',@{$data{'scope'}})));
-            } elsif ($data{'scope_type'} eq 'section') {
-                $r->print(&mt('Section: [_1]',$data{'scope'}));
-            } elsif ($data{'scope_type'} eq 'group') {
-                $r->print(&mt('Group: [_1]',$data{'scope'}));
+            } elsif ($data{'scope_type'} eq 'secgroup') {
+                $r->print(&mt('Group/Section: [_1]',$data{'scope'}));
             }
             $r->print('<br />');
             if ($data{'realm_type'} eq 'all') {
@@ -4578,15 +5838,30 @@ ENDOVER
     $r->print(&Apache::loncommon::end_page());
 }
 
-# Overview mode, UI to shift all dates.
+# UI to shift all dates (called by dateshift1 action).
+# Used by overview mode.
+#
+# @param {Apache2::RequestRec} $r - the Apache request
 sub date_shift_one {
     my ($r) = @_;
     my $dom = $env{'course.'.$env{'request.course.id'}.'.domain'};
     my $crs = $env{'course.'.$env{'request.course.id'}.'.num'};
     my $crstype = $env{'course.'.$env{'request.course.id'}.'.type'};
-
+    my $sec = $env{'request.course.sec'};
     &Apache::lonhtmlcommon::add_breadcrumb({href=>'/adm/parmset?action=dateshift1&timebase='.$env{'form.timebase'},
         text=>"Shifting Dates"});
+    my $submit_text = &mt('Shift all dates accordingly');
+    if ($sec ne '') {
+        my @groups;
+        if ($env{'request.course.groups'} ne '') {
+            @groups = split(/:/,$env{'request.course.groups'});
+        }
+        if (@groups) {
+            $submit_text = &mt("Shift dates set just for your section/group(s), accordingly");
+        } else {
+            $submit_text = &mt("Shift dates set just for your section, accordingly");
+        }
+    }
     my $start_page=&Apache::loncommon::start_page('Shift Dates');
     my $breadcrumbs = &Apache::lonhtmlcommon::breadcrumbs('Shift');
     $r->print($start_page.$breadcrumbs);
@@ -4602,16 +5877,19 @@ sub date_shift_one {
               '</td></tr></table>'.
               '<input type="hidden" name="action" value="dateshift2" />'.
               '<input type="hidden" name="timebase" value="'.$env{'form.timebase'}.'" />'.
-              '<input type="submit" value="'.&mt('Shift all dates accordingly').'" /></form>');
+              '<input type="submit" value="'.$submit_text.'" /></form>');
     &endSettingsScreen($r);
     $r->print(&Apache::loncommon::end_page());
 }
 
-# Overview mode, UI to shift all dates (second form).
+# UI to shift all dates (second form).
+#
+# @param {Apache2::RequestRec} $r - the Apache request
 sub date_shift_two {
     my ($r) = @_;
     my $dom = $env{'course.'.$env{'request.course.id'}.'.domain'};
     my $crs = $env{'course.'.$env{'request.course.id'}.'.num'};
+    my $sec = $env{'request.course.sec'};
     my $crstype = $env{'course.'.$env{'request.course.id'}.'.type'};
     &Apache::lonhtmlcommon::add_breadcrumb({href=>'/adm/parmset?action=dateshift1&timebase='.$env{'form.timebase'},
         text=>"Shifting Dates"});
@@ -4620,14 +5898,47 @@ sub date_shift_two {
     $r->print($start_page.$breadcrumbs);
     &startSettingsScreen($r,'parmset',$crstype);
     my $timeshifted=&Apache::lonhtmlcommon::get_date_from_form('timeshifted');
-    $r->print('<h2>'.&mt('Shift Dates').'</h2>'.
-              '<p>'.&mt('Shifting all dates such that [_1] becomes [_2]',
-              &Apache::lonlocal::locallocaltime($env{'form.timebase'}),
-              &Apache::lonlocal::locallocaltime($timeshifted)).'</p>');
+    $r->print('<h2>'.&mt('Shift Dates').'</h2>');
+    if ($sec ne '') {
+        my @groups;
+        if ($env{'request.course.groups'} ne '') {
+            @groups = split(/:/,$env{'request.course.groups'});
+        }
+        if (@groups) {
+            $r->print('<p>'.
+                      &mt("Shift dates set just for your section/group(s), such that [_1] becomes [_2]",
+                          &Apache::lonlocal::locallocaltime($env{'form.timebase'}),
+                          &Apache::lonlocal::locallocaltime($timeshifted)).
+                      '</p>');
+        } else {
+            $r->print('<p>'.
+                      &mt("Shift dates set just for your section, such that [_1] becomes [_2]",
+                          &Apache::lonlocal::locallocaltime($env{'form.timebase'}),
+                          &Apache::lonlocal::locallocaltime($timeshifted)).
+                      '</p>');
+        }
+    } else {
+        $r->print('<p>'.&mt('Shifting all dates such that [_1] becomes [_2]',
+                            &Apache::lonlocal::locallocaltime($env{'form.timebase'}),
+                            &Apache::lonlocal::locallocaltime($timeshifted)).
+                  '</p>');
+    }
     my $delta=$timeshifted-$env{'form.timebase'};
-    &dateshift($delta);
+    my $numchanges = 0;
+    my $result = &dateshift($delta,\$numchanges);
+    if ($result eq 'ok') {
+        $r->print(
+            &Apache::lonhtmlcommon::confirm_success(&mt('Completed shifting of [quant,_1,date setting]',
+                                                    $numchanges)));
+    } elsif ($result eq 'con_delayed') {
+        $r->print(
+            &Apache::lonhtmlcommon::confirm_success(&mt('Queued shifting of [quant,_1,date setting]',
+                                                        $numchanges)));
+    } else {
+        $r->print(
+            &Apache::lonhtmlcommon::confirm_success(&mt('An error occurred attempting to shift dates'),1));
+    }
     $r->print(
-        &Apache::lonhtmlcommon::confirm_success(&mt('Done')).
         '<br /><br />'.
         &Apache::lonhtmlcommon::actionbox(
             ['<a href="/adm/parmset">'.&mt('Content and Problem Settings').'</a>']));
@@ -4635,11 +5946,18 @@ sub date_shift_two {
     $r->print(&Apache::loncommon::end_page());
 }
 
+# Returns the different components of a resourcedata key.
+# Keys: scope_type, scope, realm_type, realm, realm_title,
+#       realm_exists, parameter_part, parameter_name.
+# Was used by clean_parameters (which is unused).
+#
+# @param {string} $key - the parameter key
+# @returns {hash}
 sub parse_key {
     my ($key) = @_;
     my %data;
     my ($middle,$part,$name)=
-    ($key=~/^$env{'request.course.id'}\.(?:(.+)\.)*([\w\s]+)\.(\w+)$/);
+    ($key=~/^$env{'request.course.id'}\.(?:(.+)\.)*([\w\s\-]+)\.(\w+)$/);
     $data{'scope_type'} = 'all';
     if ($middle=~/^\[(.*)\]/) {
         $data{'scope'} = $1;
@@ -4647,8 +5965,7 @@ sub parse_key {
             $data{'scope_type'} = 'user';
             $data{'scope'} = [$1,$2];
         } else {
-            #FIXME check for group scope
-            $data{'scope_type'} = 'section';
+            $data{'scope_type'} = 'secgroup';
         }
         $middle=~s/^\[(.*)\]//;
     }
@@ -4675,6 +5992,7 @@ sub parse_key {
 }
 
 
+# Calls loncommon::start_page with the "Settings" title.
 sub header {
     return &Apache::loncommon::start_page('Settings');
 }
@@ -4685,6 +6003,10 @@ sub header {
 # MAIN MENU
 ##################################################
 
+# Content and problem settings main menu.
+#
+# @param {Apache2::RequestRec} $r - the Apache request
+# @param {boolean} $parm_permission - true if the user has permission to edit the current course or section
 sub print_main_menu {
     my ($r,$parm_permission)=@_;
     #
@@ -4704,35 +6026,73 @@ ENDMAINFORMHEAD
     my $vgr  = &Apache::lonnet::allowed('vgr',$env{'request.course.id'});
     my $mgr  = &Apache::lonnet::allowed('mgr',$env{'request.course.id'});
     my $dcm = &Apache::lonnet::allowed('dcm',$env{'request.course.id'});
+    my $vcb = &Apache::lonnet::allowed('vcb',$env{'request.course.id'});
+    my $vpa = &Apache::lonnet::allowed('vpa',$env{'request.course.id'});
     if ((!$dcm) && ($env{'request.course.sec'} ne '')) {
         $dcm = &Apache::lonnet::allowed('dcm',$env{'request.course.id'}.
                                         '/'.$env{'request.course.sec'});
     }
-
+    if ((!$vcb) && ($env{'request.course.sec'} ne '')) {
+        $vcb = &Apache::lonnet::allowed('vcb',$env{'request.course.id'}.
+                                        '/'.$env{'request.course.sec'});
+    }
+    my (%linktext,%linktitle,%url);
+    if ($parm_permission->{'edit'}) {
+        %linktext = (
+                     newoverview     => 'Edit Resource Parameters - Overview Mode',
+                     settable        => 'Edit Resource Parameters - Table Mode',
+                     setoverview     => 'Modify Resource Parameters - Overview Mode',
+                    );
+        %linktitle = (
+                     newoverview     => 'Set/Modify resource parameters in overview mode.',
+                     settable        => 'Set/Modify resource parameters in table mode.',
+                     setoverview     => 'Set/Modify existing resource parameters in overview mode.',
+                     );
+    } else {
+        %linktext = (
+                     newoverview     => 'View Resource Parameters - Overview Mode',
+                     settable        => 'View Resource Parameters - Table Mode',
+                     setoverview     => 'View Resource Parameters - Overview Mode',
+                   );
+        %linktitle = (
+                     newoverview     => 'Display resource parameters in overview mode.',
+                     settable        => 'Display resource parameters in table mode.',
+                     setoverview     => 'Display existing resource parameters in overview mode.',
+                     );
+    }
+    if ($mgr) {
+        $linktext{'resettimes'} = 'Reset Student Access Times';
+        $linktitle{'resettimes'} = "Reset access times for folders/maps, resources or the $lc_crstype.";
+        $url{'resettimes'} = '/adm/helper/resettimes.helper';
+    } elsif ($vgr) {
+        $linktext{'resettimes'} = 'Display Student Access Times',
+        $linktitle{'resettimes'} = "Display access times for folders/maps, resources or the $lc_crstype.",
+        $url{'resettimes'} = '/adm/accesstimes';
+    }
     my @menu =
         ( { categorytitle=>"Content Settings for this $crstype",
         items => [
           { linktext => 'Portfolio Metadata',
             url => '/adm/parmset?action=setrestrictmeta',
-            permission => $parm_permission,
+            permission => $parm_permission->{'setrestrictmeta'},
             linktitle => "Restrict metadata for this $lc_crstype." ,
             icon =>'contact-new.png'   ,
             },
-          { linktext => 'Reset Student Access Times',
-            url => '/adm/helper/resettimes.helper',
-            permission => $mgr,
-            linktitle => "Reset access times for folders/maps, resources or the $lc_crstype."  ,
-            icon => 'start-here.png'  ,
+          { linktext => $linktext{'resettimes'},
+            url => $url{'resettimes'},
+            permission => ($vgr || $mgr),
+            linktitle => $linktitle{'resettimes'},
+            icon => 'start-here.png',
             },
           { linktext => 'Blocking Communication/Resource Access',
             url => '/adm/setblock',
-            permission => $dcm,
+            permission => ($vcb || $dcm),
             linktitle => 'Configure blocking of communication/collaboration and access to resources during an exam',
             icon => 'comblock.png',
             },
           { linktext => 'Set Parameter Setting Default Actions',
             url => '/adm/parmset?action=setdefaults',
-            permission => $parm_permission,
+            permission => $parm_permission->{'setdefaults'},
             linktitle =>'Set default actions for parameters.'  ,
             icon => 'folder-new.png'  ,
             }]},
@@ -4740,37 +6100,37 @@ ENDMAINFORMHEAD
         items => [
           { linktext => 'Edit Resource Parameters - Helper Mode',
             url => '/adm/helper/parameter.helper',
-            permission => $parm_permission,
+            permission => $parm_permission->{'helper'},
             linktitle =>'Set/Modify resource parameters in helper mode.'  ,
             icon => 'dialog-information.png'  ,
             #help => 'Parameter_Helper',
             },
-          { linktext => 'Edit Resource Parameters - Overview Mode',
+          { linktext => $linktext{'newoverview'},
             url => '/adm/parmset?action=newoverview',
-            permission => $parm_permission,
-            linktitle =>'Set/Modify resource parameters in overview mode.'  ,
-            icon => 'edit-find.png'  ,
+            permission => $parm_permission->{'newoverview'},
+            linktitle => $linktitle{'newoverview'},
+            icon => 'edit-find.png',
             #help => 'Parameter_Overview',
             },
-          { linktext => 'Edit Resource Parameters - Table Mode',
+          { linktext => $linktext{'settable'},
             url => '/adm/parmset?action=settable',
-            permission => $parm_permission,
-            linktitle =>'Set/Modify resource parameters in table mode.'  ,
-            icon => 'edit-copy.png'  ,
+            permission => $parm_permission->{'settable'},
+            linktitle => $linktitle{'settable'},
+            icon => 'edit-copy.png',
             #help => 'Table_Mode',
             }]},
            { categorytitle => 'Existing Parameter Settings for Resources',
          items => [
-          { linktext => 'Modify Resource Parameters - Overview Mode',
+          { linktext => $linktext{'setoverview'},
             url => '/adm/parmset?action=setoverview',
-            permission => $parm_permission,
-            linktitle =>'Set/Modify existing resource parameters in overview mode.'  ,
-            icon => 'preferences-desktop-wallpaper.png'  ,
+            permission => $parm_permission->{'setoverview'},
+            linktitle => $linktitle{'setoverview'},
+            icon => 'preferences-desktop-wallpaper.png',
             #help => 'Parameter_Overview',
             },
           { linktext => 'Change Log',
             url => '/adm/parmset?action=parameterchangelog',
-            permission => $parm_permission,
+            permission => $parm_permission->{'parameterchangelog'},
             linktitle =>"View parameter and $lc_crstype blog posting/user notification change log."  ,
             icon => 'document-properties.png',
             }]}
@@ -4788,6 +6148,13 @@ ENDMAINFORMHEAD
 # PORTFOLIO METADATA
 ##################################################
 
+# Prints HTML to edit an item of portfolio metadata. The HTML contains several td elements (no tr).
+# It looks like field titles are not localized.
+#
+# @param {Apache2::RequestRec} $r - the Apache request
+# @param {string} $field_name - metadata field name
+# @param {string} $field_text - metadata field title, in English unless manually added
+# @param {boolean} $added_flag - true if the field was manually added
 sub output_row {
     my ($r, $field_name, $field_text, $added_flag) = @_;
     my $output;
@@ -4845,6 +6212,9 @@ sub output_row {
 
 
 # UI to order portfolio metadata fields.
+# Currently useless because addmetafield does not work.
+#
+# @param {Apache2::RequestRec} $r - the Apache request
 sub order_meta_fields {
     my ($r)=@_;
     my $idx = 1;
@@ -4935,15 +6305,21 @@ sub order_meta_fields {
 }
 
 
+# Returns HTML with a Continue button redirecting to the initial portfolio metadata screen.
+# @returns {string}
 sub continue {
     my $output;
     $output .= '<form action="" method="post">';
     $output .= '<input type="hidden" name="action" value="setrestrictmeta" />';
-    $output .= '<input type="submit" value="Continue" />';
+    $output .= '<input type="submit" value="'.&mt('Continue').'" />';
     return ($output);
 }
 
 
+# UI to add a metadata field.
+# Currenly does not work because of an HTML error (the field is not visible).
+#
+# @param {Apache2::RequestRec} $r - the Apache request
 sub addmetafield {
     my ($r)=@_;
     &Apache::lonhtmlcommon::add_breadcrumb({href=>'/adm/parmset?action=addmetadata',
@@ -4963,7 +6339,10 @@ sub addmetafield {
             my $put_result = &Apache::lonnet::put('environment',
                                         {'metadata.'.$meta_field.'.options'=>$options},$dom,$crs);
 
-            $r->print('Undeleted Metadata Field <strong>'.$env{'course.'.$env{'request.course.id'}.'.metadata.'.$meta_field.'.added'}."</strong> with result ".$put_result.'<br />');
+            $r->print(&mt('Undeleted Metadata Field [_1] with result [_2]',
+                          '<strong>'.$env{'course.'.$env{'request.course.id'}.'.metadata.'.$meta_field.'.added'}.
+                          '</strong>',$put_result).
+                      '<br />');
         }
         $r->print(&continue());
     } elsif (exists($env{'form.fieldname'})) {
@@ -4975,30 +6354,40 @@ sub addmetafield {
                             {'metadata.'.$meta_field.'.values'=>"",
                              'metadata.'.$meta_field.'.added'=>"$display_field",
                              'metadata.'.$meta_field.'.options'=>""},$dom,$crs);
-        $r->print('Added new Metadata Field <strong>'.$env{'form.fieldname'}."</strong> with result ".$put_result.'<br />');
+        $r->print(&mt('Added new Metadata Field [_1] with result [_2]',
+                      '<strong>'.$env{'form.fieldname'}.'</strong>',$put_result).
+                  '<br />');
         $r->print(&continue());
     } else {
         my $fields = &get_deleted_meta_fieldnames($env{'request.course.id'});
         if ($fields) {
-            $r->print('You may undelete previously deleted fields.<br />Check those you wish to undelete and click Undelete.<br />');
+            $r->print(&mt('You may undelete previously deleted fields.').
+                      '<br />'.
+                      &mt('Check those you wish to undelete and click Undelete.').
+                      '<br />');
             $r->print('<form method="post" action="">');
             foreach my $key(keys(%$fields)) {
-                $r->print('<input type="checkbox" name="undeletefield" value="'.$key.'" />'.$$fields{$key}.'<br /');
+                $r->print('<label><input type="checkbox" name="undeletefield" value="'.$key.'" />'.$$fields{$key}.'</label><br /');
             }
-            $r->print('<input type="submit" name="undelete" value="Undelete" />');
+            $r->print('<input type="submit" name="undelete" value="'.&mt('Undelete').'" />');
             $r->print('</form>');
         }
-        $r->print('<hr /><strong>Or</strong> you may enter a new metadata field name.<form method="post" action="/adm/parmset?action=addmetadata"');
+        $r->print('<hr />'.
+                  &mt('[_1]Or[_2] you may enter a new metadata field name.',
+                      '<strong>','</strong>').
+                  '<form method="post" action="/adm/parmset?action=addmetadata">');
         $r->print('<input type="text" name="fieldname" /><br />');
-        $r->print('<input type="submit" value="Add Metadata Field" />');
+        $r->print('<input type="submit" value="'.&mt('Add Metadata Field').'" />');
+        $r->print('</form>');
     }
-    $r->print('</form>');
     &endSettingsScreen($r);
 }
 
 
 
 # Display or save portfolio metadata.
+#
+# @param {Apache2::RequestRec} $r - the Apache request
 sub setrestrictmeta {
     my ($r)=@_;
     my $next_meta;
@@ -5015,6 +6404,11 @@ sub setrestrictmeta {
     &startSettingsScreen($r,'parmset',$crstype);
     my $key_base = $env{'course.'.$env{'request.course.id'}.'.'};
     my $save_field = '';
+    my %lt = &Apache::lonlocal::texthash(
+                                           addm => 'Add Metadata Field',
+                                           ordm => 'Order Metadata Fields',
+                                           save => 'Save',
+                                        );
     if ($env{'form.restrictmeta'}) {
         foreach my $field (sort(keys(%env))) {
             if ($field=~m/^form.(.+)_(.+)$/) {
@@ -5053,28 +6447,25 @@ sub setrestrictmeta {
     my %metadata_fields = &Apache::lonmeta::fieldnames('portfolio');
     # Now get possible added metadata fields
     my $added_metadata_fields = &get_added_meta_fieldnames($env{'request.course.id'});
-    my $row_alt = 1;
     $output .= &Apache::loncommon::start_data_table();
     foreach my $field (sort(keys(%metadata_fields))) {
         if ($field ne 'courserestricted') {
-            $row_alt = $row_alt ? 0 : 1;
-            $output.= &output_row($r, $field, $metadata_fields{$field});
+            $output.= &output_row($r,$field,$metadata_fields{$field});
         }
     }
     my $buttons = (<<ENDButtons);
-        <input type="submit" name="restrictmeta" value="Save" />
+        <input type="submit" name="restrictmeta" value="$lt{'save'}" />
         </form><br />
         <form method="post" action="/adm/parmset?action=addmetadata" name="form1">
-        <input type="submit" name="restrictmeta" value="Add a Metadata Field" />
+        <input type="submit" name="restrictmeta" value="$lt{'addm'}" />
         </form>
         <br />
         <form method="post" action="/adm/parmset?action=ordermetadata" name="form2">
-        <input type="submit" name="restrictmeta" value="Order Metadata Fields" />
+        <input type="submit" name="restrictmeta" value="$lt{'ordm'}" />
 ENDButtons
     my $added_flag = 1;
     foreach my $field (sort(keys(%$added_metadata_fields))) {
-        $row_alt = $row_alt ? 0 : 1;
-        $output.= &output_row($r, $field, $$added_metadata_fields{$field},$added_flag, $row_alt);
+        $output.= &output_row($r,$field,$$added_metadata_fields{$field},$added_flag);
     }
     $output .= &Apache::loncommon::end_data_table();
     $r->print(<<ENDenv);
@@ -5089,6 +6480,10 @@ ENDenv
 }
 
 
+# Returns metadata fields that have been manually added.
+#
+# @param {string} $cid - course id
+# @returns {hash reference} - hash field name -> field title (not localized)
 sub get_added_meta_fieldnames {
     my ($cid) = @_;
     my %fields;
@@ -5103,6 +6498,10 @@ sub get_added_meta_fieldnames {
 }
 
 
+# Returns metadata fields that have been manually added and deleted.
+#
+# @param {string} $cid - course id
+# @returns {hash reference} - hash field name -> field title (not localized)
 sub get_deleted_meta_fieldnames {
     my ($cid) = @_;
     my %fields;
@@ -5124,6 +6523,8 @@ sub get_deleted_meta_fieldnames {
 ##################################################
 
 # UI to change parameter setting default actions
+#
+# @param {Apache2::RequestRec} $r - the Apache request
 sub defaultsetter {
     my ($r) = @_;
 
@@ -5217,8 +6618,8 @@ sub defaultsetter {
             push @datedisplay,&mt('Automatically set earlier than ').$tempkey;
         }
     }
-$r->print(&mt('Manual setting rules apply to all interfaces.').'<br />'.
-      &mt('Automatic setting rules apply to table mode interfaces only.'));
+    $r->print(&mt('Manual setting rules apply to all interfaces.').'<br />'.
+        &mt('Automatic setting rules apply to table mode interfaces only.'));
     $r->print("\n".&Apache::loncommon::start_data_table().
           &Apache::loncommon::start_data_table_header_row().
           "<th>".&mt('Rule for parameter').'</th><th>'.
@@ -5262,7 +6663,7 @@ $r->print(&mt('Manual setting rules appl
     <input name="$tempkey\_hours" type="text" size="4" value="$hours" />$lt{'hours'}<br />
     <input name="$tempkey\_min" type="text" size="4" value="$min" />$lt{'min'}<br />
     <input name="$tempkey\_sec" type="text" size="4" value="$sec" />$lt{'sec'}
-    ENDINPUTDATE
+ENDINPUTDATE
         } elsif ($defkeytype{$tempkey} eq 'string_yesno') {
                 my $yeschecked='';
                 my $nochecked='';
@@ -5272,7 +6673,7 @@ $r->print(&mt('Manual setting rules appl
             $r->print(<<ENDYESNO);
     <label><input type="radio" name="$tempkey\_value" value="yes"$yeschecked /> $lt{'yes'}</label><br />
     <label><input type="radio" name="$tempkey\_value" value="no"$nochecked /> $lt{'no'}</label>
-    ENDYESNO
+ENDYESNO
         } else {
             $r->print('<input type="text" size="20" name="'.$tempkey.'_value" value="'.&rulescache($tempkey.'_value').'" />');
         }
@@ -5290,15 +6691,33 @@ $r->print(&mt('Manual setting rules appl
 # PARAMETER CHANGES LOG
 ##################################################
 
+# Returns some info for a parameter log entry.
+# Returned entries:
+# $realm - HTML title for the parameter level and resource
+# $section - parameter section
+# $name - parameter name
+# $part - parameter part
+# $what - $part.'.'.$name
+# $middle - resource symb ?
+# $uname - user name (same as given)
+# $udom - user domain (same as given)
+# $issection - section or group name
+# $realmdescription - title for the parameter level and resource (without using HTML)
+#
+# @param {string} $key - parameter log key
+# @param {string} $uname - user name
+# @param {string} $udom - user domain
+# @param {boolean} $typeflag - .type log entry
+# @returns {Array}
 sub components {
-    my ($key,$uname,$udom,$exeuser,$exedomain,$typeflag)=@_;
+    my ($key,$uname,$udom,$typeflag)=@_;
 
     if ($typeflag) {
         $key=~s/\.type$//;
     }
 
     my ($middle,$part,$name)=
-        ($key=~/^$env{'request.course.id'}\.(?:(.+)\.)*([\w\s]+)\.(\w+)$/);
+        ($key=~/^$env{'request.course.id'}\.(?:(.+)\.)*([\w\s\-]+)\.(\w+)$/);
     my $issection;
 
     my $section=&mt('All Students');
@@ -5338,11 +6757,12 @@ sub components {
         $what,$middle,$uname,$udom,$issection,$realmdescription);
 }
 
-my %standard_parms;
-my %standard_parms_types;
+my %standard_parms; # hash parameter name -> parameter title (not localized)
+my %standard_parms_types; # hash parameter name -> parameter type
 
+# Reads parameter info from packages.tab into %standard_parms.
 sub load_parameter_names {
-    open(my $config,"<$Apache::lonnet::perlvar{'lonTabDir'}/packages.tab");
+    open(my $config,"<","$Apache::lonnet::perlvar{'lonTabDir'}/packages.tab");
     while (my $configline=<$config>) {
         if ($configline !~ /\S/ || $configline=~/^\#/) { next; }
         chomp($configline);
@@ -5357,8 +6777,13 @@ sub load_parameter_names {
     close($config);
     $standard_parms{'int_pos'}      = 'Positive Integer';
     $standard_parms{'int_zero_pos'} = 'Positive Integer or Zero';
+    $standard_parms{'scoreformat'}  = 'Format for display of score';
 }
 
+# Returns a parameter title for standard parameters, the name for others.
+#
+# @param {string} $name - parameter name
+# @returns {string}
 sub standard_parameter_names {
     my ($name)=@_;
     if (!%standard_parms) {
@@ -5371,6 +6796,10 @@ sub standard_parameter_names {
     }
 }
 
+# Returns a parameter type for standard parameters, undef for others.
+#
+# @param {string} $name - parameter name
+# @returns {string}
 sub standard_parameter_types {
     my ($name)=@_;
     if (!%standard_parms_types) {
@@ -5382,6 +6811,10 @@ sub standard_parameter_types {
     return;
 }
 
+# Returns a parameter level title (not localized) from the parameter level name.
+#
+# @param {string} $name - parameter level name (recognized: resourcelevel|maplevel|maplevelrecurse|courselevel)
+# @returns {string}
 sub standard_parameter_levels {
     my ($name)=@_;
     my %levels = (
@@ -5397,11 +6830,13 @@ sub standard_parameter_levels {
 }
 
 # Display log for parameter changes, blog postings, user notification changes.
+#
+# @param {Apache2::RequestRec} $r - the Apache request
 sub parm_change_log {
-    my ($r)=@_;
+    my ($r,$parm_permission)=@_;
     my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
     my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
-    my $crstype = $env{'course.'.$env{'request.course.id'}.'.type'}
+    my $crstype = $env{'course.'.$env{'request.course.id'}.'.type'};
     &Apache::lonhtmlcommon::add_breadcrumb({href=>'/adm/parmset?action=settable',
     text=>"Parameter Change Log"});
     my $js = '<script type="text/javascript">'."\n".
@@ -5430,11 +6865,18 @@ sub parm_change_log {
               '<input type="submit" value="'.&mt('Display').'" />'.
               '</form></fieldset></div><br clear="all" />');
 
+    my $readonly = 1;
+    if ($parm_permission->{'edit'}) {
+        undef($readonly);
+    }
     my $courseopt=&Apache::lonnet::get_courseresdata($cnum,$cdom);
     $r->print(&Apache::loncommon::start_data_table().&Apache::loncommon::start_data_table_header_row().
           '<th>'.&mt('Time').'</th><th>'.&mt('User').'</th><th>'.&mt('Extent').'</th><th>'.&mt('Users').'</th><th>'.
-          &mt('Parameter').'</th><th>'.&mt('Part').'</th><th>'.&mt('New Value').'</th><th>'.&mt('Announce').'</th>'.
-          &Apache::loncommon::end_data_table_header_row());
+          &mt('Parameter').'</th><th>'.&mt('Part').'</th><th>'.&mt('New Value').'</th>');
+    unless ($readonly) {
+        $r->print('<th>'.&mt('Announce').'</th>');
+    }
+    $r->print(&Apache::loncommon::end_data_table_header_row());
     my $shown=0;
     my $folder='';
     if ($env{'form.displayfilter'} eq 'currentfolder') {
@@ -5446,6 +6888,12 @@ sub parm_change_log {
         }
         if ($last) { ($folder) = &Apache::lonnet::decode_symb($last); }
     }
+    my $numgroups = 0;
+    my @groups;
+    if ($env{'request.course.groups'} ne '') {
+        @groups = split(/:/,$env{'request.course.groups'});
+        $numgroups = scalar(@groups);
+    }
     foreach my $id (sort {
                 if ($parmlog{$b}{'exe_time'} ne $parmlog{$a}{'exe_time'}) {
                     return $parmlog{$b}{'exe_time'} <=>$parmlog{$a}{'exe_time'}
@@ -5466,7 +6914,8 @@ sub parm_change_log {
                             $parmlog{$id}{'exe_uname'},
                             $parmlog{$id}{'exe_udom'});
         my $send_msg_link='';
-        if ((($parmlog{$id}{'exe_uname'} ne $env{'user.name'})
+        if ((!$readonly) && 
+            (($parmlog{$id}{'exe_uname'} ne $env{'user.name'})
             || ($parmlog{$id}{'exe_udom'} ne $env{'user.domain'}))) {
             $send_msg_link ='<br />'.
             &Apache::loncommon::messagewrapper(&mt('Send message'),
@@ -5482,9 +6931,10 @@ sub parm_change_log {
             my $typeflag = ($changed =~/\.type$/ &&
                     !exists($parmlog{$id}{'logentry'}{$changed.'.type'}));
             my ($realm,$section,$parmname,$part,$what,$middle,$uname,$udom,$issection,$realmdescription)=
-                &components($changed,$parmlog{$id}{'uname'},$parmlog{$id}{'udom'},undef,undef,$typeflag);
+                &components($changed,$parmlog{$id}{'uname'},$parmlog{$id}{'udom'},$typeflag);
             if ($env{'request.course.sec'} ne '') {
-                next if (($issection ne '') && ($issection ne $env{'request.course.sec'}));
+                next if (($issection ne '') && (!(($issection eq $env{'request.course.sec'}) ||
+                                                  ($numgroups && (grep(/^\Q$issection\E$/,@groups))))));
                 if ($uname ne '') {
                     my $stusection = &Apache::lonnet::getsection($uname,$udom,$env{'request.course.id'});
                     next if (($stusection ne '-1') && ($stusection ne $env{'request.course.sec'})); 
@@ -5518,8 +6968,12 @@ sub parm_change_log {
                     $parmitem = &mt($parmitem);
                     $output .= &mt('Type: [_1]',$parmitem);
                 } else {
+                    my $toolsymb;
+                    if ($middle =~ /ext\.tool$/) {
+                        $toolsymb = $middle;
+                    }
                     my ($level,@all)=&parmval_by_symb($what,$middle,
-                        &Apache::lonnet::metadata($middle,$what),
+                        &Apache::lonnet::metadata($middle,$what,$toolsymb),
                         $uname,$udom,$issection,$issection,$courseopt);
                     my $showvalue = $value;
                     if ($istype{$parmname} eq '') {
@@ -5543,27 +6997,31 @@ sub parm_change_log {
                     }
                 }
             }
-            $output .= '</td><td>';
-                
-            if ($stillactive) {
-                my $parmitem = &standard_parameter_names($parmname);
-                $parmitem = &mt($parmitem);
-                my $title=&mt('Changed [_1]',$parmitem);
-                my $description=&mt('Changed [_1] for [_2] to [_3]',
-                    $parmitem,$realmdescription,
-                    (&isdateparm($istype{$parmname})?&Apache::lonlocal::locallocaltime($value):$value));
-                if (($uname) && ($udom)) {
-                    $output .=
-                    &Apache::loncommon::messagewrapper('Notify User',
-                                    $uname,$udom,$title,
-                                    $description);
-                } else {
-                    $output .=
-                    &Apache::lonrss::course_blog_link($id,$title,
-                                    $description);
+            $output .= '</td>';
+
+            unless ($readonly) { 
+                $output .= '<td>';
+                if ($stillactive) {
+                    my $parmitem = &standard_parameter_names($parmname);
+                    $parmitem = &mt($parmitem);
+                    my $title=&mt('Changed [_1]',$parmitem);
+                    my $description=&mt('Changed [_1] for [_2] to [_3]',
+                        $parmitem,$realmdescription,
+                        (&isdateparm($istype{$parmname})?&Apache::lonlocal::locallocaltime($value):$value));
+                    if (($uname) && ($udom)) {
+                        $output .=
+                        &Apache::loncommon::messagewrapper('Notify User',
+                                                           $uname,$udom,$title,
+                                                           $description);
+                    } else {
+                        $output .=
+                            &Apache::lonrss::course_blog_link($id,$title,
+                                                              $description);
+                    }
                 }
+                $output .= '</td>';
             }
-            $output .= '</td>'.&Apache::loncommon::end_data_table_row();
+            $output .= &Apache::loncommon::end_data_table_row();
         }
         if ($env{'form.displayfilter'} eq 'containing') {
             my $wholeentry=$about_me_link.':'.
@@ -5591,7 +7049,17 @@ sub parm_change_log {
 # MISC !
 ##################################################
 
+# Stores slot information.
 # Used by table UI
+# FIXME: I don't understand how this can work when the symb is not defined (if only a map was selected)
+#
+# @param {string} $slot_name - slot name
+# @param {string} $cdom - course domain
+# @param {string} $cnum - course number
+# @param {string} $symb - resource symb
+# @param {string} $uname - user name
+# @param {string} $udom - user domain
+# @returns {string} - 'ok' or error name
 sub update_slots {
     my ($slot_name,$cdom,$cnum,$symb,$uname,$udom) = @_;
     my %slot=&Apache::lonnet::get_slot($slot_name);
@@ -5645,7 +7113,17 @@ sub update_slots {
     return $success;
 }
 
+# Deletes a slot reservation.
 # Used by table UI
+# FIXME: I don't understand how this can work when the symb is not defined (if only a map was selected)
+#
+# @param {string} $slot_name - slot name
+# @param {string} $cdom - course domain
+# @param {string} $cnum - course number
+# @param {string} $uname - user name
+# @param {string} $udom - user domain
+# @param {string} $symb - resource symb
+# @returns {string} - 'ok' or error name
 sub delete_slots {
     my ($slot_name,$cdom,$cnum,$uname,$udom,$symb) = @_;
     my $delresult;
@@ -5681,13 +7159,19 @@ sub delete_slots {
     return $delresult;
 }
 
+# Returns true if there is a current course.
 # Used by handler
+#
+# @returns {boolean}
 sub check_for_course_info {
     my $navmap = Apache::lonnavmaps::navmap->new();
     return 1 if ($navmap);
     return 0;
 }
 
+# Returns the current course host and host LON-CAPA version.
+#
+# @returns {Array} - (course hostname, major version number, minor version number)
 sub parameter_release_vars { 
    my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
    my $chome = $env{'course.'.$env{'request.course.id'}.'.home'};
@@ -5697,6 +7181,17 @@ sub parameter_release_vars {
    return ($chostname,$cmajor,$cminor);
 }
 
+# Checks if the course host version can handle a parameter required version,
+# and if it does, stores the release needed for the course.
+#
+# @param {string} $name - parameter name
+# @param {string} $value - parameter value
+# @param {string} $valmatch - name of the test used for checking the value
+# @param {string} $namematch - name of the test used for checking the name
+# @param {string} $needsrelease - version needed by the parameter, major.minor
+# @param {integer} $cmajor - course major version number
+# @param {integer} $cminor - course minor version number
+# @returns {boolean} - true if a newer version is needed
 sub parameter_releasecheck {
     my ($name,$value,$valmatch,$namematch,$needsrelease,$cmajor,$cminor) = @_;
     my $needsnewer;
@@ -5716,6 +7211,46 @@ sub parameter_releasecheck {
     return $needsnewer;
 }
 
+sub get_permission {
+    my %permission;
+    my $allowed = 0;
+    return (\%permission,$allowed) unless ($env{'request.course.id'});
+    if ((&Apache::lonnet::allowed('opa',$env{'request.course.id'})) ||
+        (&Apache::lonnet::allowed('opa',$env{'request.course.id'}.'/'.
+                  $env{'request.course.sec'}))) {
+        %permission= (
+                       'edit'               => 1,
+                       'set'                => 1,
+                       'setoverview'        => 1,
+                       'addmetadata'        => 1,
+                       'ordermetadata'      => 1,
+                       'setrestrictmeta'    => 1,
+                       'newoverview'        => 1,
+                       'setdefaults'        => 1,
+                       'settable'           => 1,
+                       'parameterchangelog' => 1,
+                       'cleanparameters'    => 1,
+                       'dateshift1'         => 1,
+                       'dateshift2'         => 1,
+                       'helper'             => 1,
+         );
+    } elsif ((&Apache::lonnet::allowed('vpa',$env{'request.course.id'})) ||
+             (&Apache::lonnet::allowed('vpa',$env{'request.course.id'}.'/'.
+                  $env{'request.course.sec'}))) {
+        %permission = (
+                       'set'                => 1,
+                       'settable'           => 1,
+                       'newoverview'        => 1,
+                       'setoverview'        => 1,
+                       'parameterchangelog' => 1,
+                      );
+    }
+    foreach my $perm (values(%permission)) {
+        if ($perm) { $allowed=1; last; }
+    }
+    return (\%permission,$allowed);
+}
+
 ##################################################
 # HANDLER
 ##################################################
@@ -5764,25 +7299,25 @@ sub handler {
                                             'Parameter_Manager,Course_Environment,Parameter_Helper,Parameter_Overview,Table_Mode'});
 
 # ----------------------------------------------------- Needs to be in a course
-    my $parm_permission =
-    (&Apache::lonnet::allowed('opa',$env{'request.course.id'}) ||
-     &Apache::lonnet::allowed('opa',$env{'request.course.id'}.'/'.
-                  $env{'request.course.sec'}));
+    my ($parm_permission,$allowed) = &get_permission();
     my $exists = &check_for_course_info();
 
-    if ($env{'request.course.id'} &&  $parm_permission && $exists) {
+    if ($env{'request.course.id'} && $allowed && $exists) {
         #
         # Main switch on form.action and form.state, as appropriate
         #
         # Check first if coming from someone else headed directly for
         #  the table mode
-        if ((($env{'form.command'} eq 'set') && ($env{'form.url'})
-                && (!$env{'form.dis'})) || ($env{'form.symb'})) {
-            &assessparms($r);
+        if (($parm_permission->{'set'}) && 
+            ((($env{'form.command'} eq 'set') && ($env{'form.url'})
+                && (!$env{'form.dis'})) || ($env{'form.symb'}))) {
+            &assessparms($r,$parm_permission);
         } elsif (! exists($env{'form.action'})) {
             &print_main_menu($r,$parm_permission);
+        } elsif (!$parm_permission->{$env{'form.action'}}) {
+            &print_main_menu($r,$parm_permission);
         } elsif ($env{'form.action'} eq 'setoverview') {
-            &overview($r);
+            &overview($r,$parm_permission);
         } elsif ($env{'form.action'} eq 'addmetadata') {
             &addmetafield($r);
         } elsif ($env{'form.action'} eq 'ordermetadata') {
@@ -5790,13 +7325,13 @@ sub handler {
         } elsif ($env{'form.action'} eq 'setrestrictmeta') {
             &setrestrictmeta($r);
         } elsif ($env{'form.action'} eq 'newoverview') {
-            &newoverview($r);
+            &newoverview($r,$parm_permission);
         } elsif ($env{'form.action'} eq 'setdefaults') {
             &defaultsetter($r);
         } elsif ($env{'form.action'} eq 'settable') {
-            &assessparms($r);
+            &assessparms($r,$parm_permission);
         } elsif ($env{'form.action'} eq 'parameterchangelog') {
-            &parm_change_log($r);
+            &parm_change_log($r,$parm_permission);
         } elsif ($env{'form.action'} eq 'cleanparameters') {
             &clean_parameters($r);
         } elsif ($env{'form.action'} eq 'dateshift1') {