--- loncom/homework/grades.pm	2003/11/10 16:39:41	1.156
+++ loncom/homework/grades.pm	2004/11/06 01:22:11	1.204.2.8
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # The LON-CAPA Grading handler
 #
-# $Id: grades.pm,v 1.156 2003/11/10 16:39:41 albertel Exp $
+# $Id: grades.pm,v 1.204.2.8 2004/11/06 01:22:11 albertel Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -48,6 +48,7 @@ use Apache::lonhomework;
 use Apache::loncoursedata;
 use Apache::lonmsg qw(:user_normal_msg);
 use Apache::Constants qw(:common);
+use Apache::lonlocal;
 use String::Similarity;
 
 my %oldessays=();
@@ -88,10 +89,15 @@ sub getpartlist {
 
 # --- Get the symbolic name of a problem and the url
 sub get_symb_and_url {
-    my ($request) = @_;
+    my ($request,$silent) = @_;
     (my $url=$ENV{'form.url'}) =~ s-^http://($ENV{'SERVER_NAME'}|$ENV{'HTTP_HOST'})--;
     my $symb=($ENV{'form.symb'} ne '' ? $ENV{'form.symb'} : (&Apache::lonnet::symbread($url)));
-    if ($symb eq '') { $request->print("Unable to handle ambiguous references:$url:."); return ''; }
+    if ($symb eq '') { 
+	if (!$silent) {
+	    $request->print("Unable to handle ambiguous references:$url:.");
+	    return ();
+	}
+    }
     return ($symb,$url);
 }
 
@@ -161,6 +167,21 @@ sub response_type {
     return \@partlist,\%handgrade,\%responseType;
 }
 
+sub get_display_part {
+    my ($partID,$url,$symb)=@_;
+    if (!defined($symb) || $symb eq '') {
+	$symb=$ENV{'form.symb'};
+	if ($symb eq '') { $symb=&Apache::lonnet::symbread($url) }
+    }
+    my $display=&Apache::lonnet::EXT('resource.'.$partID.'.display',$symb);
+    &Apache::lonnet::logthis("\nsymb $symb\n url  $url\npartID $partID\ndisplay $display \n");
+    if (defined($display) and $display ne '') {
+	$display.= " (<font color=\"#999900\">id $partID</font>)";
+    } else {
+	$display=$partID;
+    }
+    return $display;
+}
 #--- Show resource title
 #--- and parts and response type
 sub showResourceInfo {
@@ -168,7 +189,7 @@ sub showResourceInfo {
     my $col=3;
     if ($checkboxes) { $col=4; }
     my $result ='<table border="0">'.
-	'<tr><td colspan="'.$col.'"><font size="+1"><b>Current Resource: </b>'.
+	'<tr><td colspan="'.$col.'"><font size="+1"><b>'.&mt('Current Resource').': </b>'.
 	$probTitle.'</font></td></tr>'."\n";
     my ($partlist,$handgrade,$responseType) = &response_type($url);
     my %resptype = ();
@@ -188,7 +209,8 @@ sub showResourceInfo {
 	    }
 	    $partsseen{$partID}=1;
 	}
-	$result.='<td><b>Part </b>'.$partID.' <font color="#999999">'.
+	my $display_part=&get_display_part($partID,$url);
+	$result.='<td><b>Part: </b>'.$display_part.' <font color="#999999">'.
 	    $resID.'</font></td>'.
 	    '<td><b>Type: </b>'.$responsetype.'</td></tr>';
 #	    '<td><b>Handgrade: </b>'.$handgrade.'</td></tr>';
@@ -290,7 +312,8 @@ sub cleanRecord {
 	    $ENV{'form.kwstyle'}  = $keyhash{$loginuser.'_kwstyle'} ne '' ? $keyhash{$loginuser.'_kwstyle'} : '';
 	    $ENV{'form.'.$symb} = 1; # so that we don't have to read it from disk for multiple sub of the same prob.
 	}
-	return '<br /><br /><blockquote><pre>'.&keywords_highlight($answer).'</pre></blockquote>';
+	$answer =~ s-\n-<br />-g;
+	return '<br /><br /><blockquote><tt>'.&keywords_highlight($answer).'</tt></blockquote>';
     }
     return $answer;
 }
@@ -504,7 +527,7 @@ sub verifyreceipt {
     my $request  = shift;
 
     my $courseid = $ENV{'request.course.id'};
-    my $receipt  = unpack("%32C*",$Apache::lonnet::perlvar{'lonHostID'}).'-'.
+    my $receipt  = &Apache::lonnet::recprefix($courseid).'-'.
 	$ENV{'form.receipt'};
     $receipt     =~ s/[^\-\d]//g;
     my $url      = $ENV{'form.url'};
@@ -519,18 +542,27 @@ sub verifyreceipt {
 
     my ($string,$contents,$matches) = ('','',0);
     my (undef,undef,$fullname) = &getclasslist('all','0');
-
+    
+    my $receiptparts=0;
+    if ($ENV{"course.$courseid.receiptalg"} eq 'receipt2') { $receiptparts=1; }
+    my $parts=['0'];
+    if ($receiptparts) { ($parts)=&response_type($url,$symb); }
     foreach (sort {lc($$fullname{$a}) cmp lc($$fullname{$b}) } keys %$fullname) {
 	my ($uname,$udom)=split(/\:/);
-	if ($receipt eq 
-	    &Apache::lonnet::ireceipt($uname,$udom,$courseid,$symb)) {
-	    $contents.='<tr bgcolor="#ffffe6"><td>&nbsp;'."\n".
-		'<a href="javascript:viewOneStudent(\''.$uname.'\',\''.$udom.
-		'\')"; TARGET=_self>'.$$fullname{$_}.'</a>&nbsp;</td>'."\n".
-		'<td>&nbsp;'.$uname.'&nbsp;</td>'.
-		'<td>&nbsp;'.$udom.'&nbsp;</td></tr>'."\n";
-	    
-	    $matches++;
+	foreach my $part (@$parts) {
+	    if ($receipt eq &Apache::lonnet::ireceipt($uname,$udom,$courseid,$symb,$part)) {
+		$contents.='<tr bgcolor="#ffffe6"><td>&nbsp;'."\n".
+		    '<a href="javascript:viewOneStudent(\''.$uname.'\',\''.$udom.
+		    '\')"; TARGET=_self>'.$$fullname{$_}.'</a>&nbsp;</td>'."\n".
+		    '<td>&nbsp;'.$uname.'&nbsp;</td>'.
+		    '<td>&nbsp;'.$udom.'&nbsp;</td>';
+		if ($receiptparts) {
+		    $contents.='<td>&nbsp;'.$part.'&nbsp;</td>';
+		}
+		$contents.='</tr>'."\n";
+		
+		$matches++;
+	    }
 	}
     }
     if ($matches == 0) {
@@ -543,8 +575,11 @@ sub verifyreceipt {
 	    '<table border="0"><tr bgcolor="#e6ffff">'."\n".
 	    '<td><b>&nbsp;Fullname&nbsp;</b></td>'."\n".
 	    '<td><b>&nbsp;Username&nbsp;</b></td>'."\n".
-	    '<td><b>&nbsp;Domain&nbsp;</b></td></tr>'."\n".
-	    $contents.
+	    '<td><b>&nbsp;Domain&nbsp;</b></td>';
+	if ($receiptparts) {
+	    $string.='<td>&nbsp;Problem Part&nbsp;</td>';
+	}
+	$string.='</tr>'."\n".$contents.
 	    '</table></td></tr></table>'."\n";
     }
     return $string.&show_grading_menu_form($symb,$url);
@@ -663,7 +698,9 @@ LISTJAVASCRIPT
 	    '<td>'.&nameUserString('header').'</td>';
 	if ($ENV{'form.showgrading'} eq 'yes' && $submitonly ne 'all') {
 	    foreach (sort(@$partlist)) {
-		$gradeTable.='<td><b>&nbsp;Part '.(split(/_/))[0].' Status&nbsp;</b></td>';
+		my $display_part=&get_display_part((split(/_/))[0],$url,$symb);
+		$gradeTable.='<td><b>&nbsp;Part: '.$display_part.
+		    ' Status&nbsp;</b></td>';
 	    }
 	}
 	$loop++;
@@ -678,10 +715,11 @@ LISTJAVASCRIPT
 	if ($ENV{'form.showgrading'} eq 'yes' && $submitonly ne 'all') {
 	    (%status) =&student_gradeStatus($url,$symb,$udom,$uname,$partlist);
 	    my $submitted = 0;
-	    my $graded = 1;
+	    my $graded = 0;
 	    foreach (keys(%status)) {
 		$submitted = 1 if ($status{$_} ne 'nothing');
-		$graded = 0 if ($status{$_} =~ /^correct/);
+		$graded = 1 if ($status{$_} !~ /^correct/);
+
 		my ($foo,$partid,$foo1) = split(/\./,$_);
 		if ($status{'resource.'.$partid.'.submitted_by'} ne '') {
 		    $submitted = 0;
@@ -735,9 +773,12 @@ LISTJAVASCRIPT
 	if ($num_students eq 0) {
 	    $gradeTable='<br />&nbsp;<font color="red">There are no students currently enrolled.</font>';
 	} else {
+	    my $submissions='submissions';
+	    if ($submitonly eq 'incorrect') { $submissions = 'incorrect submissions'; }
+	    if ($submitonly eq 'graded'   ) { $submissions = 'ungraded submissions'; }
 	    $gradeTable='<br />&nbsp;<font color="red">'.
-		'No submissions found for this resource for any students. ('.$num_students.
-		' checked for submissions)</font><br />';
+		'No '.$submissions.' found for this resource for any students. ('.$num_students.
+		' students checked for '.$submissions.')</font><br />';
 	}
     } elsif ($ctr == 1) {
 	$gradeTable =~ s/type=checkbox/type=checkbox checked/;
@@ -1061,7 +1102,7 @@ sub sub_page_kw_js {
     var ypos = (screen.height-height)/2-30;
     ypos = (ypos < 0) ? '0' : ypos;
 
-    pWin = window.open('', 'MessageCenter', 'toolbar=no,location=no,scrollbars='+scrollbar+',screenx='+xpos+',screeny='+ypos+',width=600,height='+height);
+    pWin = window.open('', 'MessageCenter', 'resizable=yes,toolbar=no,location=no,scrollbars='+scrollbar+',screenx='+xpos+',screeny='+ypos+',width=600,height='+height);
     pWin.focus();
     pDoc = pWin.document;
     pDoc.open('text/html','replace');
@@ -1192,7 +1233,7 @@ sub sub_page_kw_js {
     var ypos = (screen.height-330)/2-30;
     ypos = (ypos < 0) ? '0' : ypos;
 
-    hwdWin = window.open('', 'KeywordHighlightCentral', 'toolbar=no,location=no,scrollbars=no,width=400,height=300,screenx='+xpos+',screeny='+ypos);
+    hwdWin = window.open('', 'KeywordHighlightCentral', 'resizeable=yes,toolbar=no,location=no,scrollbars=no,width=400,height=300,screenx='+xpos+',screeny='+ypos);
     hwdWin.focus();
     var hDoc = hwdWin.document;
     hDoc.open('text/html','replace');
@@ -1266,16 +1307,17 @@ sub gradeBox {
 		  '' : $$record{'resource.'.$partid.'.awarded'}*$wgt);
     my $result='<input type="hidden" name="WGT'.$counter.'_'.$partid.'" value="'.$wgt.'" />'."\n";
 
+    my $display_part=&get_display_part($partid,undef,$symb);
     $result.='<table border="0"><tr><td>'.
-	'<b>Part </b>'.$partid.' <b>Points: </b></td><td>'."\n";
+	'<b>Part: </b>'.$display_part.' <b>Points: </b></td><td>'."\n";
 
     my $ctr = 0;
     $result.='<table border="0"><tr>'."\n";  # display radio buttons in a nice table 10 across
     while ($ctr<=$wgt) {
-	$result.= '<td><input type="radio" name="RADVAL'.$counter.'_'.$partid.'" '.
+	$result.= '<td><nobr><input type="radio" name="RADVAL'.$counter.'_'.$partid.'" '.
 	    'onclick="javascript:writeBox(this.form,\''.$counter.'_'.$partid.'\','.
 	    $ctr.')" value="'.$ctr.'" '.
-	    ($score eq $ctr ? 'checked':'').' /> '.$ctr."</td>\n";
+	    ($score eq $ctr ? 'checked':'').' /> '.$ctr."</nobr></td>\n";
 	$result.=(($ctr+1)%10 == 0 ? '</tr><tr>' : '');
 	$ctr++;
     }
@@ -1375,7 +1417,9 @@ sub submission {
 	return;
     }
 
-    $ENV{'form.lastSub'} = ($ENV{'form.lastSub'} eq '' ? 'datesub' : $ENV{'form.lastSub'});
+    if (!$ENV{'form.lastSub'}) { $ENV{'form.lastSub'} = 'datesub'; }
+    if (!$ENV{'form.vProb'}) { $ENV{'form.vProb'} = 'yes'; }
+    if (!$ENV{'form.vAns'}) { $ENV{'form.vAns'} = 'yes'; }
     my $last = ($ENV{'form.lastSub'} eq 'last' ? 'last' : '');
     my $checkIcon = '<img src="'.$request->dir_config('lonIconsURL').
 	'/check.gif" height="16" border="0" />';
@@ -1597,11 +1641,12 @@ KEYWORDS
 	    my %seenparts;
 	    for my $part (sort keys(%$handgrade)) {
 		my ($partid,$respid) = split(/_/,$part);
+		my $display_part=&get_display_part($partid,$url,$symb);
 		if ($ENV{"form.$uname:$udom:$partid:submitted_by"}) {
 		    if (exists($seenparts{$partid})) { next; }
 		    $seenparts{$partid}=1;
-		    my $submitby='<b>Part '.$partid.
-			' Collaborative submission by: </b>'.
+		    my $submitby='<b>Part:</b> '.$display_part.
+			' <b>Collaborative submission by:</b> '.
 			'<a href="javascript:viewSubmitter(\''.
 			$ENV{"form.$uname:$udom:$partid:submitted_by"}.
 			'\')"; TARGET=_self>'.
@@ -1611,8 +1656,8 @@ KEYWORDS
 		}
 		my $responsetype = $responseType->{$partid}->{$respid};
 		if (!exists($record{"resource.$partid.$respid.submission"})) {
-		    $lastsubonly.='<tr><td bgcolor="#ffffe6"><b>Part '.
-			$partid.'</b> <font color="#999999">( ID '.$respid.
+		    $lastsubonly.='<tr><td bgcolor="#ffffe6"><b>Part:</b> '.
+			$display_part.' <font color="#999999">( ID '.$respid.
 			' )</font>&nbsp; &nbsp;'.
 			'<font color="red">Nothing submitted - no attempts</font><br /><br />';
 		    next;
@@ -1640,11 +1685,14 @@ KEYWORDS
 		    if ($ENV{'form.lastSub'} eq 'lastonly' || 
 			($ENV{'form.lastSub'} eq 'hdgrade' && 
 			 $$handgrade{$part} eq 'yes')) {
-			$lastsubonly.='<tr><td bgcolor="#ffffe6"><b>Part '.
-			    $partid.'</b> <font color="#999999">( ID '.$respid.
+			my $display_part=&get_display_part($partid,$url,$symb);
+			$lastsubonly.='<tr><td bgcolor="#ffffe6"><b>Part:</b> '.
+			    $display_part.' <font color="#999999">( ID '.$respid.
 			    ' )</font>&nbsp; &nbsp;';
 			if ($record{"resource.$partid.$respid.uploadedurl"}) {
-			    $lastsubonly.='<a href="'.&Apache::lonnet::tokenwrapper($record{"resource.$partid.$respid.uploadedurl"}).'"><img src="/adm/lonIcons/unknown.gif" border=0"> File uploaded by student</a> <font color="red" size="1">Like all files provided by users, this file may contain virusses</font><br />';
+			    &Apache::lonnet::allowuploaded('/adm/grades',
+			      $record{"resource.$partid.$respid.uploadedurl"});
+			    $lastsubonly.='<a href="'.$record{"resource.$partid.$respid.uploadedurl"}.'" target="lonGRDs"><img src="/adm/lonIcons/unknown.gif" border=0"> File uploaded by student</a> <font color="red" size="1">Like all files provided by users, this file may contain virusses</font><br />';
 			}
 			$lastsubonly.='<b>Submitted Answer: </b>'.
 			    &cleanRecord($subval,$responsetype,$symb,$partid,
@@ -1674,12 +1722,15 @@ KEYWORDS
 	my $toGrade.='<input type="button" value="Grade Student" '.
 	    'onClick="javascript:checksubmit(this.form,\'Grade Student\',\''
 	    .$counter.'\');" TARGET=_self> &nbsp;'."\n" if (&canmodify($usec));
-	$toGrade.='</td></tr></table></td></tr></table></form>'."\n";
-	$toGrade.=&show_grading_menu_form($symb,$url) 
-	    if (($ENV{'form.command'} eq 'submission') || 
-		($ENV{'form.command'} eq 'processGroup' && $counter == $total));
-	$request = print($toGrade);
+	$toGrade.='</td></tr></table></td></tr></table>'."\n";
+	if (($ENV{'form.command'} eq 'submission') || 
+	    ($ENV{'form.command'} eq 'processGroup' && $counter == $total)) {
+	    $toGrade.='</form>'.&show_grading_menu_form($symb,$url) 
+	}
+	$request->print($toGrade);
 	return;
+    } else {
+	$request->print('</td></tr></table></td></tr></table>'."\n");
     }
 
     # essay grading message center
@@ -2021,11 +2072,11 @@ sub saveHandGrade {
 	    }
 	} elsif ($dropMenu eq 'reset status'
 		 && exists($record{'resource.'.$_.'.solved'})) { #don't bother if no old records -> no attempts
-	    $newrecord{'resource.'.$_.'.tries'} = 0;
-	    $newrecord{'resource.'.$_.'.solved'} = '';
-	    $newrecord{'resource.'.$_.'.award'} = '';
-	    $newrecord{'resource.'.$_.'.awarded'} = 0;
-	    $newrecord{'resource.'.$_.'.regrader'}="$ENV{'user.name'}:$ENV{'user.domain'}";
+	    foreach my $key (keys (%record)) {
+		if ($key=~/^resource\.\Q$_\E\./) { $newrecord{$key} = ''; }
+	    }
+	    $newrecord{'resource.'.$_.'.regrader'}=
+		"$ENV{'user.name'}:$ENV{'user.domain'}";
 	} elsif ($dropMenu eq '') {
 	    $pts = ($ENV{'form.GD_BOX'.$newflg.'_'.$_} ne '' ? 
 		    $ENV{'form.GD_BOX'.$newflg.'_'.$_} : 
@@ -2243,8 +2294,14 @@ sub viewgrades {
     &viewgrades_js($request);
 
     my ($symb,$url) = ($ENV{'form.symb'},$ENV{'form.url'}); 
-    my $result='<h3><font color="#339933">Manual Grading</font></h3>';
+    #need to make sure we have the correct data for later EXT calls, 
+    #thus invalidate the cache
+    &Apache::lonnet::devalidatecourseresdata(
+                 $ENV{'course.'.$ENV{'request.course.id'}.'.num'},
+                 $ENV{'course.'.$ENV{'request.course.id'}.'.domain'});
+    &Apache::lonnet::clear_EXT_cache_status();
 
+    my $result='<h3><font color="#339933">'.&mt('Manual Grading').'</font></h3>';
     $result.='<font size=+1><b>Current Resource: </b>'.$ENV{'form.probTitle'}.'</font>'."\n";
 
     #view individual student submission form - called using Javascript viewOneStudent
@@ -2290,7 +2347,8 @@ sub viewgrades {
 	    $ctsparts.'" value="'.$partid.'" />'."\n";
 	$result.='<input type="hidden" name="weight_'.
 	    $partid.'" value="'.$weight{$partid}.'" />'."\n";
-	$result.='<tr><td><b>Part  '.$partid.'&nbsp; &nbsp;Point:</b> </td><td>';
+	my $display_part=&get_display_part($partid,$url,$symb);
+	$result.='<tr><td><b>Part:</b> '.$display_part.'&nbsp; &nbsp;<b>Point:</b> </td><td>';
 	$result.='<table border="0"><tr>';  
 	my $ctr = 0;
 	while ($ctr<=$weight{$partid}) { # display radio buttons in a nice table 10 across
@@ -2329,14 +2387,17 @@ sub viewgrades {
 	my $display=&Apache::lonnet::metadata($url,$part.'.display');
 	$display =~ s|^Number of Attempts|Tries<br />|; # makes the column narrower
 	if  (!$display) { $display = &Apache::lonnet::metadata($url,$part.'.name'); }
+	my ($partid) = &split_part_type($part);
+	my $display_part=&get_display_part($partid,$url,$symb);
 	if ($display =~ /^Partial Credit Factor/) {
-	    my ($partid) = &split_part_type($part);
-	    $result.='<td><b>Score Part '.$partid.'<br />(weight = '.
-		$weight{$partid}.')</b></td>'."\n";
+	    $result.='<td><b>Score Part:</b> '.$display_part.
+		' <br /><b>(weight = '.$weight{$partid}.')</b></td>'."\n";
 	    next;
+	} else {
+	    $display =~s/\[Part: \Q$partid\E\]/Part:<\/b> $display_part/;
 	}
 	$display =~ s|Problem Status|Grade Status<br />|;
-	$result.='<td><b>'.$display.'</b></td>'."\n";
+	$result.='<td><b>'.$display.'</td>'."\n";
     }
     $result.='</tr>';
 
@@ -2466,9 +2527,10 @@ sub editgrades {
 	}
     }
     foreach my $partid (@partid) {
+	my $display_part=&get_display_part($partid,$url,$symb);
 	$result .= '<td colspan="'.$columns{$partid}.
-	    '" align="center"><b>Part '.$partid.
-	    '</b> (Weight = '.$weight{$partid}.')</td>';
+	    '" align="center"><b>Part:</b> '.$display_part.
+	    ' (Weight = '.$weight{$partid}.')</td>';
 
     }
     $result .= '</tr><tr bgcolor="#deffff">';
@@ -2562,7 +2624,7 @@ sub editgrades {
     if ($noupdate) {
 #	my $numcols=(scalar(@partid)*(scalar(@parts)-1)*2)+3;
 	my $numcols=scalar(@partid)*4+2;
-	$result .= '<tr bgcolor="#ffffff"><td align="center" colspan="'.$numcols.'">No Changes Occurred For the Students Below</td></tr>'.$noupdate;
+	$result .= '<tr bgcolor="#ffffff"><td align="center" colspan="'.$numcols.'">No Changes Occurred For the Students Below</td></tr><tr bgcolor="#ffffde">'.$noupdate;
     }
     $result .= '</table></td></tr></table>'."\n".
 	&show_grading_menu_form ($symb,$url);
@@ -2840,7 +2902,9 @@ sub csvuploadassign {
     foreach my $grade (@gradedata) {
 	my %entries=&Apache::loncommon::record_sep($grade);
 	my $username=$entries{$fields{'username'}};
+	$username=~s/\s//g;
 	my $domain=$entries{$fields{'domain'}};
+	$domain=~s/\s//g;
 	if (!exists($$classlist{"$username:$domain"})) {
 	    push(@skipped,"$username:$domain");
 	    next;
@@ -3025,6 +3089,14 @@ sub displayPage {
     my ($classlist,undef,$fullname) = &getclasslist($getsec,'1');
     my ($uname,$udom) = split(/:/,$ENV{'form.student'});
     my $usec=$classlist->{$ENV{'form.student'}}[5];
+
+    #need to make sure we have the correct data for later EXT calls, 
+    #thus invalidate the cache
+    &Apache::lonnet::devalidatecourseresdata(
+                 $ENV{'course.'.$ENV{'request.course.id'}.'.num'},
+                 $ENV{'course.'.$ENV{'request.course.id'}.'.domain'});
+    &Apache::lonnet::clear_EXT_cache_status();
+
     if (!&canview($usec)) {
 	$request->print('<font color="red">Unable to view requested student.('.$ENV{'form.student'}.')</font>');
 	$request->print(&show_grading_menu_form($symb,$url));
@@ -3064,7 +3136,7 @@ sub displayPage {
 	'<td align="center"><b>&nbsp;Prob.&nbsp;</b></td>'.
 	'<td><b>&nbsp;'.($ENV{'form.vProb'} eq 'no' ? 'Title' : 'Problem Text').'/Grade</b></td></tr>';
 
-    my ($depth,$question) = (1,1);
+    my ($depth,$question,$prob) = (1,1,1);
     $iterator->next(); # skip the first BEGIN_MAP
     my $curRes = $iterator->next(); # for "current resource"
     while ($depth > 0) {
@@ -3075,7 +3147,7 @@ sub displayPage {
 	    my $parts = $curRes->parts();
             my $title = $curRes->compTitle();
 	    my $symbx = $curRes->symb();
-	    $studentTable.='<tr bgcolor="#ffffe6"><td align="center" valign="top" >'.$question.
+	    $studentTable.='<tr bgcolor="#ffffe6"><td align="center" valign="top" >'.$prob.
 		(scalar(@{$parts}) == 1 ? '' : '<br>('.scalar(@{$parts}).'&nbsp;parts)').'</td>';
 	    $studentTable.='<td valign="top">';
 	    if ($ENV{'form.vProb'} eq 'yes' ) {
@@ -3125,6 +3197,7 @@ sub displayPage {
 		    $studentTable.='<input type="hidden" name="q_'.$question.'" value="'.$partid.'" />'."\n";
 		    $question++;
 		}
+		$prob++;
 	    }
 	    $studentTable.='</td></tr>';
 
@@ -3146,9 +3219,12 @@ sub displayPage {
 
 sub displaySubByDates {
     my ($symb,$record,$parts,$responseType,$checkIcon,$uname,$udom) = @_;
+    my $isCODE=0;
+    if (exists($record->{'resource.CODE'})) { $isCODE=1; }
     my $studentTable='<table border="0" width="100%"><tr><td bgcolor="#777777">'.
 	'<table border="0" width="100%"><tr bgcolor="#e6ffff">'.
 	'<td><b>Date/Time</b></td>'.
+	($isCODE?'<td><b>CODE</b></td>':'').
 	'<td><b>Submission</b></td>'.
 	'<td><b>Status&nbsp;</b></td></tr>';
     my ($version);
@@ -3161,17 +3237,22 @@ sub displaySubByDates {
     for ($version=1;$version<=$$record{'version'};$version++) {
 	my $timestamp = scalar(localtime($$record{$version.':timestamp'}));
 	$studentTable.='<tr bgcolor="#ffffff" valign="top"><td>'.$timestamp.'</td>';
+	if ($isCODE) {
+	    $studentTable.='<td>'.$record->{$version.':resource.CODE'}.'</td>';
+	}
 	my @versionKeys = split(/\:/,$$record{$version.':keys'});
 	my @displaySub = ();
 	foreach my $partid (@{$parts}) {
 	    my @matchKey = sort(grep /^resource\.\Q$partid\E\..*?\.submission$/,@versionKeys);
 #	    next if ($$record{"$version:resource.$partid.solved"} eq '');
+	    my $display_part=&get_display_part($partid,undef,$symb);
 	    foreach my $matchKey (@matchKey) {
-		if (exists $$record{$version.':'.$matchKey}) {
+		if (exists($$record{$version.':'.$matchKey}) &&
+		    $$record{$version.':'.$matchKey} ne '') {
 		    my ($responseId)=($matchKey=~ /^resource\.\Q$partid\E\.(.*?)\.submission$/);
-		    $displaySub[0].='<b>Part&nbsp;'.$partid.'&nbsp;';
+		    $displaySub[0].='<b>Part:</b>&nbsp;'.$display_part.'&nbsp;';
 		    $displaySub[0].='<font color="#999999">(ID&nbsp;'.
-			$responseId.')</font>&nbsp;';
+			$responseId.')</font>&nbsp;<b>';
 		    if ($$record{"$version:resource.$partid.tries"} eq '') {
 			$displaySub[0].='Trial&nbsp;not&nbsp;counted';
 		    } else {
@@ -3189,14 +3270,14 @@ sub displaySubByDates {
 		}
 	    }
 	    if (exists $$record{"$version:resource.$partid.award"}) {
-		$displaySub[1].='<b>Part&nbsp;'.$partid.'</b> &nbsp;'.
+		$displaySub[1].='<b>Part:</b>&nbsp;'.$display_part.' &nbsp;'.
 		    lc($$record{"$version:resource.$partid.award"}).' '.
 		    $mark{$$record{"$version:resource.$partid.solved"}}.
 		    '<br />';
 	    }
 	    if (exists $$record{"$version:resource.$partid.regrader"}) {
 		$displaySub[2].=$$record{"$version:resource.$partid.regrader"}.
-		    ' (<b>Part:</b> '.$partid.')';
+		    ' (<b>'.&mt('Part').':</b> '.$display_part.')';
 	    }
 	}
 	# needed because old essay regrader has not parts info
@@ -3251,7 +3332,7 @@ sub updateGradeByPage {
 
     $iterator->next(); # skip the first BEGIN_MAP
     my $curRes = $iterator->next(); # for "current resource"
-    my ($depth,$question,$changeflag)= (1,1,0);
+    my ($depth,$question,$prob,$changeflag)= (1,1,1,0);
     while ($depth > 0) {
         if($curRes == $iterator->BEGIN_MAP) { $depth++; }
         if($curRes == $iterator->END_MAP) { $depth--; }
@@ -3260,7 +3341,7 @@ sub updateGradeByPage {
 	    my $parts = $curRes->parts();
             my $title = $curRes->compTitle();
 	    my $symbx = $curRes->symb();
-	    $studentTable.='<tr bgcolor="#ffffe6"><td align="center" valign="top" >'.$question.
+	    $studentTable.='<tr bgcolor="#ffffe6"><td align="center" valign="top" >'.$prob.
 		(scalar(@{$parts}) == 1 ? '' : '<br>('.scalar(@{$parts}).'&nbsp;parts)').'</td>';
 	    $studentTable.='<td valign="top">&nbsp;<b>'.$title.'</b>&nbsp;</td>';
 
@@ -3293,12 +3374,13 @@ sub updateGradeByPage {
 		    $changeflag++;
 		    $newpts = '';
 		}
-
+		my $display_part=&get_display_part($partid,undef,
+						   $curRes->symb());
 		my $oldstatus = $ENV{'form.solved'.$question.'_'.$partid};
-		$displayPts[0].='&nbsp;<b>Part</b> '.$partid.' = '.
+		$displayPts[0].='&nbsp;<b>Part:</b> '.$display_part.' = '.
 		    (($oldstatus eq 'excused') ? 'excused' : $oldpts).
 		    '&nbsp;<br>';
-		$displayPts[1].='&nbsp;<b>Part</b> '.$partid.' = '.
+		$displayPts[1].='&nbsp;<b>Part:</b> '.$display_part.' = '.
 		     (($score eq 'excused') ? 'excused' : $newpts).
 		    '&nbsp;<br>';
 
@@ -3321,6 +3403,7 @@ sub updateGradeByPage {
 		'<td valign="top">'.$displayPts[1].'</td>'.
 		'</tr>';
 
+	    $prob++;
 	}
         $curRes = $iterator->next();
     }
@@ -3371,16 +3454,27 @@ sub getSequenceDropDown {
     return $result;
 }
 
+sub scantron_filenames {
+    my $cdom=$ENV{'course.'.$ENV{'request.course.id'}.'.domain'};
+    my $cname=$ENV{'course.'.$ENV{'request.course.id'}.'.num'};
+    my @files=&Apache::lonnet::dirlist('userfiles',$cdom,$cname,
+				    &Apache::loncommon::propath($cdom,$cname));
+    my @possiblenames;
+    foreach my $filename (sort(@files)) {
+	($filename)=split(/&/,$filename);
+	if ($filename!~/^scantron_orig_/) { next ; }
+	$filename=~s/^scantron_orig_//;
+	push(@possiblenames,$filename);
+    }
+    return @possiblenames;
+}
+
 sub scantron_uploads {
-    if (!-e $Apache::lonnet::perlvar{'lonScansDir'}) { return ''};
     my $result=	'<select name="scantron_selectfile">';
-    opendir(DIR,$Apache::lonnet::perlvar{'lonScansDir'});
-    my @files=sort(readdir(DIR));
-    foreach my $filename (@files) {
-	if ($filename eq '.' or $filename eq '..') { next; }
+    $result.="<option></option>";
+    foreach my $filename (sort(&scantron_filenames())) {
 	$result.="<option>$filename</option>\n";
     }
-    closedir(DIR);
     $result.="</select>";
     return $result;
 }
@@ -3388,6 +3482,7 @@ sub scantron_uploads {
 sub scantron_scantab {
     my $fh=Apache::File->new($Apache::lonnet::perlvar{'lonTabDir'}.'/scantronformat.tab');
     my $result='<select name="scantron_format">'."\n";
+    $result.='<option></option>'."\n";
     foreach my $line (<$fh>) {
 	my ($name,$descrip)=split(/:/,$line);
 	if ($name =~ /^\#/) { next; }
@@ -3398,6 +3493,31 @@ sub scantron_scantab {
     return $result;
 }
 
+sub scantron_CODElist {
+    my $cdom = $ENV{'course.'.$ENV{'request.course.id'}.'.domain'};
+    my $cnum = $ENV{'course.'.$ENV{'request.course.id'}.'.num'};
+    my @names=&Apache::lonnet::getkeys('CODEs',$cdom,$cnum);
+    my $namechoice='<option></option>';
+    foreach my $name (sort(@names)) {
+	if ($name =~ /^error: 2 /) { next; }
+	$namechoice.='<option value="'.$name.'">'.$name.'</option>';
+    }
+    $namechoice='<select name="scantron_CODElist">'.$namechoice.'</select>';
+    return $namechoice;
+}
+
+sub scantron_CODEunique {
+    my $result='<nobr>
+                 <input type="radio" name="scantron_CODEunique"
+                        value="Yes" checked="on" /> Yes
+                </nobr>
+                <nobr>
+                 <input type="radio" name="scantron_CODEunique"
+                        value="No" /> No
+                </nobr>';
+    return $result;
+}
+
 sub scantron_selectphase {
     my ($r) = @_;
     my ($symb,$url)=&get_symb_and_url($r);
@@ -3407,51 +3527,146 @@ sub scantron_selectphase {
     my $grading_menu_button=&show_grading_menu_form($symb,$url);
     my $file_selector=&scantron_uploads();
     my $format_selector=&scantron_scantab();
+    my $CODE_selector=&scantron_CODElist();
+    my $CODE_unique=&scantron_CODEunique();
     my $result;
+    #FIXME allow instructor to be able to download the scantron file
+    # and to upload it,
     $result.= <<SCANTRONFORM;
-<form method="post" enctype="multipart/form-data" action="/adm/grades" name="scantro_process">
-  <input type="hidden" name="command" value="scantron_validate" />
-  $default_form_data
-  <table width="100%" border="0">
+    <table width="100%" border="0">
     <tr>
       <td bgcolor="#777777">
+       <form method="post" enctype="multipart/form-data" action="/adm/grades" name="scantron_process">
+       <input type="hidden" name="command" value="scantron_warning" />
+        $default_form_data
         <table width="100%" border="0">
           <tr bgcolor="#e6ffff">
-            <td>
-              &nbsp;<b>Specify file location and which Folder/Sequence to grade</b>
+            <td colspan="2">
+              &nbsp;<b>Specify file and which Folder/Sequence to grade</b>
             </td>
           </tr>
           <tr bgcolor="#ffffe6">
+            <td> Sequence to grade: </td><td> $sequence_selector </td>
+          </tr>
+          <tr bgcolor="#ffffe6">
+            <td> Filename of scoring office file: </td><td> $file_selector </td>
+          </tr>
+          <tr bgcolor="#ffffe6">
+            <td> Format of data file: </td><td> $format_selector </td>
+          </tr>
+          <tr bgcolor="#ffffe6">
+            <td> Saved CODEs to validate against: </td><td> $CODE_selector</td>
+          </tr>
+          <tr bgcolor="#ffffe6">
+            <td> Each CODE is only to be used once:</td><td> $CODE_unique </td>
+          </tr>
+          <tr bgcolor="#ffffe6">
+	    <td> Options: </td>
             <td>
-               Sequence to grade: $sequence_selector
+                <input type="checkbox" name="scantron_options_redo" value="redo_skipped"/> Do only previously skipped records <br />
+                <input type="checkbox" name="scantron_options_ignore" value="ignore_corrections"/> Remove all exisiting corrections
 	    </td>
           </tr>
           <tr bgcolor="#ffffe6">
+            <td colspan="2">
+              <input type="submit" value="Validate Scantron Records" />
+            </td>
+          </tr>
+        </table>
+       </form>
+      </td>
+    </tr>
+SCANTRONFORM
+   
+    $r->print($result);
+
+    if (&Apache::lonnet::allowed('usc',$ENV{'request.role.domain'}) ||
+        &Apache::lonnet::allowed('usc',$ENV{'request.course.id'})) {
+
+        $r->print(<<SCANTRONFORM);
+    <tr>
+      <td bgcolor="#777777">
+        <table width="100%" border="0">
+          <tr bgcolor="#e6ffff">
             <td>
-		Filename of scoring office file: $file_selector
-	    </td>
+              &nbsp;<b>Specify a Scantron data file to upload.</b>
+            </td>
           </tr>
           <tr bgcolor="#ffffe6">
             <td>
-              Format of data file: $format_selector
-	    </td>
+SCANTRONFORM
+    my $default_form_data=&defaultFormData(&get_symb_and_url($r,1));
+    my $cdom= $ENV{'course.'.$ENV{'request.course.id'}.'.domain'};
+    my $cnum= $ENV{'course.'.$ENV{'request.course.id'}.'.num'};
+    $r->print(<<UPLOAD);
+              <script type="text/javascript" language="javascript">
+    function checkUpload(formname) {
+	if (formname.upfile.value == "") {
+	    alert("Please use the browse button to select a file from your local directory.");
+	    return false;
+	}
+	formname.submit();
+    }
+              </script>
+
+              <form enctype='multipart/form-data' action='/adm/grades' name='rules' method='post'>
+                $default_form_data
+                <input name='courseid' type='hidden' value='$cnum' />
+                <input name='domainid' type='hidden' value='$cdom' />
+                <input name='command' value='scantronupload_save' type='hidden' />
+                File to upload:<input type="file" name="upfile" size="50" />
+                <br />
+                <input type="button" onClick="javascript:checkUpload(this.form);" value="Upload Scantron Data" />
+              </form>
+UPLOAD
+
+        $r->print(<<SCANTRONFORM);
+            </td>
           </tr>
         </table>
       </td>
     </tr>
+SCANTRONFORM
+    }
+    $r->print(<<SCANTRONFORM);
+    <tr>
+      <td bgcolor="#777777">
+        <form action='/adm/grades' name='scantron_download'>
+          <input type="hidden" name="command" value="scantron_download" />
+          <table width="100%" border="0">
+            <tr bgcolor="#e6ffff">
+              <td colspan="2">
+                &nbsp;<b>Download a scoring office file</b>
+              </td>
+            </tr>
+            <tr bgcolor="#ffffe6">
+              <td> Filename of scoring office file: </td><td> $file_selector </td>
+            </tr>
+            <tr bgcolor="#ffffe6">
+              <td colspan="2">
+                <input type="submit" value="Show List of Files" />
+              </td>
+            </tr>
+          </table>
+        </form>
+      </td>
+    </tr>
+SCANTRONFORM
+
+    $r->print(<<SCANTRONFORM);
   </table>
-  <input type="submit" value="Validate Scantron Records" />
 </form>
 $grading_menu_button
 SCANTRONFORM
 
-    return $result;
+    return
 }
 
 sub get_scantron_config {
     my ($which) = @_;
     my $fh=Apache::File->new($Apache::lonnet::perlvar{'lonTabDir'}.'/scantronformat.tab');
     my %config;
+    #FIXME probably should move to XML it has already gotten a bit much now
     foreach my $line (<$fh>) {
 	my ($name,$descrip)=split(/:/,$line);
 	if ($name ne $which ) { next; }
@@ -3468,6 +3683,12 @@ sub get_scantron_config {
 	$config{'Qlength'}=$config[8];
 	$config{'Qoff'}=$config[9];
 	$config{'Qon'}=$config[10];
+	$config{'PaperID'}=$config[11];
+	$config{'PaperIDlength'}=$config[12];
+	$config{'FirstName'}=$config[13];
+	$config{'FirstNamelength'}=$config[14];
+	$config{'LastName'}=$config[15];
+	$config{'LastNamelength'}=$config[16];
 	last;
     }
     return %config;
@@ -3483,21 +3704,99 @@ sub username_to_idmap {
     return %idmap;
 }
 
+sub scantron_fixup_scanline {
+    my ($scantron_config,$scan_data,$line,$whichline,$field,$args)=@_;
+    if ($field eq 'ID') {
+	if (length($args->{'newid'}) > $$scantron_config{'IDlength'}) {
+	    return ($line,1,'New value too large');
+	}
+	if (length($args->{'newid'}) < $$scantron_config{'IDlength'}) {
+	    $args->{'newid'}=sprintf('%-'.$$scantron_config{'IDlength'}.'s',
+				     $args->{'newid'});
+	}
+	substr($line,$$scantron_config{'IDstart'}-1,
+	       $$scantron_config{'IDlength'})=$args->{'newid'};
+	if ($args->{'newid'}=~/^\s*$/) {
+	    &scan_data($scan_data,"$whichline.user",
+		       $args->{'username'}.':'.$args->{'domain'});
+	}
+    } elsif ($field eq 'CODE') {
+	if ($args->{'CODE_ignore_dup'}) {
+	    &scan_data($scan_data,"$whichline.CODE_ignore_dup",'1');
+	}
+	&scan_data($scan_data,"$whichline.useCODE",'1');
+	if ($args->{'CODE'} ne 'use_unfound') {
+	    if (length($args->{'CODE'}) > $$scantron_config{'CODElength'}) {
+		return ($line,1,'New CODE value too large');
+	    }
+	    if (length($args->{'CODE'}) < $$scantron_config{'CODElength'}) {
+		$args->{'CODE'}=sprintf('%-'.$$scantron_config{'CODElength'}.'s',$args->{'CODE'});
+	    }
+	    substr($line,$$scantron_config{'CODEstart'}-1,
+		   $$scantron_config{'CODElength'})=$args->{'CODE'};
+	}
+    } elsif ($field eq 'answer') {
+	my $length=$scantron_config->{'Qlength'};
+	my $off=$scantron_config->{'Qoff'};
+	my $on=$scantron_config->{'Qon'};
+	my $answer=${off}x$length;
+	if ($args->{'response'} eq 'none') {
+	    &scan_data($scan_data,
+		       "$whichline.no_bubble.".$args->{'question'},'1');
+	} else {
+	    substr($answer,$args->{'response'},1)=$on;
+	    &scan_data($scan_data,
+		       "$whichline.no_bubble.".$args->{'question'},undef,'1');
+	}
+	my $where=$length*($args->{'question'}-1)+$scantron_config->{'Qstart'};
+	substr($line,$where-1,$length)=$answer;
+    }
+    return $line;
+}
+
+sub scan_data {
+    my ($scan_data,$key,$value,$delete)=@_;
+    my $filename=$ENV{'form.scantron_selectfile'};
+    if (defined($value)) {
+	$scan_data->{$filename.'_'.$key} = $value;
+    }
+    if ($delete) { delete($scan_data->{$filename.'_'.$key}); }
+    return $scan_data->{$filename.'_'.$key};
+}
+
 sub scantron_parse_scanline {
-    my ($line,$scantron_config)=@_;
+    my ($line,$whichline,$scantron_config,$scan_data,$justHeader)=@_;
     my %record;
     my $questions=substr($line,$$scantron_config{'Qstart'}-1);
     my $data=substr($line,0,$$scantron_config{'Qstart'}-1);
     if ($$scantron_config{'CODElocation'} ne 0) {
 	if ($$scantron_config{'CODElocation'} < 0) {
-	    $record{'scantron.CODE'}=substr($data,$$scantron_config{'CODEstart'}-1,
+	    $record{'scantron.CODE'}=substr($data,
+					    $$scantron_config{'CODEstart'}-1,
 					    $$scantron_config{'CODElength'});
+	    if (&scan_data($scan_data,"$whichline.useCODE")) {
+		$record{'scantron.useCODE'}=1;
+	    }
+	    if (&scan_data($scan_data,"$whichline.CODE_ignore_dup")) {
+		$record{'scantron.CODE_ignore_dup'}=1;
+	    }
 	} else {
 	    #FIXME interpret first N questions
 	}
     }
     $record{'scantron.ID'}=substr($data,$$scantron_config{'IDstart'}-1,
 				  $$scantron_config{'IDlength'});
+    $record{'scantron.PaperID'}=
+	substr($data,$$scantron_config{'PaperID'}-1,
+	       $$scantron_config{'PaperIDlength'});
+    $record{'scantron.FirstName'}=
+	substr($data,$$scantron_config{'FirstName'}-1,
+	       $$scantron_config{'FirstNamelength'});
+    $record{'scantron.LastName'}=
+	substr($data,$$scantron_config{'LastName'}-1,
+	       $$scantron_config{'LastNamelength'});
+    if ($justHeader) { return \%record; }
+
     my @alphabet=('A'..'Z');
     my $questnum=0;
     while ($questions) {
@@ -3505,17 +3804,25 @@ sub scantron_parse_scanline {
 	my $currentquest=substr($questions,0,$$scantron_config{'Qlength'});
 	substr($questions,0,$$scantron_config{'Qlength'})='';
 	if (length($currentquest) < $$scantron_config{'Qlength'}) { next; }
-	my (@array)=split(/$$scantron_config{'Qon'}/,$currentquest);
-	if (scalar(@array) gt 2) {
-	    #FIXME do something intelligent with double bubbles
-	    Apache->request->print("<br ><b>Wha!!!</b> <pre>".scalar(@array).
-				   '-'.$currentquest.'-'.$questnum.'</pre><br />');
-	}
+	my @array=split($$scantron_config{'Qon'},$currentquest,-1);
 	if (length($array[0]) eq $$scantron_config{'Qlength'}) {
 	    $record{"scantron.$questnum.answer"}='';
+	    if (!&scan_data($scan_data,"$whichline.no_bubble.$questnum")) {
+		push(@{$record{"scantron.missingerror"}},$questnum);
+ 	    }
 	} else {
 	    $record{"scantron.$questnum.answer"}=$alphabet[length($array[0])];
 	}
+ 	if (scalar(@array) gt 2) {
+ 	    push(@{$record{'scantron.doubleerror'}},$questnum);
+ 	    my @ans=@array;
+ 	    my $i=length($ans[0]);shift(@ans);
+	    while ($#ans) {
+ 		$i+=length($ans[0])+1;
+ 		$record{"scantron.$questnum.answer"}.=$alphabet[$i];
+ 		shift(@ans);
+ 	    }
+ 	}
     }
     $record{'scantron.maxquest'}=$questnum;
     return \%record;
@@ -3523,7 +3830,6 @@ sub scantron_parse_scanline {
 
 sub scantron_add_delay {
     my ($delayqueue,$scanline,$errormessage,$errorcode)=@_;
-    Apache->request->print('add_delay_error '.$_[2] );
     push(@$delayqueue,
 	 {'line' => $scanline, 'emsg' => $errormessage,
 	  'ecode' => $errorcode }
@@ -3531,36 +3837,745 @@ sub scantron_add_delay {
 }
 
 sub scantron_find_student {
-    my ($scantron_record,$idmap)=@_;
+    my ($scantron_record,$scan_data,$idmap,$line)=@_;
     my $scanID=$$scantron_record{'scantron.ID'};
+    if ($scanID =~ /^\s*$/) {
+ 	return &scan_data($scan_data,"$line.user");
+    }
     foreach my $id (keys(%$idmap)) {
-	#Apache->request->print('<pre>checking studnet -'.$id.'- againt -'.$scanID.'- </pre>');
-	if (lc($id) eq lc($scanID)) {
-	    #Apache->request->print('success');
-	    return $$idmap{$id};
-	}
+ 	if (lc($id) eq lc($scanID)) {
+ 	    return $$idmap{$id};
+ 	}
     }
     return undef;
 }
 
 sub scantron_filter {
     my ($curres)=@_;
-    if (ref($curres) && $curres->is_problem() && !$curres->randomout) {
+                        # randomout is dysfunctional at best for this purpose
+    if (ref($curres) && $curres->is_problem()) { #&& !$curres->randomout) {
 	return 1;
     }
     return 0;
 }
 
-#FIXME I think I am doing this in the wrong order, I think it would be
-#better to make a several passes analyzing all of the lines in the
-#file for common errors wrong/invalid PID/username duplicated
-#PID/username, missing bubbles, double bubbles, missing/invalid CODE
-#and then get the instructor to fix all of these errors, then grade
-#the corrected one, I'll still need to catch error conditions, but
-#maybe most will taken care even before we start
+sub scantron_process_corrections {
+    my ($r) = @_;
+    my %scantron_config=&get_scantron_config($ENV{'form.scantron_format'});
+    my ($scanlines,$scan_data)=&scantron_getfile();
+    my $classlist=&Apache::loncoursedata::get_classlist();
+    my $which=$ENV{'form.scantron_line'};
+    my $line=&scantron_get_line($scanlines,$scan_data,$which);
+    my ($skip,$err,$errmsg);
+    if ($ENV{'form.scantron_skip_record'}) {
+	$skip=1;
+    } elsif ($ENV{'form.scantron_corrections'} =~ /^(duplicate|incorrect)ID$/) {
+	my $newstudent=$ENV{'form.scantron_username'}.':'.
+	    $ENV{'form.scantron_domain'};
+	my $newid=$classlist->{$newstudent}->[&Apache::loncoursedata::CL_ID];
+	($line,$err,$errmsg)=
+	    &scantron_fixup_scanline(\%scantron_config,$scan_data,$line,$which,
+				     'ID',{'newid'=>$newid,
+				    'username'=>$ENV{'form.scantron_username'},
+				    'domain'=>$ENV{'form.scantron_domain'}});
+    } elsif ($ENV{'form.scantron_corrections'} =~ /^(duplicate|incorrect)CODE$/) {
+	my $resolution=$ENV{'form.scantron_CODE_resolution'};
+	my $newCODE;
+	my %args;
+	if      ($resolution eq 'use_unfound') {
+	    $newCODE='use_unfound';
+	} elsif ($resolution eq 'use_found') {
+	    $newCODE=$ENV{'form.scantron_CODE_selectedvalue'};
+	} elsif ($resolution eq 'use_typed') {
+	    $newCODE=$ENV{'form.scantron_CODE_newvalue'};
+	} elsif ($resolution =~ /^use_closest_(\d+)/) {
+	    $newCODE=$ENV{"form.scantron_CODE_closest_$1"};
+	}
+	if ($ENV{'form.scantron_corrections'} eq 'duplicateCODE') {
+	    $args{'CODE_ignore_dup'}=1;
+	}
+	$args{'CODE'}=$newCODE;
+	($line,$err,$errmsg)=
+	    &scantron_fixup_scanline(\%scantron_config,$scan_data,$line,$which,
+				     'CODE',\%args);
+    } elsif ($ENV{'form.scantron_corrections'} =~ /^(missing|double)bubble$/) {
+	foreach my $question (split(',',$ENV{'form.scantron_questions'})) {
+	    ($line,$err,$errmsg)=
+		&scantron_fixup_scanline(\%scantron_config,$scan_data,$line,
+					 $which,'answer',
+					 { 'question'=>$question,
+		       'response'=>$ENV{"form.scantron_correct_Q_$question"}});
+	    if ($err) { last; }
+	}
+    }
+    if ($err) {
+	$r->print("Unable to accept last correction, an error occurred :$errmsg:");
+    } else {
+	&scantron_put_line($scanlines,$scan_data,$which,$line,$skip);
+	&scantron_putfile($scanlines,$scan_data);
+    }
+}
+
+sub reset_skipping_status {
+    my ($scanlines,$scan_data)=&scantron_getfile();
+    &scan_data($scan_data,'remember_skipping',undef,1);
+    &scantron_putfile(undef,$scan_data);
+}
+
+sub allow_skipping {
+    my ($scan_data,$i)=@_;
+    my %remembered=split(':',&scan_data($scan_data,'remember_skipping'));
+    delete($remembered{$i});
+    &scan_data($scan_data,'remember_skipping',join(':',%remembered));
+}
+
+sub should_be_skipped {
+    my ($scan_data,$i)=@_;
+    if ($ENV{'form.scantron_options_redo'} !~ /^redo_/) {
+	# not redoing old skips
+	return 0;
+    }
+    my %remembered=split(':',&scan_data($scan_data,'remember_skipping'));
+    if (exists($remembered{$i})) { return 0; }
+    return 1;
+}
+
+sub remember_current_skipped {
+    my ($scanlines,$scan_data)=&scantron_getfile();
+    my %to_remember;
+    for (my $i=0;$i<=$scanlines->{'count'};$i++) {
+	if ($scanlines->{'skipped'}[$i]) {
+	    $to_remember{$i}=1;
+	}
+    }
+    &Apache::lonnet::logthis('remembering '.join(':',%to_remember));
+    &scan_data($scan_data,'remember_skipping',join(':',%to_remember));
+    &scantron_putfile(undef,$scan_data);
+}
+
+sub check_for_error {
+    my ($r,$result)=@_;
+    if ($result ne 'ok' && $result ne 'not_found' ) {
+	$r->print("An error occured ($result) when trying to Remove the existing corrections.");
+    }
+}
+
+sub scantron_warning_screen {
+    my ($button_text)=@_;
+    my $title=&Apache::lonnet::gettitle($ENV{'form.selectpage'});
+    return (<<STUFF);
+<p>
+<font color="red">Please double check the information
+                 below before clicking on '$button_text'</font>
+</p>
+<table>
+<tr><td><b>Sequence To be Graded:</b></td><td>$title</td></tr>
+<tr><td><b>Data File that will be used:</b></td><td><tt>$ENV{'form.scantron_selectfile'}</tt></td></tr>
+</table>
+</font>
+<br />
+<p> If this information is correct, please click on '$button_text'.</p>
+<p> If something is incorrect, please click the 'Grading Menu' button to start over.</p>
+
+<br />
+STUFF
+}
+
+sub scantron_do_warning {
+    my ($r)=@_;
+    my ($symb,$url)=&get_symb_and_url($r);
+    if (!$symb) {return '';}
+    my $default_form_data=&defaultFormData($symb,$url);
+    $r->print(&scantron_form_start().$default_form_data);
+    my $warning=&scantron_warning_screen('Validate Records');
+    $r->print(<<STUFF);
+$warning
+<input type="submit" name="submit" value="Validate Records" />
+<input type="hidden" name="command" value="scantron_validate" />
+</form>
+STUFF
+    $r->print("<br />".&show_grading_menu_form($symb,$url)."</body></html>");
+    return '';
+}
+
+sub scantron_form_start {
+    my ($max_bubble)=@_;
+    my $result= <<SCANTRONFORM;
+<form method="post" enctype="multipart/form-data" action="/adm/grades" name="scantronupload">
+  <input type="hidden" name="selectpage" value="$ENV{'form.selectpage'}" />
+  <input type="hidden" name="scantron_format" value="$ENV{'form.scantron_format'}" />
+  <input type="hidden" name="scantron_selectfile" value="$ENV{'form.scantron_selectfile'}" />
+  <input type="hidden" name="scantron_maxbubble" value="$max_bubble" />
+  <input type="hidden" name="scantron_CODElist" value="$ENV{'form.scantron_CODElist'}" />
+  <input type="hidden" name="scantron_CODEunique" value="$ENV{'form.scantron_CODEunique'}" />
+  <input type="hidden" name="scantron_options_redo" value="$ENV{'form.scantron_options_redo'}" />
+  <input type="hidden" name="scantron_options_ignore" value="$ENV{'form.scantron_options_ignore'}" />
+SCANTRONFORM
+    return $result;
+}
 
 sub scantron_validate_file {
     my ($r) = @_;
+    my ($symb,$url)=&get_symb_and_url($r);
+    if (!$symb) {return '';}
+    my $default_form_data=&defaultFormData($symb,$url);
+    
+    # do the detection of only doing skipped records first befroe we delete
+    # them  when doing the corrections reset
+    if ($ENV{'form.scantron_options_redo'} ne 'redo_skipped_ready') {
+	&reset_skipping_status();
+    }
+    if ($ENV{'form.scantron_options_redo'} eq 'redo_skipped') {
+	&remember_current_skipped();
+	&scantron_remove_file('skipped');
+	$ENV{'form.scantron_options_redo'}='redo_skipped_ready';
+    }
+
+    if ($ENV{'form.scantron_options_ignore'} eq 'ignore_corrections') {
+	&check_for_error($r,&scantron_remove_file('corrected'));
+	&check_for_error($r,&scantron_remove_file('skipped'));
+	&check_for_error($r,&scantron_remove_scan_data());
+	$ENV{'form.scantron_options_ignore'}='done';
+    }
+
+    if ($ENV{'form.scantron_corrections'}) {
+	&scantron_process_corrections($r);
+    }
+    $r->print("<p>Gathering neccessary info.</p>");$r->rflush();
+    #get the student pick code ready
+    $r->print(&Apache::loncommon::studentbrowser_javascript());
+    my $max_bubble=&scantron_get_maxbubble($r);
+    my $result=&scantron_form_start($max_bubble).$default_form_data;
+    $r->print($result);
+    
+    my @validate_phases=( 'ID',
+			  'CODE',
+			  'doublebubble',
+			  'missingbubbles');
+    if (!$ENV{'form.validatepass'}) {
+	$ENV{'form.validatepass'} = 0;
+    }
+    my $currentphase=$ENV{'form.validatepass'};
+
+    my $stop=0;
+    while (!$stop && $currentphase < scalar(@validate_phases)) {
+	$r->print("<p> Validating ".$validate_phases[$currentphase]."</p>");
+	$r->rflush();
+	my $which="scantron_validate_".$validate_phases[$currentphase];
+	{
+	    no strict 'refs';
+	    ($stop,$currentphase)=&$which($r,$currentphase);
+	}
+    }
+    if (!$stop) {
+	my $warning=&scantron_warning_screen('Start Grading');
+	$r->print(<<STUFF);
+Validation process complete.<br />
+$warning
+<input type="submit" name="submit" value="Start Grading" />
+<input type="hidden" name="command" value="scantron_process" />
+STUFF
+
+    } else {
+	$r->print('<input type="hidden" name="command" value="scantron_validate" />');
+	$r->print("<input type='hidden' name='validatepass' value='".$currentphase."' />");
+    }
+    if ($stop) {
+	$r->print('<input type="submit" name="submit" value="Continue ->" />');
+	$r->print(' using corrected info <br />');
+	$r->print("<input type='submit' value='Skip' name='scantron_skip_record' />");
+	$r->print(" this scanline saving it for later.");
+    }
+    $r->print(" </form><br />".&show_grading_menu_form($symb,$url).
+	      "</body></html>");
+    return '';
+}
+
+sub scantron_remove_file {
+    my ($which)=@_;
+    my $cname=$ENV{'course.'.$ENV{'request.course.id'}.'.num'};
+    my $cdom=$ENV{'course.'.$ENV{'request.course.id'}.'.domain'};
+    my $file='scantron_';
+    if ($which eq 'corrected' || $which eq 'skipped') {
+	$file.=$which.'_';
+    } else {
+	return 'refused';
+    }
+    $file.=$ENV{'form.scantron_selectfile'};
+    return &Apache::lonnet::removeuserfile($cname,$cdom,$file);
+}
+
+sub scantron_remove_scan_data {
+    my $cname=$ENV{'course.'.$ENV{'request.course.id'}.'.num'};
+    my $cdom=$ENV{'course.'.$ENV{'request.course.id'}.'.domain'};
+    my @keys=&Apache::lonnet::getkeys('nohist_scantrondata',$cdom,$cname);
+    my @todelete;
+    my $filename=$ENV{'form.scantron_selectfile'};
+    foreach my $key (@keys) {
+	if ($key=~/^\Q$filename\E_/) {
+	    if ($ENV{'form.scantron_options_redo'} eq 'redo_skipped_ready' &&
+		$key=~/remember_skipping/) {
+		next;
+	    }
+	    push(@todelete,$key);
+	}
+    }
+    my $result;
+    if (@todelete) {
+	$result=&Apache::lonnet::del('nohist_scantrondata',\@todelete,$cdom,$cname);
+    }
+    return $result;
+}
+
+sub scantron_getfile {
+    #FIXME really would prefer a scantron directory
+    my $cname=$ENV{'course.'.$ENV{'request.course.id'}.'.num'};
+    my $cdom=$ENV{'course.'.$ENV{'request.course.id'}.'.domain'};
+    my $lines;
+    $lines=&Apache::lonnet::getfile('/uploaded/'.$cdom.'/'.$cname.'/'.
+		       'scantron_orig_'.$ENV{'form.scantron_selectfile'});
+    my %scanlines;
+    $scanlines{'orig'}=[(split("\n",$lines,-1))];
+    my $temp=$scanlines{'orig'};
+    $scanlines{'count'}=$#$temp;
+
+    $lines=&Apache::lonnet::getfile('/uploaded/'.$cdom.'/'.$cname.'/'.
+		       'scantron_corrected_'.$ENV{'form.scantron_selectfile'});
+    if ($lines eq '-1') {
+	$scanlines{'corrected'}=[];
+    } else {
+	$scanlines{'corrected'}=[(split("\n",$lines,-1))];
+    }
+    $lines=&Apache::lonnet::getfile('/uploaded/'.$cdom.'/'.$cname.'/'.
+		       'scantron_skipped_'.$ENV{'form.scantron_selectfile'});
+    if ($lines eq '-1') {
+	$scanlines{'skipped'}=[];
+    } else {
+	$scanlines{'skipped'}=[(split("\n",$lines,-1))];
+    }
+    my @tmp=&Apache::lonnet::dump('nohist_scantrondata',$cdom,$cname);
+    if ($tmp[0] =~ /^(error:|no_such_host)/) { @tmp=(); }
+    my %scan_data = @tmp;
+    return (\%scanlines,\%scan_data);
+}
+
+sub lonnet_putfile {
+    my ($contents,$filename)=@_;
+    my $docuname=$ENV{'course.'.$ENV{'request.course.id'}.'.num'};
+    my $docudom=$ENV{'course.'.$ENV{'request.course.id'}.'.domain'};
+    my $docuhome=$ENV{'course.'.$ENV{'request.course.id'}.'.home'};
+    $ENV{'form.sillywaytopassafilearound'}=$contents;
+    &Apache::lonnet::finishuserfileupload($docuname,$docudom,$docuhome,'sillywaytopassafilearound',$filename);
+
+}
+
+sub scantron_putfile {
+    my ($scanlines,$scan_data) = @_;
+    #FIXME really would prefer a scantron directory
+    my $cname=$ENV{'course.'.$ENV{'request.course.id'}.'.num'};
+    my $cdom=$ENV{'course.'.$ENV{'request.course.id'}.'.domain'};
+    if ($scanlines) {
+	my $prefix='scantron_';
+# no need to update orig, shouldn't change
+#   &lonnet_putfile(join("\n",@{$scanlines->{'orig'}}),$prefix.'orig_'.
+#		    $ENV{'form.scantron_selectfile'});
+	&lonnet_putfile(join("\n",@{$scanlines->{'corrected'}}),
+			$prefix.'corrected_'.
+			$ENV{'form.scantron_selectfile'});
+	&lonnet_putfile(join("\n",@{$scanlines->{'skipped'}}),
+			$prefix.'skipped_'.
+			$ENV{'form.scantron_selectfile'});
+    }
+    &Apache::lonnet::put('nohist_scantrondata',$scan_data,$cdom,$cname);
+}
+
+sub scantron_get_line {
+    my ($scanlines,$scan_data,$i)=@_;
+    if (&should_be_skipped($scan_data,$i)) { return undef; }
+    if ($scanlines->{'skipped'}[$i]) { return undef; }
+    if ($scanlines->{'corrected'}[$i]) {return $scanlines->{'corrected'}[$i];}
+    return $scanlines->{'orig'}[$i]; 
+}
+
+sub get_todo_count {
+    my ($scanlines,$scan_data)=@_;
+    my $count=0;
+    for (my $i=0;$i<=$scanlines->{'count'};$i++) {
+	my $line=&scantron_get_line($scanlines,$scan_data,$i);
+	if ($line=~/^[\s\cz]*$/) { next; }
+	$count++;
+    }
+    return $count;
+}
+
+sub scantron_put_line {
+    my ($scanlines,$scan_data,$i,$newline,$skip)=@_;
+    if ($skip) {
+	$scanlines->{'skipped'}[$i]=$newline;
+	&allow_skipping($scan_data,$i);
+	return;
+    }
+    $scanlines->{'corrected'}[$i]=$newline;
+}
+
+sub scantron_validate_ID {
+    my ($r,$currentphase) = @_;
+    
+    #get student info
+    my $classlist=&Apache::loncoursedata::get_classlist();
+    my %idmap=&username_to_idmap($classlist);
+
+    #get scantron line setup
+    my %scantron_config=&get_scantron_config($ENV{'form.scantron_format'});
+    my ($scanlines,$scan_data)=&scantron_getfile();
+
+    my %found=('ids'=>{},'usernames'=>{});
+    for (my $i=0;$i<=$scanlines->{'count'};$i++) {
+	my $line=&scantron_get_line($scanlines,$scan_data,$i);
+	if ($line=~/^[\s\cz]*$/) { next; }
+	my $scan_record=&scantron_parse_scanline($line,$i,\%scantron_config,
+						 $scan_data);
+	my $id=$$scan_record{'scantron.ID'};
+	my $found;
+	foreach my $checkid (keys(%idmap)) {
+	    if (lc($checkid) eq lc($id)) { $found=$checkid;last; }
+	}
+	if ($found) {
+	    my $username=$idmap{$found};
+	    if ($found{'ids'}{$found}) {
+		&scantron_get_correction($r,$i,$scan_record,\%scantron_config,
+					 $line,'duplicateID',$found);
+		return(1,$currentphase);
+	    } elsif ($found{'usernames'}{$username}) {
+		&scantron_get_correction($r,$i,$scan_record,\%scantron_config,
+					 $line,'duplicateID',$username);
+		return(1,$currentphase);
+	    }
+	    #FIXME store away line we previously saw the ID on to use above
+	    $found{'ids'}{$found}++;
+	    $found{'usernames'}{$username}++;
+	} else {
+	    if ($id =~ /^\s*$/) {
+		my $username=&scan_data($scan_data,"$i.user");
+		if (defined($username) && $found{'usernames'}{$username}) {
+		    &scantron_get_correction($r,$i,$scan_record,
+					     \%scantron_config,
+					     $line,'duplicateID',$username);
+		    return(1,$currentphase);
+		} elsif (!defined($username)) {
+		    &scantron_get_correction($r,$i,$scan_record,
+					     \%scantron_config,
+					     $line,'incorrectID');
+		    return(1,$currentphase);
+		}
+		$found{'usernames'}{$username}++;
+	    } else {
+		&scantron_get_correction($r,$i,$scan_record,\%scantron_config,
+					 $line,'incorrectID');
+		return(1,$currentphase);
+	    }
+	}
+    }
+
+    return (0,$currentphase+1);
+}
+
+sub scantron_get_correction {
+    my ($r,$i,$scan_record,$scan_config,$line,$error,$arg)=@_;
+
+#FIXME in the case of a duplicated ID the previous line, probaly need
+#to show both the current line and the previous one and allow skipping
+#the previous one or the current one
+
+    $r->print("<p><b>An error was detected ($error)</b>");
+    if ( defined($$scan_record{'scantron.PaperID'}) ) {
+	$r->print(" for PaperID <tt>".
+		  $$scan_record{'scantron.PaperID'}."</tt> \n");
+    } else {
+	$r->print(" in scanline $i <pre>".
+		  $line."</pre> \n");
+    }
+    $r->print('<input type="hidden" name="scantron_corrections" value="'.$error.'" />'."\n");
+    $r->print('<input type="hidden" name="scantron_line" value="'.$i.'" />'."\n");
+    if ($error =~ /ID$/) {
+	if ($error eq 'incorrectID') {
+	    $r->print("The encoded ID is not in the classlist</p>\n");
+	} elsif ($error eq 'duplicateID') {
+	    $r->print("The encoded ID has also been used by a previous paper $arg</p>\n");
+	}
+	$r->print("<p>The ID on the form is  <tt>".
+		  $$scan_record{'scantron.ID'}."</tt><br />\n");
+	$r->print("The name on the paper is ".
+		  $$scan_record{'scantron.LastName'}.",".
+		  $$scan_record{'scantron.FirstName'}."</p>");
+	$r->print("<p>How should I handle this? <br /> \n");
+	$r->print("\n<ul><li> ");
+	#FIXME it would be nice if this sent back the user ID and
+	#could do partial userID matches
+	$r->print(&Apache::loncommon::selectstudent_link('scantronupload',
+				       'scantron_username','scantron_domain'));
+	$r->print(": <input type='text' name='scantron_username' value='' />");
+	$r->print("\n@".
+		 &Apache::loncommon::select_dom_form($ENV{'request.role.domain'},'scantron_domain'));
+
+	$r->print('</li>');
+    } elsif ($error =~ /CODE$/) {
+	if ($error eq 'incorrectCODE') {
+	    $r->print("</p><p>The encoded CODE is not in the list of possible CODEs</p>\n");
+	} elsif ($error eq 'duplicateCODE') {
+	    $r->print("</p><p>The encoded CODE has also been used by a previous paper ".join(', ',@{$arg}).", and CODEs are supposed to be unique</p>\n");
+	}
+	$r->print("<p>The CODE on the form is  <tt>'".
+		  $$scan_record{'scantron.CODE'}."'</tt><br />\n");
+	$r->print("<p>The ID on the form is  <tt>".
+		  $$scan_record{'scantron.ID'}."</tt><br />\n");
+	$r->print("The name on the paper is ".
+		  $$scan_record{'scantron.LastName'}.",".
+		  $$scan_record{'scantron.FirstName'}."</p>");
+	$r->print("<p>How should I handle this? <br /> \n");
+	$r->print("\n<br /> ");
+	my $i=0;
+	if ($error eq 'incorrectCODE') {
+	    my ($max,$closest)=&scantron_get_closely_matching_CODEs($arg,$$scan_record{'scantron.CODE'});
+	    foreach my $testcode (@{$closest}) {
+		my $checked='';
+		if (!$i) { $checked=' checked="on" '; }
+		$r->print("<input type='radio' name='scantron_CODE_resolution' value='use_closest_$i' $checked /> Use the similar CODE <b><tt>".$testcode."</tt></b> instead.<input type='hidden' name='scantron_CODE_closest_$i' value='$testcode' />");
+		$r->print("\n<br />");
+		$i++;
+	    }
+	}
+	my $checked; if (!$i) { $checked=' checked="on" '; }
+	$r->print("<input type='radio' name='scantron_CODE_resolution' value='use_unfound' $checked /> Use the CODE <b><tt>".$$scan_record{'scantron.CODE'}."</tt></b> that is was on the paper, ignoring the error.");
+	$r->print("\n<br />");
+
+	$r->print(<<ENDSCRIPT);
+<script type="text/javascript">
+function change_radio(field) {
+    var slct=document.scantronupload.scantron_CODE_resolution;
+    var i;
+    for (i=0;i<slct.length;i++) {
+        if (slct[i].value==field) { slct[i].checked=true; }
+    }
+}
+</script>
+ENDSCRIPT
+	my $href="/adm/pickcode?".
+	   "form=".&Apache::lonnet::escape("scantronupload").
+	   "&scantron_format=".&Apache::lonnet::escape($ENV{'form.scantron_format'}).
+	   "&scantron_CODElist=".&Apache::lonnet::escape($ENV{'form.scantron_CODElist'}).
+	   "&curCODE=".&Apache::lonnet::escape($$scan_record{'scantron.CODE'}).
+	   "&scantron_selectfile=".&Apache::lonnet::escape($ENV{'form.scantron_selectfile'});
+	$r->print("<input type='radio' name='scantron_CODE_resolution' value='use_found' /> <a target='_blank' href='$href'>Select</a> a CODE from the list of all CODEs and use it. Selected CODE is <input readonly='true' type='text' size='8' name='scantron_CODE_selectedvalue' onfocus=\"javascript:change_radio('use_found')\" onchange=\"javascript:change_radio('use_found')\" />");
+	$r->print("\n<br />");
+	$r->print("<input type='radio' name='scantron_CODE_resolution' value='use_typed' /> Use <input type='text' size='8' name='scantron_CODE_newvalue' onfocus=\"javascript:change_radio('use_typed')\" onkeypress=\"javascript:change_radio('use_typed')\" /> as the CODE.");
+	$r->print("\n<br /><br />");
+    } elsif ($error eq 'doublebubble') {
+	$r->print("<p>There have been multiple bubbles scanned for a some question(s)</p>\n");
+	$r->print('<input type="hidden" name="scantron_questions" value="'.
+		  join(',',@{$arg}).'" />');
+	$r->print("<p>Please indicate which bubble should be used for grading</p>");
+	foreach my $question (@{$arg}) {
+	    my $selected=$$scan_record{"scantron.$question.answer"};
+	    &scantron_bubble_selector($r,$scan_config,$question,split('',$selected));
+	}
+    } elsif ($error eq 'missingbubble') {
+	$r->print("<p>There have been <b>no</b> bubbles scanned for some question(s)</p>\n");
+	$r->print("<p>Please indicate which bubble should be used for grading</p>");
+	$r->print("Some questions have no scanned bubbles\n");
+	$r->print('<input type="hidden" name="scantron_questions" value="'.
+		  join(',',@{$arg}).'" />');
+	foreach my $question (@{$arg}) {
+	    my $selected=$$scan_record{"scantron.$question.answer"};
+	    &scantron_bubble_selector($r,$scan_config,$question);
+	}
+    } else {
+	$r->print("\n<ul>");
+    }
+    $r->print("\n</li></ul>");
+
+}
+
+sub scantron_bubble_selector {
+    my ($r,$scan_config,$quest,@selected)=@_;
+    my $max=$$scan_config{'Qlength'};
+    my @alphabet=('A'..'Z');
+    $r->print("<table border='1'><tr><td rowspan='2'>$quest</td>");
+    for (my $i=0;$i<$max+1;$i++) {
+	$r->print('<td align="center">');
+	if ($selected[0] eq $alphabet[$i]) { $r->print('X'); shift(@selected) }
+	else { $r->print('&nbsp;'); }
+	$r->print('</td>');
+    }
+    $r->print('<td></td></tr><tr>');
+    for (my $i=0;$i<$max;$i++) {
+	$r->print('<td><input type="radio" name="scantron_correct_Q_'.$quest.
+		  '" value="'.$i.'" />'.$alphabet[$i]."</td>");
+    }
+    $r->print('<td><input type="radio" name="scantron_correct_Q_'.$quest.
+	      '" value="none" /> No bubble </td>');
+    $r->print('</tr></table>');
+}
+
+sub num_matches {
+    my ($orig,$code) = @_;
+    my @code=split(//,$code);
+    my @orig=split(//,$orig);
+    my $same=0;
+    for (my $i=0;$i<scalar(@code);$i++) {
+	if ($code[$i] eq $orig[$i]) { $same++; }
+    }
+    return $same;
+}
+
+sub scantron_get_closely_matching_CODEs {
+    my ($allcodes,$CODE)=@_;
+    my @CODEs;
+    foreach my $testcode (sort(keys(%{$allcodes}))) {
+	push(@{$CODEs[&num_matches($CODE,$testcode)]},$testcode);
+    }
+
+    return ($#CODEs,$CODEs[-1]);
+}
+
+sub get_codes {
+    my $old_name=$ENV{'form.scantron_CODElist'};
+    my $cdom =$ENV{'course.'.$ENV{'request.course.id'}.'.domain'};
+    my $cnum =$ENV{'course.'.$ENV{'request.course.id'}.'.num'};
+    my %result=&Apache::lonnet::get('CODEs',[$old_name],$cdom,$cnum);
+    my %allcodes=map {(&Apache::lonprintout::num_to_letters($_),1)} split(',',$result{$old_name});
+    return %allcodes;
+}
+
+sub scantron_validate_CODE {
+    my ($r,$currentphase) = @_;
+    my %scantron_config=&get_scantron_config($ENV{'form.scantron_format'});
+    if ($scantron_config{'CODElocation'} &&
+	$scantron_config{'CODEstart'} &&
+	$scantron_config{'CODElength'}) {
+	if (!defined($ENV{'form.scantron_CODElist'})) {
+	    &FIXME_blow_up()
+	}
+    } else {
+	return (0,$currentphase+1);
+    }
+    
+    my %usedCODEs;
+
+    my %allcodes=&get_codes();
+
+    my ($scanlines,$scan_data)=&scantron_getfile();
+    for (my $i=0;$i<=$scanlines->{'count'};$i++) {
+	my $line=&scantron_get_line($scanlines,$scan_data,$i);
+	if ($line=~/^[\s\cz]*$/) { next; }
+	my $scan_record=&scantron_parse_scanline($line,$i,\%scantron_config,
+						 $scan_data);
+	my $CODE=$$scan_record{'scantron.CODE'};
+	my $error=0;
+	if (!&Apache::lonnet::validCODE($CODE)) {
+	    &scantron_get_correction($r,$i,$scan_record,
+				     \%scantron_config,
+				     $line,'incorrectCODE',\%allcodes);
+	    return(1,$currentphase);
+	}
+	if (%allcodes && !exists($allcodes{$CODE}) 
+            && !$$scan_record{'scantron.useCODE'}) {
+	    &scantron_get_correction($r,$i,$scan_record,
+				     \%scantron_config,
+				     $line,'incorrectCODE',\%allcodes);
+	    return(1,$currentphase);
+	}
+	if (exists($usedCODEs{$CODE}) 
+	    && $ENV{'form.scantron_CODEunique'} eq 'yes'
+	    && !$$scan_record{'scantron.CODE_ignore_dup'}) {
+	    &scantron_get_correction($r,$i,$scan_record,
+				     \%scantron_config,
+				     $line,'duplicateCODE',$usedCODEs{$CODE});
+	    return(1,$currentphase);
+	}
+	push (@{$usedCODEs{$CODE}},$$scan_record{'scantron.PaperID'});
+    }
+    return (0,$currentphase+1);
+}
+
+sub scantron_validate_doublebubble {
+    my ($r,$currentphase) = @_;
+    #get student info
+    my $classlist=&Apache::loncoursedata::get_classlist();
+    my %idmap=&username_to_idmap($classlist);
+
+    #get scantron line setup
+    my %scantron_config=&get_scantron_config($ENV{'form.scantron_format'});
+    my ($scanlines,$scan_data)=&scantron_getfile();
+    for (my $i=0;$i<=$scanlines->{'count'};$i++) {
+	my $line=&scantron_get_line($scanlines,$scan_data,$i);
+	if ($line=~/^[\s\cz]*$/) { next; }
+	my $scan_record=&scantron_parse_scanline($line,$i,\%scantron_config,
+						 $scan_data);
+	if (!defined($$scan_record{'scantron.doubleerror'})) { next; }
+	&scantron_get_correction($r,$i,$scan_record,\%scantron_config,$line,
+				 'doublebubble',
+				 $$scan_record{'scantron.doubleerror'});
+    	return (1,$currentphase);
+    }
+    return (0,$currentphase+1);
+}
+
+sub scantron_get_maxbubble {
+    my ($r)=@_;
+    if (defined($ENV{'form.scantron_maxbubble'}) &&
+	$ENV{'form.scantron_maxbubble'}) {
+	return $ENV{'form.scantron_maxbubble'};
+    }
+    my $navmap=Apache::lonnavmaps::navmap->new();
+    my (undef,undef,$sequence)=
+	&Apache::lonnet::decode_symb($ENV{'form.selectpage'});
+    my $map=$navmap->getResourceByUrl($sequence);
+    my @resources=$navmap->retrieveResources($map,\&scantron_filter,1,0);
+    &Apache::lonnet::delenv('form.counter');
+    foreach my $resource (@resources) {
+	my $result=&Apache::lonnet::ssi($resource->src());
+    }
+    &Apache::lonnet::delenv('scantron\.');
+    my $envfile=$ENV{'user.environment'};
+    $envfile=~/\/([^\/]+)\.id$/;
+    $envfile=$1;
+    &Apache::lonnet::transfer_profile_to_env($r->dir_config('lonIDsDir'),
+					     $envfile);
+    $ENV{'form.scantron_maxbubble'}=$ENV{'form.counter'}-1;
+    return $ENV{'form.scantron_maxbubble'};
+}
+
+sub scantron_validate_missingbubbles {
+    my ($r,$currentphase) = @_;
+    #get student info
+    my $classlist=&Apache::loncoursedata::get_classlist();
+    my %idmap=&username_to_idmap($classlist);
+
+    #get scantron line setup
+    my %scantron_config=&get_scantron_config($ENV{'form.scantron_format'});
+    my ($scanlines,$scan_data)=&scantron_getfile();
+    my $max_bubble=&scantron_get_maxbubble();
+    if (!$max_bubble) { $max_bubble=2**31; }
+    for (my $i=0;$i<=$scanlines->{'count'};$i++) {
+	my $line=&scantron_get_line($scanlines,$scan_data,$i);
+	if ($line=~/^[\s\cz]*$/) { next; }
+	my $scan_record=&scantron_parse_scanline($line,$i,\%scantron_config,
+						 $scan_data);
+	if (!defined($$scan_record{'scantron.missingerror'})) { next; }
+	my @to_correct;
+	foreach my $missing (@{$$scan_record{'scantron.missingerror'}}) {
+	    if ($missing > $max_bubble) { next; }
+	    push(@to_correct,$missing);
+	}
+	if (@to_correct) {
+	    &scantron_get_correction($r,$i,$scan_record,\%scantron_config,
+				     $line,'missingbubble',\@to_correct);
+	    return (1,$currentphase);
+	}
+
+    }
+    return (0,$currentphase+1);
 }
 
 sub scantron_process_students {
@@ -3571,8 +4586,7 @@ sub scantron_process_students {
     my $default_form_data=&defaultFormData($symb,$url);
 
     my %scantron_config=&get_scantron_config($ENV{'form.scantron_format'});
-    my $scanlines=Apache::File->new($Apache::lonnet::perlvar{'lonScansDir'}."/$ENV{'form.scantron_selectfile'}");
-    my @scanlines=<$scanlines>;
+    my ($scanlines,$scan_data)=&scantron_getfile();
     my $classlist=&Apache::loncoursedata::get_classlist();
     my %idmap=&username_to_idmap($classlist);
     my $navmap=Apache::lonnavmaps::navmap->new();
@@ -3589,97 +4603,212 @@ SCANTRONFORM
     my @delayqueue;
     my %completedstudents;
     
-    my %prog_state=&Apache::lonhtmlcommon::Create_PrgWin($r,
-	           'Scantron Status','Scantron Progress',scalar(@scanlines));
+    my $count=&get_todo_count($scanlines,$scan_data);
+    my %prog_state=&Apache::lonhtmlcommon::Create_PrgWin($r,'Scantron Status',
+ 				    'Scantron Progress',$count,
+				    'inline',undef,'scantronupload');
     &Apache::lonhtmlcommon::Update_PrgWin($r,\%prog_state,
 					  'Processing first student');
     my $start=&Time::HiRes::time();
-    foreach my $line (@scanlines) {
-	$r->print('<pre>line is'.$line.'</pre>');
-
-	chomp($line);
-	my $scan_record=&scantron_parse_scanline($line,\%scantron_config);
-	my ($uname,$udom);
-	unless ($uname=&scantron_find_student($scan_record,\%idmap)) {
-	    &scantron_add_delay(\@delayqueue,$line,
-				'Unable to find a student that matches',1);
-	    next;
-	}
-	if (exists $completedstudents{$uname}) {
-	    &scantron_add_delay(\@delayqueue,$line,
-				'Student '.$uname.' has multiple sheets',2);
-	    next;
-	}
-	$r->print('<pre>doing studnet'.$uname.'</pre>');
-	($uname,$udom)=split(/:/,$uname);
-	&Apache::lonnet::delenv('form.counter');
-	&Apache::lonnet::appenv(%$scan_record);
-#    &Apache::lonhomework::showhash(%ENV);
-#    $Apache::lonxml::debug=1;
-#	&Apache::lonxml::debug("line is $line");
+    my $i=-1;
+    my ($uname,$udom,$started);
+    while ($i<$scanlines->{'count'}) {
+ 	($uname,$udom)=('','');
+ 	$i++;
+ 	my $line=&scantron_get_line($scanlines,$scan_data,$i);
+ 	if ($line=~/^[\s\cz]*$/) { next; }
+	if ($started) {
+	    &Apache::lonhtmlcommon::Increment_PrgWin($r,\%prog_state,
+						     'last student');
+	}
+	$started=1;
+ 	my $scan_record=&scantron_parse_scanline($line,$i,\%scantron_config,
+ 						 $scan_data);
+ 	unless ($uname=&scantron_find_student($scan_record,$scan_data,
+ 					      \%idmap,$i)) {
+  	    &scantron_add_delay(\@delayqueue,$line,
+ 				'Unable to find a student that matches',1);
+ 	    next;
+  	}
+ 	if (exists $completedstudents{$uname}) {
+ 	    &scantron_add_delay(\@delayqueue,$line,
+ 				'Student '.$uname.' has multiple sheets',2);
+ 	    next;
+ 	}
+  	($uname,$udom)=split(/:/,$uname);
+  	&Apache::lonnet::delenv('form.counter');
+  	&Apache::lonnet::appenv(%$scan_record);
 	
-	    my $i=0;
+	my $i=0;
 	foreach my $resource (@resources) {
 	    $i++;
-	    my $result=&Apache::lonnet::ssi($resource->src(),
-				 ('submitted'     =>'scantron',
-				  'grade_target'  =>'grade',
-				  'grade_username'=>$uname,
-				  'grade_domain'  =>$udom,
-				  'grade_courseid'=>$ENV{'request.course.id'},
-				  'grade_symb'    =>$resource->symb()));
-#	    my %score=&Apache::lonnet::restore($resource->symb(),
-#					       $ENV{'request.course.id'},
-#					       $udom,$uname);
-#	    foreach my $part ($resource->{PARTS}) {
-#		if ($score{'resource.'.$part.'.solved'} =~ /^correct/) {
-#		    $studentcorrect++;
-#		    $totalcorrect++;
-#		} else {
-#		    $studentincorrect++;
-#		    $totalincorrect++;
-#		}
-#	    }
-#	    $r->print('<pre>'.
-#		      $resource->symb().'-'.
-#		      $resource->src().'-'.'</pre>result is'.$result);
-#	    &Apache::lonhomework::showhash(%score);
-	#    if ($i eq 3) {last;}
+	    my %form=('submitted'     =>'scantron',
+		      'grade_target'  =>'grade',
+		      'grade_username'=>$uname,
+		      'grade_domain'  =>$udom,
+		      'grade_courseid'=>$ENV{'request.course.id'},
+		      'grade_symb'    =>$resource->symb());
+	    if (exists($scan_record->{'scantron.CODE'}) &&
+		$scan_record->{'scantron.CODE'}) {
+		$form{'CODE'}=$scan_record->{'scantron.CODE'};
+	    } else {
+		$form{'CODE'}='';
+	    }
+	    my $result=&Apache::lonnet::ssi($resource->src(),%form);
+	    if (&Apache::loncommon::connection_aborted($r)) { last; }
 	}
 	$completedstudents{$uname}={'line'=>$line};
+	if (&Apache::loncommon::connection_aborted($r)) { last; }
     } continue {
 	&Apache::lonnet::delenv('form.counter');
 	&Apache::lonnet::delenv('scantron\.');
-	&Apache::lonhtmlcommon::Increment_PrgWin($r,\%prog_state,
-						 'last student');
-	#last;
-	#FIXME
-	#get iterator for $sequence
-	#foreach question 'submit' the students answer to the server
-	#   through grade target {
-	#   generate data to pass back that includes grade recevied
-	#}
     }
     &Apache::lonhtmlcommon::Close_PrgWin($r,\%prog_state);
-    my $lasttime = &Time::HiRes::time()-$start;
-    $r->print("<p>took $lasttime</p>");
+#    my $lasttime = &Time::HiRes::time()-$start;
+#    $r->print("<p>took $lasttime</p>");
 
-    #$Apache::lonxml::debug=0;
-    foreach my $delay (@delayqueue) {
-	#FIXME
-	#print out each delayed student with interface to select how
-	#  to repair student provided info
-	#Expected errors include
-	#  1 bad/no stuid/username
-	#  2 invalid bubblings
-	
+    $navmap->untieHashes();
+    $r->print("</form>");
+    $r->print(&show_grading_menu_form($symb,$url));
+    return '';
+}
+
+sub scantron_upload_scantron_data {
+    my ($r)=@_;
+    $r->print(&Apache::loncommon::coursebrowser_javascript($ENV{'request.role.domain'}));
+    my $select_link=&Apache::loncommon::selectcourse_link('rules','courseid',
+							  'domainid',
+							  'coursename');
+    my $domsel=&Apache::loncommon::select_dom_form($ENV{'request.role.domain'},
+						   'domainid');
+    my $default_form_data=&defaultFormData(&get_symb_and_url($r,1));
+    $r->print(<<UPLOAD);
+<script type="text/javascript" language="javascript">
+    function checkUpload(formname) {
+	if (formname.upfile.value == "") {
+	    alert("Please use the browse button to select a file from your local directory.");
+	    return false;
+	}
+	formname.submit();
+    }
+</script>
+
+<form enctype='multipart/form-data' action='/adm/grades' name='rules' method='post'>
+$default_form_data
+<table>
+<tr><td>$select_link </td></tr>
+<tr><td>Course ID:   </td><td><input name='courseid' type='text' />  </td></tr>
+<tr><td>Course Name: </td><td><input name='coursename' type='text' /></td></tr>
+<tr><td>Domain:      </td><td>$domsel                                </td></tr>
+<tr><td>File to upload:</td><td><input type="file" name="upfile" size="50" /></td></tr>
+</table>
+<input name='command' value='scantronupload_save' type='hidden' />
+<input type="button" onClick="javascript:checkUpload(this.form);" value="Upload Scantron Data" />
+</form>
+UPLOAD
+    return '';
+}
+
+sub scantron_upload_scantron_data_save {
+    my($r)=@_;
+    my ($symb,$url)=&get_symb_and_url($r,1);
+    my $doanotherupload=
+	'<br /><form action="/adm/grades" method="post">'."\n".
+	'<input type="hidden" name="command" value="scantronupload" />'."\n".
+	'<input type="submit" name="submit" value="Do Another Upload" />'."\n".
+	'</form>'."\n";
+    if (!&Apache::lonnet::allowed('usc',$ENV{'form.domainid'}) &&
+	!&Apache::lonnet::allowed('usc',
+			    $ENV{'form.domainid'}.'_'.$ENV{'form.courseid'})) {
+	$r->print("You are not allowed to upload Scantron data to the requested course.<br />");
+	if ($symb) {
+	    $r->print(&show_grading_menu_form($symb,$url));
+	} else {
+	    $r->print($doanotherupload);
+	}
+	return '';
     }
+    $r->print("Doing upload to ".$ENV{'form.courseid'}." <br />");
+    my $home=&Apache::lonnet::homeserver($ENV{'form.courseid'},
+					 $ENV{'form.domainid'});
+    my $fname=$ENV{'form.upfile.filename'};
     #FIXME
-    # if delay queue exists 2 submits one to process delayed students one
-    #     to ignore delayed students, possibly saving the delay queue for later
-    
-    $navmap->untieHashes();
+    #copied from lonnet::userfileupload()
+    #make that function able to target a specified course
+    # Replace Windows backslashes by forward slashes
+    $fname=~s/\\/\//g;
+    # Get rid of everything but the actual filename
+    $fname=~s/^.*\/([^\/]+)$/$1/;
+    # Replace spaces by underscores
+    $fname=~s/\s+/\_/g;
+    # Replace all other weird characters by nothing
+    $fname=~s/[^\w\.\-]//g;
+    # See if there is anything left
+    unless ($fname) { return 'error: no uploaded file'; }
+    $fname='scantron_orig_'.$fname;
+    if (length($ENV{'form.upfile'}) < 2) {
+	$r->print("<font color='red'>Error:</font> The file you attempted to upload, <tt>".&HTML::Entities::encode($ENV{'form.upfile.filename'},'<>&"')."</tt>, contained no information. Please check that you entered the correct filename.");
+    } else {
+	my $result=&Apache::lonnet::finishuserfileupload($ENV{'form.courseid'},$ENV{'form.domainid'},$home,'upfile',$fname);
+	if ($result =~ m|^/uploaded/|) {
+	    $r->print("<font color='green'>Success:</font> Successfully uploaded ".(length($ENV{'form.upfile'})-1)." bytes of data into location <tt>".$result."</tt>");
+	} else {
+	    $r->print("<font color='red'>Error:</font> An error (".$result.") occured when attempting to upload the file, <tt>".&HTML::Entities::encode($ENV{'form.upfile.filename'},'<>&"')."</tt>");
+	}
+    }
+    if ($symb) {
+	$r->print(&show_grading_menu_form($symb,$url));
+    } else {
+	$r->print($doanotherupload);
+    }
+    return '';
+}
+
+sub valid_file {
+    my ($requested_file)=@_;
+    foreach my $filename (sort(&scantron_filenames())) {
+	&Apache::lonnet::logthis("$requested_file  $filename");
+	if ($requested_file eq $filename) { return 1; }
+    }
+    return 0;
 }
+
+sub scantron_download_scantron_data {
+    my ($r)=@_;
+    my $default_form_data=&defaultFormData(&get_symb_and_url($r,1));
+    my $cname=$ENV{'course.'.$ENV{'request.course.id'}.'.num'};
+    my $cdom=$ENV{'course.'.$ENV{'request.course.id'}.'.domain'};
+    my $file=$ENV{'form.scantron_selectfile'};
+    if (! &valid_file($file)) {
+	$r->print(<<ERROR);
+	<p>
+	    The requested file name was invalid.
+        </p>
+ERROR
+	$r->print(&show_grading_menu_form(&get_symb_and_url($r,1)));
+	return;
+    }
+    my $orig='/uploaded/'.$cdom.'/'.$cname.'/scantron_orig_'.$file;
+    my $corrected='/uploaded/'.$cdom.'/'.$cname.'/scantron_corrected_'.$file;
+    my $skipped='/uploaded/'.$cdom.'/'.$cname.'/scantron_skipped_'.$file;
+    &Apache::lonnet::allowuploaded('/adm/grades',$orig);
+    &Apache::lonnet::allowuploaded('/adm/grades',$corrected);
+    &Apache::lonnet::allowuploaded('/adm/grades',$skipped);
+    $r->print(<<DOWNLOAD);
+    <p>
+	<a href="$orig">Original</a> file as uploaded by the scantron office.
+    </p>
+    <p>
+	<a href="$corrected">Corrections</a>, a file of corrected records that were used in grading.
+    </p>
+    <p>
+	<a href="$skipped">Skipped</a>, a file of records that were skipped.
+    </p>
+DOWNLOAD
+    $r->print(&show_grading_menu_form(&get_symb_and_url($r,1)));
+    return '';
+}
+
 #-------- end of section for handling grading scantron forms -------
 #
 #-------------------------------------------------------------------
@@ -3782,7 +4911,7 @@ GRADINGMENUJS
 
     $result.='<table width="100%" border=0>';
     $result.='<tr bgcolor="#ffffe6" valign="top"><td>'."\n".
-	'&nbsp;Select Section: <select name="section">'."\n";
+	'&nbsp;'.&mt('Select Section').': <select name="section">'."\n";
     if (ref($sections)) {
 	foreach (sort (@$sections)) {
 	    $result.='<option value="'.$_.'" '.
@@ -3791,7 +4920,7 @@ GRADINGMENUJS
     }
     $result.= '<option value="all" '.($saveSec eq 'all' ? 'selected="on"' : ''). '>all</select> &nbsp; ';
 
-    $result.='Student Status:</b>'.&Apache::lonhtmlcommon::StatusOptions($saveStatus,undef,1,undef);
+    $result.=&mt('Student Status').':</b>'.&Apache::lonhtmlcommon::StatusOptions($saveStatus,undef,1,undef);
 
     if (ref($sections) && (grep /no/,@$sections)) {
 	$result.='&nbsp;(Section "no" implies the students were not assigned a section.)<br />';
@@ -3800,8 +4929,8 @@ GRADINGMENUJS
 
     $result.='<tr bgcolor="#ffffe6"valign="top"><td>'.
 	'<input type="radio" name="radioChoice" value="submission" '.
-	($saveCmd eq 'submission' ? 'checked' : '').'> '.'<b>Current Resource:</b> For one or more students '.
-	'<select name="submitonly">'.
+	($saveCmd eq 'submission' ? 'checked' : '').'> '.'<b>'.&mt('Current Resource').':</b> '.&mt('For one or more students').
+	' <select name="submitonly">'.
 	'<option value="yes" '.
 	($saveSub eq 'yes' ? 'selected="on"' : '').'>with submissions</option>'.
 	'<option value="graded" '.
@@ -3829,17 +4958,18 @@ GRADINGMENUJS
 
     $result.='<table width="100%" border=0>';
     $result.='<tr bgcolor="#ffffe6"><td>'.
-	'<input type="button" onClick="javascript:checkChoice(this.form,\'3\',\'csvform\');" value="Upload" />'.
-	' scores from file </td></tr>'."\n";
+	'<input type="button" onClick="javascript:checkChoice(this.form,\'3\',\'csvform\');" value="'.&mt('Upload').'" />'.
+	' '.&mt('scores from file').' </td></tr>'."\n";
 
     $result.='<tr bgcolor="#ffffe6"valign="top"><td colspan="2">'.
 	'<input type="button" onClick="javascript:checkChoice(this.form,\'4\',\'scantron_selectphase\');'.
-	'" value="Grade" /> scantron forms</td></tr>'."\n";
+	'" value="'.&mt('Grade').'" /> scantron forms</td></tr>'."\n";
 
     if ((&Apache::lonnet::allowed('mgr',$ENV{'request.course.id'})) && ($symb)) {
 	$result.='<tr bgcolor="#ffffe6"valign="top"><td>'.
-	    '<input type="button" onClick="javascript:checkChoice(this.form,\'5\',\'verify\');" value="Verify" />'.
-	    ' submission Receipt no: '.unpack("%32C*",$Apache::lonnet::perlvar{'lonHostID'}).
+	    '<input type="button" onClick="javascript:checkChoice(this.form,\'5\',\'verify\');" value="'.&mt('Verify').'" />'.
+	    ' '.&mt('receipt').': '.
+	    &Apache::lonnet::recprefix($ENV{'request.course.id'}).
 	    '-<input type="text" name="receipt" size="4" onChange="javascript:checkReceiptNo(this.form,\'OK\')">'.
 	    '</td></tr>'."\n";
     } 
@@ -3864,14 +4994,18 @@ sub handler {
     &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'});
     my $url=$ENV{'form.url'};
     my $symb=$ENV{'form.symb'};
-    my $command=$ENV{'form.command'};
+    my @commands=&Apache::loncommon::get_env_multiple('form.command');
+    my $command=$commands[0];
+    if ($#commands > 0) {
+	&Apache::lonnet::logthis("grades got multiple commands ".join(':',@commands));
+    }
     if (!$url) {
 	my ($temp1,$temp2);
 	($temp1,$temp2,$ENV{'form.url'})=&Apache::lonnet::decode_symb($symb);
 	$url = $ENV{'form.url'};
     }
     &send_header($request);
-    if ($url eq '' && $symb eq '') {
+    if ($url eq '' && $symb eq '' && $command eq '') {
 	if ($ENV{'user.adv'}) {
 	    if (($ENV{'form.codeone'}) && ($ENV{'form.codetwo'}) &&
 		($ENV{'form.codethree'})) {
@@ -3912,7 +5046,6 @@ sub handler {
 		delete($perm{'mgr'});
 	    }
 	}
-
 	if ($command eq 'submission' && $perm{'vgr'}) {
 	    ($ENV{'form.student'} eq '' ? &listStudents($request) : &submission($request,0,0));
 	} elsif ($command eq 'pickStudentPage' && $perm{'vgr'}) {
@@ -3952,12 +5085,25 @@ sub handler {
 	    }
 	} elsif ($command eq 'scantron_selectphase' && $perm{'mgr'}) {
 	    $request->print(&scantron_selectphase($request));
+ 	} elsif ($command eq 'scantron_warning' && $perm{'mgr'}) {
+ 	    $request->print(&scantron_do_warning($request));
 	} elsif ($command eq 'scantron_validate' && $perm{'mgr'}) {
 	    $request->print(&scantron_validate_file($request));
 	} elsif ($command eq 'scantron_process' && $perm{'mgr'}) {
 	    $request->print(&scantron_process_students($request));
+ 	} elsif ($command eq 'scantronupload' && 
+ 		 (&Apache::lonnet::allowed('usc',$ENV{'request.role.domain'})||
+		  &Apache::lonnet::allowed('usc',$ENV{'request.course.id'}))) {
+ 	    $request->print(&scantron_upload_scantron_data($request)); 
+ 	} elsif ($command eq 'scantronupload_save' &&
+ 		 (&Apache::lonnet::allowed('usc',$ENV{'request.role.domain'})||
+		  &Apache::lonnet::allowed('usc',$ENV{'request.course.id'}))) {
+ 	    $request->print(&scantron_upload_scantron_data_save($request));
+ 	} elsif ($command eq 'scantron_download' &&
+		 &Apache::lonnet::allowed('usc',$ENV{'request.course.id'})) {
+ 	    $request->print(&scantron_download_scantron_data($request));
 	} elsif ($command) {
-	    $request->print("Access Denied");
+	    $request->print("Access Denied ($command)");
 	}
     }
     &send_footer($request);
@@ -3973,12 +5119,12 @@ sub send_header {
 #remotewindow.close();
 #</script>"); 
     $request->print(&Apache::loncommon::bodytag('Grading'));
+    $request->rflush();
 }
 
 sub send_footer {
     my ($request)= @_;
-    $request->print('</body>');
-    $request->print(&Apache::lontexconvert::footer());
+    $request->print('</body></html>');
 }
 
 1;