1: # LearningOnline Network with CAPA
2: # option list style responses
3: #
4: # $Id: optionresponse.pm,v 1.50 2002/10/01 20:17:04 sakharuk Exp $
5: #
6: # Copyright Michigan State University Board of Trustees
7: #
8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
9: #
10: # LON-CAPA is free software; you can redistribute it and/or modify
11: # it under the terms of the GNU General Public License as published by
12: # the Free Software Foundation; either version 2 of the License, or
13: # (at your option) any later version.
14: #
15: # LON-CAPA is distributed in the hope that it will be useful,
16: # but WITHOUT ANY WARRANTY; without even the implied warranty of
17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18: # GNU General Public License for more details.
19: #
20: # You should have received a copy of the GNU General Public License
21: # along with LON-CAPA; if not, write to the Free Software
22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23: #
24: # /home/httpd/html/adm/gpl.txt
25: #
26: # http://www.lon-capa.org/
27: #
28: # 2/21 Guy
29: # 01/18 Alex
30: package Apache::optionresponse;
31: use strict;
32: use Apache::response;
33:
34: BEGIN {
35: &Apache::lonxml::register('Apache::optionresponse',('optionresponse'));
36: }
37:
38: sub start_optionresponse {
39: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
40: my $result='';
41: #when in a option response use these
42: &Apache::lonxml::register('Apache::optionresponse',('foilgroup','foil','conceptgroup'));
43: push (@Apache::lonxml::namespace,'optionresponse');
44: my $id = &Apache::response::start_response($parstack,$safeeval);
45: if ($target eq 'edit') {
46: $result.=&Apache::edit::start_table($token).
47: "<tr><td>Multiple Option Response Question</td><td>Delete:".
48: &Apache::edit::deletelist($target,$token)
49: ."</td><td> ".
50: &Apache::edit::end_row().
51: &Apache::edit::start_spanning_row().
52: "\n";
53: $result.=&Apache::edit::text_arg('Max Number Of Shown Foils:','max',
54: $token,'4').
55: &Apache::edit::select_arg('Randomize Foil Order','randomize',
56: ['yes','no'],$token).
57: &Apache::edit::end_row().&Apache::edit::start_spanning_row();
58: } elsif ($target eq 'modified') {
59: my $constructtag=&Apache::edit::get_new_args($token,$parstack,
60: $safeeval,'max','randomize');
61: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
62: } elsif ($target eq 'meta') {
63: $result=&Apache::response::meta_package_write('optionresponse');
64: } elsif ($target eq 'analyze') {
65: my $part_id="$Apache::inputtags::part.$Apache::inputtags::response[-1]";
66: push (@{ $Apache::lonhomework::analyze{"parts"} },$part_id);
67: }
68: return $result;
69: }
70:
71: sub end_optionresponse {
72: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
73: &Apache::response::end_response;
74: pop @Apache::lonxml::namespace;
75: &Apache::lonxml::deregister('Apache::optionresponse',('foilgroup','foil','conceptgroup'));
76: my $result;
77: if ($target eq 'edit') { $result=&Apache::edit::end_table(); }
78: return $result;
79: }
80:
81: %Apache::response::foilgroup=();
82: sub start_foilgroup {
83: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
84:
85: my $result='';
86: %Apache::response::foilgroup=();
87: $Apache::optionresponse::conceptgroup=0;
88: &Apache::response::setrandomnumber();
89: if ($target eq 'edit') {
90: my $optionlist="<option></option>\n";
91: my $option;
92: my @opt;
93: eval '@opt ='. &Apache::lonxml::get_param('options',$parstack,$safeeval);
94: my $count=1;
95: foreach $option (@opt) {
96: $optionlist.="<option value=\"$count\">$option</option>\n";
97: $count++;
98: }
99: my $insertlist=&Apache::edit::insertlist($target,$token);
100: $result.=&Apache::edit::start_table($token);
101: $result.= (<<ENDTABLE);
102: <tr><td>Select Options</td>
103: <td>
104: Add new Option: <input type="text" name="$Apache::lonxml::curdepth.options" />
105: </td>
106: <td>Delete an Option:
107: <select name="$Apache::lonxml::curdepth.deleteopt">$optionlist</select>
108: ENDTABLE
109: $result.= &Apache::edit::end_row();
110: $result.= &Apache::edit::start_spanning_row();
111: $result.= $insertlist.'<br />';
112: }
113: if ($target eq 'modified') {
114: my @options;
115: my $optchanged=0;
116: eval '@options ='.&Apache::lonxml::get_param('options',$parstack,$safeeval);
117: if ($ENV{"form.$Apache::lonxml::curdepth.deleteopt"}) {
118: my $delopt=$ENV{"form.$Apache::lonxml::curdepth.deleteopt"};
119: &Apache::lonxml::debug("Deleting :$delopt:");
120: splice(@options,$delopt-1,1);
121: $optchanged=1;
122: }
123: if ($ENV{"form.$Apache::lonxml::curdepth.options"}) {
124: my $newopt = $ENV{"form.$Apache::lonxml::curdepth.options"};
125: if ($options[0]) {
126: push(@options,$newopt);
127: } else {
128: $options[0]=$newopt;
129: }
130: $optchanged=1;
131: }
132: if ($optchanged) {
133: $result = "<foilgroup options=\"(";
134: foreach my $option (@options) {
135: $option=~s/\'/\\\'/g;
136: &Apache::lonxml::debug("adding option :$option:");
137: $result .="'".$option."',";
138: }
139: chop $result;
140: $result.=')">';
141: } # else nothing changed so just use the default mechanism
142: }
143: if ($target eq 'tex') {
144: $result .= ' \begin{enumerate} ';
145: }
146: return $result;
147: }
148:
149: sub end_foilgroup {
150: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
151:
152: my $result;
153: if ($target eq 'grade' || $target eq 'web' || $target eq 'answer' || $target eq 'tex' || $target eq 'analyze') {
154: my $name;
155: my @opt;
156: eval '@opt ='.&Apache::lonxml::get_param('options',$parstack,$safeeval);
157: &Apache::lonxml::debug("Options are $#opt");
158: my $max = &Apache::lonxml::get_param('max',$parstack,$safeeval,'-2');
159: my $randomize = &Apache::lonxml::get_param('randomize',$parstack,
160: $safeeval,'-2');
161: if ($target eq 'web' || $target eq 'tex') {
162: $result.=&displayfoils($target,$max,$randomize,@opt);
163: } elsif ( $target eq 'answer') {
164: $result.=&displayanswers($max,$randomize,@opt);
165: } elsif ( $target eq 'analyze') {
166: my $part_id="$Apache::inputtags::part.$Apache::inputtags::response[-1]";
167: foreach my $name (@{ $Apache::response::foilgroup{'names'} }) {
168: if (defined($Apache::lonhomework::analyze{"$part_id.foil.value.$name"})) { next; }
169: push (@{ $Apache::lonhomework::analyze{"$part_id.foils"} },$name);
170: $Apache::lonhomework::analyze{"$part_id.foil.value.$name"} =
171: $Apache::response::foilgroup{"$name.value"};
172: $Apache::lonhomework::analyze{"$part_id.foil.text.$name"} =
173: $Apache::response::foilgroup{"$name.text"};
174: }
175: push (@{ $Apache::lonhomework::analyze{"$part_id.options"} },@opt);
176: push (@{ $Apache::lonhomework::analyze{"$part_id.shown"} },&whichfoils($max,$randomize));
177: } elsif ( $target eq 'grade') {
178: if ( defined $ENV{'form.submitted'}) {
179: my @whichopt = &whichfoils($max,$randomize);
180: my $temp=1;my $name;
181: my %responsehash;
182: my $right=0;
183: my $wrong=0;
184: my $ignored=0;
185: foreach $name (@whichopt) {
186: my $response = $ENV{'form.HWVAL_'.$Apache::inputtags::response['-1'].":$temp"};
187: $responsehash{$name}=$response;
188: if ( $response =~ /[^\s]/) {
189: my $value=$Apache::response::foilgroup{$name.'.value'};
190: &Apache::lonxml::debug("submitted a $response for $value<br />\n");
191: if ($value eq $response) {$right++;} else {$wrong++;}
192: } else {
193: $ignored++;
194: }
195: $temp++;
196: }
197: my $part=$Apache::inputtags::part;
198: my $id = $Apache::inputtags::response['-1'];
199: my $responsestr=&Apache::lonnet::hash2str(%responsehash);
200: my %previous=&Apache::response::check_for_previous($responsestr,
201: $part,$id);
202: &Apache::lonxml::debug("Got $right right and $wrong wrong, and $ignored were ignored");
203: my $ad;
204: if ($wrong==0 && $ignored==0) {
205: $ad='EXACT_ANS';
206: } elsif ($wrong==0 && $right==0) {
207: #nothing submitted
208: } else {
209: if ($ignored==0) {
210: $ad='INCORRECT';
211: } else {
212: $ad='MISSING_ANSWER';
213: }
214: }
215: $Apache::lonhomework::results{"resource.$part.$id.submission"}=
216: $responsestr;
217: $Apache::lonhomework::results{"resource.$part.$id.awarddetail"}=
218: $ad;
219: &Apache::response::handle_previous(\%previous,$ad);
220: }
221: }
222: } elsif ($target eq 'edit') {
223: $result.=&Apache::edit::end_table();
224: }
225: if ($target eq 'tex') {$result .= '\end{enumerate}';}
226: return $result;
227: }
228:
229: sub getfoilcounts {
230: my ($max)=@_;
231: # +1 since instructors will count from 1
232: my $count = $#{ $Apache::response::foilgroup{'names'} }+1;
233: if (&Apache::response::showallfoils()) { $max=$count; }
234: if ($count>$max) { $count=$max }
235: &Apache::lonxml::debug("Count is $count from $max");
236: return $count;
237: }
238:
239: sub whichfoils {
240: my ($max,$randomize)=@_;
241: $max = &getfoilcounts($max);
242: &Apache::lonxml::debug("randomize $randomize");
243: my @names = @{ $Apache::response::foilgroup{'names'} };
244: my @whichopt =();
245: my (%top,@toplist,%bottom,@bottomlist);
246: if (!(&Apache::response::showallfoils() || ($randomize eq 'no'))) {
247: my $current=0;
248: foreach my $name (@names) {
249: $current++;
250: if ($Apache::response::foilgroup{$name.'.location'} eq 'top') {
251: $top{$name}=$current;
252: } elsif ($Apache::response::foilgroup{$name.'.location'} eq
253: 'bottom') {
254: $bottom{$name}=$current;
255: }
256: }
257: }
258: while ((($#whichopt+1) < $max) && ($#names > -1)) {
259: &Apache::lonxml::debug("Have $#whichopt max is $max");
260: my $aopt;
261: if (&Apache::response::showallfoils() || ($randomize eq 'no')) {
262: $aopt=0;
263: } else {
264: $aopt=int(&Math::Random::random_uniform() * ($#names+1));
265: }
266: &Apache::lonxml::debug("From $#whichopt $max $#names elms, picking $aopt");
267: $aopt=splice(@names,$aopt,1);
268: &Apache::lonxml::debug("Picked $aopt");
269: if ($top{$aopt}) {
270: $toplist[$top{$aopt}]=$aopt;
271: } elsif ($bottom{$aopt}) {
272: $bottomlist[$bottom{$aopt}]=$aopt;
273: } else {
274: push (@whichopt,$aopt);
275: }
276: }
277: for (my $i=0;$i<=$#toplist;$i++) {
278: if ($toplist[$i]) { unshift(@whichopt,$toplist[$i]) }
279: }
280: for (my $i=0;$i<=$#bottomlist;$i++) {
281: if ($bottomlist[$i]) { push(@whichopt,$bottomlist[$i]) }
282: }
283:
284: return @whichopt;
285: }
286:
287: sub displayanswers {
288: my ($max,$randomize,@opt)=@_;
289: my @names = @{ $Apache::response::foilgroup{'names'} };
290: my @whichopt = &whichfoils($max,$randomize);
291: my $result=&Apache::response::answer_header('optionresponse');
292: foreach my $name (@whichopt) {
293: $result.=&Apache::response::answer_part('optionresponse',
294: $Apache::response::foilgroup{$name.'.value'})
295: }
296: $result.=&Apache::response::answer_footer('optionresponse');
297: return $result;
298: }
299:
300: sub displayfoils {
301: my ($target,$max,$randomize,@opt)=@_;
302: my @names = @{ $Apache::response::foilgroup{'names'} };
303: my @truelist;
304: my @falselist;
305: my $result;
306: my $name;
307: my $displayoptionintex=0;
308: my @alphabet = ('A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P',
309: 'Q','R','S','T','U','V','W','X','Y','Z');
310: my @whichopt = &whichfoils($max,$randomize);
311: my $part=$Apache::inputtags::part;
312: my $id=$Apache::inputtags::response[-1];
313: if (($Apache::lonhomework::history{"resource.$part.solved"} =~ /^correct/) || ($Apache::inputtags::status[-1] eq 'SHOW_ANSWER')) {
314: foreach $name (@whichopt) {
315: if ($target eq 'web') {
316: $result.="<br />";
317: } elsif ($target eq 'tex') {
318: $result.='\vskip 0 mm ';
319: }
320: if ($target ne 'tex') {
321: $result .=$Apache::response::foilgroup{$name.'.value'}.
322: ":".$Apache::response::foilgroup{$name.'.text'}."\n";
323: } else {
324: $result .='\item '.$Apache::response::foilgroup{$name.'.value'}.
325: ":".$Apache::response::foilgroup{$name.'.text'}."\n";
326: }
327: }
328: } else {
329: my $temp=1;
330: my %lastresponse=&Apache::lonnet::str2hash($Apache::lonhomework::history{"resource.$part.$id.submission"});
331: foreach $name (@whichopt) {
332: my $lastopt=$lastresponse{$name};
333: my $optionlist="<option></option>\n";
334: my $option;
335: foreach $option (@opt) {
336: if ($option eq $lastopt) {
337: $optionlist.="<option selected=\"on\">$option</option>\n";
338: } else {
339: $optionlist.="<option>$option</option>\n";
340: }
341: }
342: if ($target ne 'tex') {
343: $result.="<br /><select name=\"HWVAL_$Apache::inputtags::response['-1']:$temp\">"
344: .$optionlist
345: ."</select>\n".$Apache::response::foilgroup{$name.'.text'}."\n";
346: if ($Apache::lonhomework::type eq 'exam') {
347: my $number_of_bubbles = $#opt + 1;
348: $result.= '<table border="1"><tr>';
349: for (my $ind=0;$ind<$number_of_bubbles;$ind++) {
350: $result.='<td>'.$alphabet[$ind].': '.$opt[$ind].'</td>';
351: }
352: $result.='</tr></table>';
353: }
354: $temp++;
355: } else {
356: if ($displayoptionintex == 0) {
357: my $texoptionlist = &optionlist_correction($optionlist);
358: if ($Apache::response::foilgroup{$name.'.text'}=~m/\\item /) {
359: $result.= $texoptionlist.$Apache::response::foilgroup{$name.'.text'};
360: } else {
361: $result.= $texoptionlist.'\item '.$Apache::response::foilgroup{$name.'.text'};
362: }
363: if ($Apache::lonhomework::type eq 'exam') {
364: $result.=&bubbles(\@alphabet,\@opt);
365: }
366: $displayoptionintex=1;
367: } else {
368: if ($Apache::response::foilgroup{$name.'.text'}=~m/\\item /) {
369: $result.= $Apache::response::foilgroup{$name.'.text'};
370: } else {
371: $result.= '\item '.$Apache::response::foilgroup{$name.'.text'};
372: }
373: if ($Apache::lonhomework::type eq 'exam') {
374: $result.=&bubbles(\@alphabet,\@opt);
375: }
376: }
377: }
378: }
379: }
380: if ($target ne 'tex') {
381: return $result."<br />";
382: }
383: else {
384: return $result;
385: }
386: }
387:
388:
389: sub optionlist_correction {
390:
391: my $texoptionlist = shift;
392: $texoptionlist =~ s/<option><\/option>/\\item \[\] The possible answers are:/;
393: $texoptionlist =~ s/<option>/\{\\bf /g;
394: $texoptionlist =~ s/<option selected="on">/\{\\bf /g;
395: $texoptionlist =~ s/<\/option>/\},/g;
396: $texoptionlist =~ s/,$/\./g;
397: $texoptionlist =~ s/>/\$>\$/g;
398: $texoptionlist =~ s/</\$<\$/g;
399: $texoptionlist =~ s/=/\$=\$/g;
400: return $texoptionlist;
401: }
402:
403:
404: sub bubbles {
405:
406: my ($ralphabit,$ropt) = @_;
407: my @alphabet = @$ralphabit;
408: my @opt = @$ropt;
409: my $result='';
410: my $number_of_bubbles = $#opt + 1;
411: $result.= '\vskip 2 mm \noindent \begin{tabular}{|';
412: for (my $ind=0;$ind<$number_of_bubbles;$ind++) {
413: $result.='lr|';
414: }
415: $result.='}\hline ';
416: for (my $ind=0;$ind<$number_of_bubbles;$ind++) {
417: $result.=' '.$alphabet[$ind].': & '.$opt[$ind].' ';
418: if ($ind != $number_of_bubbles - 1) {$result.=' & ';}
419: }
420: $result.='\\\\\hline\end{tabular}\vskip 0 mm ';
421: return $result;
422: }
423:
424:
425: sub start_conceptgroup {
426: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
427: $Apache::optionresponse::conceptgroup=1;
428: %Apache::response::conceptgroup=();
429: my $result;
430: if ($target eq 'edit') {
431: $result.=&Apache::edit::tag_start($target,$token,"Concept Grouped Foils");
432: $result.=&Apache::edit::text_arg('Concept:','concept',$token,'50').
433: &Apache::edit::end_row().&Apache::edit::start_spanning_row();
434: }
435: if ($target eq 'modified') {
436: my $constructtag=&Apache::edit::get_new_args($token,$parstack,$safeeval,'concept');
437: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
438: }
439: return $result;
440: }
441:
442: sub end_conceptgroup {
443: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
444: $Apache::optionresponse::conceptgroup=0;
445: my $result='';
446: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer'
447: || $target eq 'tex' || $target eq 'analyze') {
448: #if not there aren't any foils to display and thus no question
449: if (defined(@{ $Apache::response::conceptgroup{'names'} })) {
450: my @names = @{ $Apache::response::conceptgroup{'names'} };
451: my $pick=int(&Math::Random::random_uniform() * ($#names+1));
452: my $name=$names[$pick];
453: push @{ $Apache::response::foilgroup{'names'} }, $name;
454: $Apache::response::foilgroup{"$name.value"} =
455: $Apache::response::conceptgroup{"$name.value"};
456: $Apache::response::foilgroup{"$name.text"} =
457: $Apache::response::conceptgroup{"$name.text"};
458: $Apache::response::foilgroup{"$name.location"} =
459: $Apache::response::conceptgroup{"$name.location"};
460: my $concept = &Apache::lonxml::get_param('concept',$parstack,$safeeval);
461: $Apache::response::foilgroup{"$name.concept"} = $concept;
462: &Apache::lonxml::debug("Selecting $name in $concept");
463: if ($target eq 'analyze') {
464: my $part_id="$Apache::inputtags::part.$Apache::inputtags::response[-1]";
465: push (@{ $Apache::lonhomework::analyze{"$part_id.concepts"} },
466: $concept);
467: $Apache::lonhomework::analyze{"$part_id.concept.$concept"}=
468: $Apache::response::conceptgroup{'names'};
469: foreach my $name (@{ $Apache::response::conceptgroup{'names'} }) {
470: push (@{ $Apache::lonhomework::analyze{"$part_id.foils"} },
471: $name);
472: $Apache::lonhomework::analyze{"$part_id.foil.value.$name"} =
473: $Apache::response::conceptgroup{"$name.value"};
474: $Apache::lonhomework::analyze{"$part_id.foil.text.$name"} =
475: $Apache::response::conceptgroup{"$name.text"};
476: $Apache::lonhomework::analyze{"$part_id.foil.location.$name"} =
477: $Apache::response::conceptgroup{"$name.location"};
478: }
479: }
480: }
481: } elsif ($target eq 'edit') {
482: $result=&Apache::edit::end_table();
483: }
484: return $result;
485: }
486:
487: sub insert_conceptgroup {
488: my $result="\n\t\t<conceptgroup concept=\"\">".&insert_foil()."\n\t\t</conceptgroup>\n";
489: return $result;
490: }
491:
492: sub start_foil {
493: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
494: my $result='';
495: if ($target eq 'web' || $target eq 'tex' || $target eq 'analyze' ) {
496: &Apache::lonxml::startredirection;
497: } elsif ($target eq 'edit') {
498: $result=&Apache::edit::tag_start($target,$token,"Foil");
499: my $level='-2';
500: if ($$tagstack['-2'] eq 'conceptgroup') { $level = '-3'; }
501: my @opt;
502: eval '@opt ='.&Apache::lonxml::get_param('options',$parstack,$safeeval,$level);
503: $result.=&Apache::edit::text_arg('Name:','name',$token);
504: $result.= &Apache::edit::select_or_text_arg('Correct Option:','value',
505: ['unused',(@opt)],$token,'15');
506: my $randomize=&Apache::lonxml::get_param('randomize',$parstack,
507: $safeeval,'-3');
508: if ($randomize ne 'no') {
509: $result.=&Apache::edit::select_arg('Location:','location',
510: ['random','top','bottom'],$token);
511: }
512: $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
513: } elsif ($target eq 'modified') {
514: my $constructtag=&Apache::edit::get_new_args($token,$parstack,$safeeval,
515: 'value','name','location');
516: if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
517: }
518: return $result;
519: }
520:
521: sub end_foil {
522: my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
523: my $text ='';
524: my $result = '';
525: if ($target eq 'web' || $target eq 'tex') {
526: $text=&Apache::lonxml::endredirection;
527: if ($target eq 'tex') { $text = '\item '.$text; }
528: }
529: if ($target eq 'web' || $target eq 'grade' || $target eq 'answer'
530: || $target eq 'tex' || $target eq 'analyze') {
531: my $value = &Apache::lonxml::get_param('value',$parstack,$safeeval);
532: if ($value ne 'unused') {
533: my $name = &Apache::lonxml::get_param('name',$parstack,$safeeval);
534: my $location =&Apache::lonxml::get_param('location',$parstack,$safeeval);
535: &Apache::lonxml::debug("Got a name of :$name:");
536: if (!$name) { $name=$Apache::lonxml::curdepth; }
537: &Apache::lonxml::debug("Using a name of :$name:");
538: if ( $Apache::optionresponse::conceptgroup
539: && !&Apache::response::showallfoils() ) {
540: push @{ $Apache::response::conceptgroup{'names'} }, $name;
541: $Apache::response::conceptgroup{"$name.value"} = $value;
542: $Apache::response::conceptgroup{"$name.text"} = $text;
543: $Apache::response::conceptgroup{"$name.location"} = $location;
544: } else {
545: push @{ $Apache::response::foilgroup{'names'} }, $name;
546: $Apache::response::foilgroup{"$name.value"} = $value;
547: $Apache::response::foilgroup{"$name.text"} = $text;
548: $Apache::response::foilgroup{"$name.location"} = $location;
549: }
550: }
551: }
552: if ($target eq 'edit') {
553: $result.= &Apache::edit::tag_end($target,$token,'');
554: }
555: return $result;
556: }
557:
558: sub insert_foil {
559: return '
560: <foil name="" value="unused">
561: <startouttext />
562: <endouttext />
563: </foil>';
564: }
565: 1;
566: __END__
567:
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