# The LearningOnline Network with CAPA
# rank style response
#
# $Id: rankresponse.pm,v 1.74 2018/06/07 15:58:11 raeburn Exp $
# Copyright Michigan State University Board of Trustees
#
# This file is part of the LearningOnline Network with CAPA (LON-CAPA).
#
# LON-CAPA is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# LON-CAPA is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with LON-CAPA; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#
# /home/httpd/html/adm/gpl.txt
#
# http://www.lon-capa.org/
#
package Apache::rankresponse;
use strict;
use HTML::Entities();
use Apache::optionresponse();
use Apache::lonlocal;
use Apache::lonxml;
use Apache::lonnet;
BEGIN {
&Apache::lonxml::register('Apache::rankresponse',('rankresponse'));
}
sub start_rankresponse {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
my $result;
#when in a rank response use these
&Apache::lonxml::register('Apache::rankresponse',
('foilgroup','foil','conceptgroup'));
push (@Apache::lonxml::namespace,'rankresponse');
my $id = &Apache::response::start_response($parstack,$safeeval);
%Apache::hint::rank=();
undef(%Apache::response::foilnames);
if ($target eq 'meta') {
$result=&Apache::response::meta_package_write('rankresponse');
} elsif ($target eq 'edit' ) {
$result.=&Apache::edit::start_table($token)
.'<tr><td>'.&Apache::loncommon::insert_folding_button()
.&Apache::lonxml::description($token).'</td>'
.'<td><span class="LC_nobreak">'.&mt('Delete?').' '
.&Apache::edit::deletelist($target,$token)
.'</span></td>'
.'<td> '.&Apache::edit::end_row()
.&Apache::edit::start_spanning_row();
$result.=
&Apache::edit::text_arg('Max Number Of Shown Foils:','max',$token,'4').
&Apache::edit::select_arg('Randomize Foil Order:','randomize',
['yes','no'],$token).
&Apache::edit::end_row().&Apache::edit::start_spanning_row()."\n";
} elsif ($target eq 'modified') {
my $constructtag=&Apache::edit::get_new_args($token,$parstack,
$safeeval,'max',
'randomize');
if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
} elsif ($target eq 'analyze') {
my $part_id="$Apache::inputtags::part.$id";
$Apache::lonhomework::analyze{"$part_id.type"} = 'rankresponse';
push (@{ $Apache::lonhomework::analyze{"parts"} },$part_id);
push (@{ $Apache::lonhomework::analyze{"$part_id.bubble_lines"} }, 1);
}
return $result;
}
sub end_rankresponse {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
my $result;
if ($target eq 'edit') { $result=&Apache::edit::end_table(); }
&Apache::response::end_response;
pop @Apache::lonxml::namespace;
&Apache::lonxml::deregister('Apache::rankresponse',
('foilgroup','foil','conceptgroup'));
undef(%Apache::response::foilnames);
return $result;
}
%Apache::response::foilgroup=();
sub start_foilgroup {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
my $result;
%Apache::response::foilgroup=();
$Apache::rankresponse::conceptgroup=0;
&Apache::response::pushrandomnumber(undef,$target);
return $result;
}
sub end_foilgroup {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
my $result;
if ($target eq 'grade' || $target eq 'web' || $target eq 'answer' ||
$target eq 'tex' || $target eq 'analyze') {
my $max = &Apache::lonxml::get_param('max',$parstack,$safeeval,'-2');
my $randomize = &Apache::lonxml::get_param('randomize',$parstack,
$safeeval,'-2');
my $tol = &Apache::lonxml::get_param('tol',$parstack,$safeeval,'-2');
if (!defined($tol)) { $tol=0; }
if ($target eq 'web' || $target eq 'tex') {
$result=&displayfoils($target,$max,$randomize,$tol);
$Apache::lonxml::post_evaluate=0;
} elsif ($target eq 'answer' ) {
$result=&displayanswers($max,$randomize,$tol);
} elsif ( $target eq 'grade') {
&grade_response($max,$randomize,$tol);
} elsif ( $target eq 'analyze') {
my @shown = &whichfoils($max,$randomize);
&Apache::response::analyze_store_foilgroup(\@shown,
['text','value','location']);
my $part_id=
"$Apache::inputtags::part.$Apache::inputtags::response[-1]";
$Apache::lonhomework::analyze{"$part_id.tol"}=$tol;
}
my $part = $Apache::inputtags::part;
my $id = $Apache::inputtags::response[-1];
my ($numrows,$bubbles_per_row);
if (($target eq 'tex') && ($Apache::lonhomework::type eq 'exam')) {
my (@whichfoils)=&whichfoils($max,$randomize);
($numrows,$bubbles_per_row) =
&Apache::optionresponse::getnumrows(scalar(@whichfoils));
}
if ($numrows < 1) {
$numrows = 1;
}
my $increment = &getfoilcounts($max) * $numrows;
&Apache::lonxml::increment_counter($increment,"$part.$id");
if ($target eq 'analyze') {
&Apache::lonhomework::set_bubble_lines();
}
} elsif ($target eq 'edit') {
$result=&Apache::edit::end_table();
}
&Apache::response::poprandomnumber();
return $result;
}
sub get_correct_order {
my ($tol,@foils) =@_;
my @correctorder;
my @value_names;
foreach my $name (@foils) {
my @pair=($Apache::response::foilgroup{$name.'.value'},$name);
push(@value_names,\@pair);
}
@value_names =
sort {
if (abs($a->[0] - $b->[0]) > $tol) {return ($a->[0] <=> $b->[0]);}
return 0;
} @value_names;
my @value_names_tmp=@value_names;
my $firstpair=shift(@value_names_tmp);
my $order=1;
my %order;
my $count=1;
my $lastvalue=$firstpair->[0];
$order{$firstpair->[1]}=$order;
foreach my $pair (@value_names_tmp) {
$count++;
if (abs($pair->[0]-$lastvalue) > $tol ) {
$order=$count;
}
$order{$pair->[1]}=$order;
$lastvalue=$pair->[0];
}
foreach my $name (@foils) {
push(@correctorder,$order{$name});
}
&Apache::lonhomework::showhash('b' => \@value_names);
&Apache::lonhomework::showhash('b' => \@correctorder);
return @correctorder;
}
sub displayanswers {
my ($max,$randomize,$tol,@opt)=@_;
my @names;
if (ref($Apache::response::foilgroup{'names'}) eq 'ARRAY') {
@names = @{ $Apache::response::foilgroup{'names'} };
}
return if (!@names);
my @whichfoils = &whichfoils($max,$randomize);
my @correctorder=&get_correct_order($tol,@whichfoils);
my $result;
if ($Apache::lonhomework::type eq 'exam') {
my @alphabet = ('A'..'Z');
my $i=0;
foreach my $order (@correctorder) {
$result.=&Apache::response::answer_header('rankresponse',$i++);
$result.=&Apache::response::answer_part('rankresponse',
$alphabet[$order-1]);
$result.=&Apache::response::answer_part('rankresponse',$order);
$result.=&Apache::response::answer_footer('rankresponse');
}
} else {
$result=&Apache::response::answer_header('rankresponse');
foreach my $order (@correctorder) {
$result.=&Apache::response::answer_part('rankresponse',$order);
}
$result.=&Apache::response::answer_footer('rankresponse');
}
return $result;
}
sub check_response_order {
my (%responsehash)=@_;
my @order=sort( {$a <=> $b} values(%responsehash));
my $lastvalue=0;
my $expected=1;
my $malformed=0;
foreach my $current (@order) {
&Apache::lonxml::debug("$lastvalue $expected $malformed");
if (!($current == $lastvalue || $current == $expected)) {
$malformed=1;
}
$expected++;
$lastvalue=$current;
}
return $malformed;
}
sub grade_response {
my ($max,$randomize,$tol)=@_;
my (@whichfoils)=&whichfoils($max,$randomize);
if (!&Apache::response::submitted()) { return; }
my %responsehash;
my %grade;
my ($temp,$right,$wrong,$ignored)=(1,0,0,0);
my @correctorder=&get_correct_order($tol,@whichfoils);
my ($numrows,$bubbles_per_row);
if ($Apache::lonhomework::scantronmode) {
my $numitems = scalar(@whichfoils);
($numrows,$bubbles_per_row) =
&Apache::optionresponse::getnumrows($numitems);
}
if ($numrows < 1) {
$numrows = 1;
}
foreach my $name (@whichfoils) {
my $response;
if ($numrows > 1) {
my $num = $temp;
my $totalnum;
for (my $i=0; $i<$numrows; $i++) {
my $item = &Apache::response::getresponse($num,'A is 1');
if ($item =~ /^\d+$/) {
$totalnum = $i*$bubbles_per_row + $item;
}
$num ++;
}
$response = $totalnum;
$temp += $numrows;
} else {
$response = &Apache::response::getresponse($temp,'A is 1');
$temp ++;
}
my $value=shift(@correctorder);
if ( $response =~ /[^\s]/) {
$responsehash{$name}=$response;
&Apache::lonxml::debug("submitted a $response for $value<br />\n");
if ($value eq $response) {
$grade{$name}='1'; $right++;
} else {
$grade{$name}='0'; $wrong++;
}
} else {
$ignored++;
}
}
my $malformed=&check_response_order(%responsehash);
my $part=$Apache::inputtags::part;
my $id = $Apache::inputtags::response['-1'];
my $responsestr=&Apache::lonnet::hash2str(%responsehash);
my $gradestr =&Apache::lonnet::hash2str(%grade);
my %previous=&Apache::response::check_for_previous($responsestr,
$part,$id);
&Apache::lonxml::debug("Got $right right and $wrong wrong, and $ignored were ignored and was $malformed malformed");
my $ad;
if ($malformed) {
$ad='MISORDERED_RANK';
} elsif ($wrong==0 && $ignored==0) {
$ad='EXACT_ANS';
} elsif ($wrong==0 && $right==0) {
#nothing submitted
} else {
if ($ignored==0) {
$ad='INCORRECT';
} else {
$ad='MISSING_ANSWER';
}
}
if (($ad eq 'INCORRECT' || $ad eq 'EXACT_ANS')) {
if ($Apache::lonhomework::type eq 'survey') {
$ad='SUBMITTED';
} elsif ($Apache::lonhomework::type eq 'surveycred') {
$ad='SUBMITTED_CREDIT';
} elsif ($Apache::lonhomework::type eq 'anonsurvey') {
$ad='ANONYMOUS';
} elsif ($Apache::lonhomework::type eq 'anonsurveycred') {
$ad='ANONYMOUS_CREDIT';
} else {
$Apache::lonhomework::results{"resource.$part.$id.submissiongrading"}=$gradestr;
}
} else {
$Apache::lonhomework::results{"resource.$part.$id.submissiongrading"}=$gradestr;
}
if ($Apache::lonhomework::type eq 'randomizetry') {
if ($Apache::lonhomework::type eq 'randomizetry') {
$Apache::lonhomework::results{"resource.$part.$id.foilorder"} = &Apache::lonnet::array2str(@whichfoils);
}
}
$Apache::lonhomework::results{"resource.$part.$id.submission"}=
$responsestr;
$Apache::lonhomework::results{"resource.$part.$id.awarddetail"}=$ad;
&Apache::response::handle_previous(\%previous,$ad);
}
sub format_prior_answer {
my ($mode,$answer,$other_data) = @_;
my %lastresponse=&Apache::lonnet::str2hash($answer);
my $foil_order =$other_data->[0];
my %grading =&Apache::lonnet::str2hash($other_data->[1]);
my $output;
foreach my $name (@{ $foil_order }) {
if (defined($lastresponse{$name})) {
$output .= '<tr><td>'.&HTML::Entities::encode($lastresponse{$name},'<>&"').'</td></tr>';
} else {
$output .= '<tr><td> </td></tr>';
}
}
return if (!defined($output));
$output =
'<table class="LC_prior_rank">'.$output.'</table>';
return $output;
}
sub displayfoils {
my ($target,$max,$randomize,$tol)=@_;
my $result;
my @alphabet=('A'..'Z');
my (@whichfoils)=&whichfoils($max,$randomize);
my $part=$Apache::inputtags::part;
my $solved=$Apache::lonhomework::history{"resource.$part.solved"};
my @whichopt=(1..($#whichfoils+1));
my @correctorder=&get_correct_order($tol,@whichfoils);
if ( &Apache::response::show_answer() && ($target ne 'tex')) {
foreach my $name (@whichfoils) {
my $text=$Apache::response::foilgroup{$name.'.text'};
my $value=shift(@correctorder);
if ($target eq 'web') {
$result.='<div class="LC_rankfoil"><b>'.$value.':</b> '.$text.'</div>';
} else {
$result.=' \strut\\\\\strut '.$value.':'.$text;
}
}
} else {
my $i = 0;
my $temp=1;
my $id=$Apache::inputtags::response[-1];
my $part=$Apache::inputtags::part;
my ($lastresponse,$newvariation);
if ((($Apache::lonhomework::history{"resource.$part.type"} eq 'randomizetry') ||
($Apache::lonhomework::type eq 'randomizetry')) &&
($Apache::inputtags::status[-1] eq 'CAN_ANSWER')) {
if ($env{'form.'.$part.'.rndseed'} ne
$Apache::lonhomework::history{"resource.$part.rndseed"}) {
$newvariation = 1;
}
}
unless ($newvariation) {
if ((($env{'form.grade_username'} eq '') && ($env{'form.grade_domain'} eq '')) ||
(($env{'form.grade_username'} eq $env{'user.name'}) &&
($env{'form.grade_domain'} eq $env{'user.domain'}))) {
$lastresponse=$Apache::lonhomework::history{"resource.$part.$id.submission"};
} else {
unless (($Apache::lonhomework::history{"resource.$part.type"} eq 'anonsurvey') ||
($Apache::lonhomework::history{"resource.$part.type"} eq 'anonsurveycred')) {
$lastresponse=$Apache::lonhomework::history{"resource.$part.$id.submission"};
}
}
}
my %lastresponse=&Apache::lonnet::str2hash($lastresponse);
my @alp = splice @alphabet, 0, $#whichopt + 1;
my $internal_counter=$Apache::lonxml::counter;
my ($numrows,$bubbles_per_row);
if (($target eq 'tex') && ($Apache::lonhomework::type eq 'exam')) {
($numrows,$bubbles_per_row) =
&Apache::optionresponse::getnumrows(scalar(@alp));
} else {
$numrows = 1;
}
if($target eq 'tex' && $env{'form.pdfFormFields'} eq 'yes') {
$result .= '\strut \\\\ \strut \\\\' ;
}
foreach my $name (@whichfoils) {
my $lastopt=$lastresponse{$name};
my $optionlist='';
if ($target ne 'tex') {
$optionlist = "<option value=\"\"></option>\n";
}
if ($target eq 'tex' && $env{'form.pdfFormFields'} eq 'yes') {
my $fieldname = $env{'request.symb'}.'&part_'.$Apache::inputtags::part.'&rankresponse'.'&HWVAL_'.$Apache::inputtags::response['-1'].':'.$temp;
$optionlist = &Apache::lonxml::print_pdf_start_combobox($fieldname);
}
my $option;
foreach $option (@whichopt) {
if ($option eq $lastopt) {
if ($target ne 'tex' ) {
$optionlist.="<option value=\"$option\" selected=\"selected\">$option</option>\n";
} elsif ($target eq 'tex' && $env{'form.pdfFormFields'} eq 'yes') {
$optionlist .= &Apache::lonxml::print_pdf_add_combobox_option($option);
}
} else {
if ($target ne 'tex') {
$optionlist.="<option value=\"$option\">$option</option>\n";
} elsif ($target eq 'tex' && $env{'form.pdfFormFields'} eq 'yes') {
$optionlist .= &Apache::lonxml::print_pdf_add_combobox_option($option);
}
}
}
if ($target ne 'tex' && $Apache::lonhomework::type ne 'exam') {
$optionlist='<select onchange="javascript:setSubmittedPart(\''.
$part.'\');" name="HWVAL_'.
$Apache::inputtags::response[-1].':'.$temp.'">'.
$optionlist."</select>\n";
} elsif ($env{'form.pdfFormFields'} eq 'yes') {
#do nothing
} else {
$optionlist=' '.$temp.' '.$optionlist.' ';
}
my $text=$Apache::response::foilgroup{$name.'.text'};
if ($target ne 'tex') {
$result .= '<div class="LC_rankfoil">';
if ($Apache::lonhomework::type ne 'exam') {
$result.=$optionlist.$text."\n";
} else {
$result.=$text."\n";
}
if ($Apache::lonhomework::type eq 'exam') {
my @values=(1..scalar(@whichopt));
$result.=&Apache::optionresponse::webbubbles(\@values,\@whichopt,$temp,$lastopt);
}
$result .= '</div>';
} else {
if ($Apache::lonhomework::type eq 'exam') {
my $itemlabel;
if ($numrows == 1) {
$itemlabel = '\item[\textbf{'.$internal_counter.'}]';
} else {
my $linetext;
for (my $i=0; $i<$numrows; $i++) {
$linetext .= $internal_counter+$i.', ';
}
$linetext =~ s/,\s$//;
$itemlabel = '\item[\small {\textbf{'.$linetext.'}}]'.
' {\footnotesize '.
&mt('(Bubble once in [_1] lines)',$numrows).
'} \hspace*{\fill} \\\\';
}
$result .= '\vskip 0 mm '.$text.' \vskip 0 mm '."\n";
$result .= '\vskip -1 mm';
$result .= '\begin{enumerate}'.$itemlabel;
$result .= &Apache::optionresponse::bubbles(\@alp,\@whichopt,'rankresponse',undef,$numrows,$bubbles_per_row,$internal_counter);
$result .= '\end{enumerate} \vskip -8 mm \strut ';
$internal_counter += $numrows;
} else {
if($env{'form.pdfFormFields'} ne 'yes') {
$result.=' \vskip 0mm \framebox[5 mm][s]{\tiny\strut} '.$text."\n";
} else {
$result.= $optionlist.' '. &Apache::lonxml::print_pdf_end_combobox($text).'\strut \\\\';
}
}
}
$temp++;
}
}
if ($target eq 'web') {
my $questiontype;
if ($Apache::lonhomework::type eq 'randomizetry') {
$questiontype = $Apache::lonhomework::type;
}
&Apache::response::setup_prior_tries_hash(\&format_prior_answer,
[\@whichfoils,
'submissiongrading'],
$questiontype);
}
if ($target ne 'tex') {$result.="<br />";} else {$result.=' \vskip 0 mm ';}
return $result;
}
sub getfoilcounts {
my ($max)=@_;
# +1 since instructors will count from 1
my $count = $#{ $Apache::response::foilgroup{'names'} }+1;
if (&Apache::response::showallfoils()) { $max=$count; }
if ($count>$max) { $count=$max }
&Apache::lonxml::debug("Count is $count from $max");
return $count;
}
sub whichfoils {
my ($max,$randomize)=@_;
return &Apache::response::whichorder($max,$randomize,
&Apache::response::showallfoils(),
\%Apache::response::foilgroup);
}
sub start_conceptgroup {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
$Apache::rankresponse::conceptgroup=1;
%Apache::response::conceptgroup=();
my $result;
if ($target eq 'edit') {
$result.=&Apache::edit::tag_start($target,$token,
"Concept Grouped Foils");
$result.=&Apache::edit::text_arg('Concept:','concept',$token,'50').
&Apache::edit::end_row().&Apache::edit::start_spanning_row();
}
if ($target eq 'modified') {
my $constructtag=&Apache::edit::get_new_args($token,$parstack,
$safeeval,'concept');
if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
}
return $result;
}
sub end_conceptgroup {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
$Apache::rankresponse::conceptgroup=0;
my $result='';
if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
$target eq 'tex' || $target eq 'analyze') {
#if not there aren't any foils to display and thus no question
&Apache::response::pick_foil_for_concept($target,
['value','text','location'],
\%Apache::hint::rank,
$parstack,$safeeval);
} elsif ($target eq 'edit') {
$result=&Apache::edit::end_table();
}
return $result;
}
sub insert_conceptgroup {
my $result="\n\t\t<conceptgroup concept=\"\">".&insert_foil()."\n\t\t</conceptgroup>\n";
return $result;
}
sub start_foil {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
my $result='';
if ($target eq 'web' || $target eq 'tex' || $target eq 'analyze') {
&Apache::lonxml::startredirection;
if ($target eq 'analyze') {
&Apache::response::check_if_computed($token,$parstack,$safeeval,'value');
}
} elsif ($target eq 'edit') {
$result=&Apache::edit::tag_start($target,$token,"Foil");
my $level='-2';
if ($$tagstack[-2] eq 'conceptgroup') { $level = '-3'; }
$result.=&Apache::edit::text_arg('Name:','name',$token);
$result.= &Apache::edit::text_arg('Rank Value:','value',$token,'15');
my $randomize=&Apache::lonxml::get_param('randomize',$parstack,
$safeeval,'-3');
if ($randomize ne 'no') {
$result.=&Apache::edit::select_arg('Location:','location',
['random','top','bottom'],$token);
}
$result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
} elsif ($target eq 'modified') {
my $constructtag=&Apache::edit::get_new_args($token,$parstack,
$safeeval,'value',
'name','location');
if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
}
return $result;
}
sub end_foil {
my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
my $text ='';
my $result = '';
if ($target eq 'web' || $target eq 'tex' || $target eq 'analyze') {
$text=&Apache::lonxml::endredirection;
}
if ($target eq 'web' || $target eq 'grade' || $target eq 'answer' ||
$target eq 'tex' || $target eq 'analyze') {
my $value = &Apache::lonxml::get_param('value',$parstack,$safeeval);
if ($target eq 'tex' && $Apache::lonhomework::type eq 'exam') {
$text='\vskip 5mm $\triangleright$ '.$text;
}
if ($value ne 'unused') {
my $name = &Apache::lonxml::get_param('name',$parstack,$safeeval);
&Apache::lonxml::debug("Got a name of :$name:");
if ($name eq "") {
&Apache::lonxml::warning(&mt('Foils without names exist. This can cause problems to malfunction.'));
$name=$Apache::lonxml::curdepth;
}
&Apache::lonxml::debug("Using a name of :$name:");
if (defined($Apache::response::foilnames{$name})) {
&Apache::lonxml::error(&mt('Foil name [_1] appears more than once. Foil names need to be unique.','<b><tt>'.$name.'</tt></b>'));
}
$Apache::response::foilnames{$name}++;
my $location =&Apache::lonxml::get_param('location',$parstack,
$safeeval);
if ( $Apache::rankresponse::conceptgroup
&& !&Apache::response::showallfoils() ) {
push @{ $Apache::response::conceptgroup{'names'} }, $name;
$Apache::response::conceptgroup{"$name.value"} = $value;
$Apache::response::conceptgroup{"$name.text"} = $text;
$Apache::response::conceptgroup{"$name.location"} = $location;
} else {
push @{ $Apache::response::foilgroup{'names'} }, $name;
$Apache::response::foilgroup{"$name.value"} = $value;
$Apache::response::foilgroup{"$name.text"} = $text;
$Apache::response::foilgroup{"$name.location"} = $location;
}
}
}
if ($target eq 'edit') {
$result.= &Apache::edit::tag_end($target,$token,'');
}
return $result;
}
sub insert_foil {
return '
<foil name="" value="unused">
<startouttext />
<endouttext />
</foil>';
}
1;
__END__
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