--- loncom/homework/optionresponse.pm	2001/08/06 19:00:13	1.21
+++ loncom/homework/optionresponse.pm	2012/04/18 19:45:39	1.185
@@ -1,361 +1,962 @@
-# The LON-CAPA option response handler
+# LearningOnline Network with CAPA
+# option list style responses
 #
-# Option list style responses
+# $Id: optionresponse.pm,v 1.185 2012/04/18 19:45:39 raeburn Exp $
 #
-# YEAR=2001
-# 1/19,2/7,2/19,2/21,2/22,3/1,5/4,5/21,5/31,6/1,6/2,6/5,6/11 Guy Albertelli
-# 6/12,6/16,6/26,6/27,7/18 Guy Albertelli
-# 8/6 Scott Harrison
+# 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::optionresponse;
 use strict;
-use Apache::response;
+use Apache::response();
+use Apache::lonlocal;
+use Apache::lonnet;
 
-# ======================================================================= BEGIN
-sub BEGIN {
+BEGIN {
   &Apache::lonxml::register('Apache::optionresponse',('optionresponse'));
 }
 
-# ================================ Start option response (return scalar string)
 sub start_optionresponse {
-    my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
-    my $result = '';
-    #when in a radiobutton response use these
-    &Apache::lonxml::register('Apache::optionresponse',('foilgroup','foil',
-							'conceptgroup'));
-    push (@Apache::lonxml::namespace,'optionresponse');
-    my $id = &Apache::response::start_response($parstack,$safeeval);
-    if ($target eq 'edit') {
-	$result .= &Apache::edit::start_table($token).
-	           "<tr><td>Multiple Option Response Question</td><td>Delete:".
-		   &Apache::edit::deletelist($target,$token).
-		   "</td><td>&nbsp;</td></tr><tr><td colspan=\"3\">\n";
-	$result .= &Apache::edit::text_arg('Max Number Of Foils:','max',
-					   $token,'4')."</td></tr>";
-	$result .= "<tr><td colspan=\"3\">\n";
-    }
-    if ($target eq 'modified') {
-	my $constructtag = &Apache::edit::get_new_args($token,$parstack,
-						       $safeeval,'max');
-	if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
-    }
-    return $result;
+  my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
+  my $result='';
+  #when in a option response use these
+  &Apache::lonxml::register('Apache::optionresponse',('foilgroup','foil','conceptgroup','drawoptionlist'));
+  push (@Apache::lonxml::namespace,'optionresponse');
+  my $id = &Apache::response::start_response($parstack,$safeeval);
+  %Apache::hint::option=();
+  undef(%Apache::response::foilnames);
+  if ($target eq 'edit') {
+    $result.=&Apache::edit::start_table($token)
+       .'<tr><td><span class="LC_nobreak">'.&mt('Multiple Option Response Question').'</span> '
+       .&Apache::loncommon::help_open_topic('Option_Response_Problems')."</td>"
+       .'<td><span class="LC_nobreak">'.&mt('Delete?').' '
+       .&Apache::edit::deletelist($target,$token)
+       .'</span></td>'
+       ."<td>&nbsp;"
+       .&Apache::edit::end_row()
+       .&Apache::edit::start_spanning_row()
+       ."\n";
+    $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::select_arg(&mt('Display of options when printed'),'TeXlayout',
+				  [['horizontal','Normal list'],
+				   ['vertical','Listed in a vertical column']],$token).
+        &Apache::edit::end_row().&Apache::edit::start_spanning_row();
+  } elsif ($target eq 'modified') {
+    my $constructtag=&Apache::edit::get_new_args($token,$parstack,
+						 $safeeval,'max','randomize',
+						 'TeXlayout');
+    if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
+  } elsif ($target eq 'meta') {
+    $result=&Apache::response::meta_package_write('optionresponse');
+  } elsif ($target eq 'analyze') {
+    my $part_id="$Apache::inputtags::part.$id";
+    $Apache::lonhomework::analyze{"$part_id.type"} = 'optionresponse';
+    push (@{ $Apache::lonhomework::analyze{"parts"} },$part_id);
+    push (@{ $Apache::lonhomework::analyze{"$part_id.bubble_lines"} }, 1);
+
+  }
+  return $result;
 }
 
-# ================================== End option response (return scalar string)
 sub end_optionresponse {
-    my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
-    &Apache::response::end_response;
-    pop @Apache::lonxml::namespace;
-    my $result;
-    if ($target eq 'edit') { $result = &Apache::edit::end_table(); }
-    return $result;
+  my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
+  &Apache::response::end_response;
+  pop @Apache::lonxml::namespace;
+  &Apache::lonxml::deregister('Apache::optionresponse',('foilgroup','foil','conceptgroup','drawoptionlist'));
+  my $result;
+  if ($target eq 'edit') { $result=&Apache::edit::end_table(); }
+  undef(%Apache::response::foilnames);
+  return $result;
 }
 
-# ===================================== Start foil group (return scalar string)
-%Apache::response::foilgroup = {};
+%Apache::response::foilgroup=();
 sub start_foilgroup {
-    my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
-    my $result = '';
-    %Apache::response::foilgroup = {};
-    $Apache::optionresponse::conceptgroup = 0;
-    &Apache::response::setrandomnumber();
-    if ($target eq 'edit') {
-	my $optionlist = "<option></option>\n";
-	my $option;
-	my @opt;
-	eval '@opt ='.
-	    &Apache::lonxml::get_param('options',$parstack,$safeeval);
-	my $count = 1;
-	foreach $option (@opt) {
-	    $optionlist .= "<option value=\"$count\">$option</option>\n";
-	    $count++;
-	}
-	my $insertlist = &Apache::edit::insertlist($target,$token);
-	$result .= &Apache::edit::start_table($token);
-	$result .= (<<ENDTABLE);
-     <tr><td>Select Options</td>
+  my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
+
+  my $result='';
+  %Apache::response::foilgroup=();
+  $Apache::optionresponse::conceptgroup=0;
+  &Apache::response::pushrandomnumber(undef,$target);
+  if ($target eq 'edit') {
+    my $optionlist="<option></option>\n";
+    my $option;
+    my @opt;
+    eval '@opt ='. &Apache::lonxml::get_param('options',$parstack,$safeeval);
+    my $count=1;
+    foreach $option (@opt) {
+      $optionlist.="<option value=\"$count\">$option</option>\n";
+      $count++;
+    }
+    my $insertlist=&Apache::edit::insertlist($target,$token);
+    $result.=&Apache::edit::start_table($token);
+    $result.= (<<ENDTABLE);
+      <tr><td>Select Options</td>
         <td>
 	  Add new Option: <input type="text" name="$Apache::lonxml::curdepth.options" />
         </td>
         <td>Delete an Option:
 	  <select name="$Apache::lonxml::curdepth.deleteopt">$optionlist</select>
         </td>
-     </tr>
-     <tr><td colspan="3">$insertlist<br />
 ENDTABLE
+    $result.= '<td>'.&Apache::edit::checked_arg('Print options:','texoptions',
+					 [ ['nochoice','Don\'t show option list'] ]
+					 ,$token).'</td>';
+    $result.= '<td><label>'.&mt('Two-option checkboxes for:').
+              '<select name="checkboxvalue_'.$Apache::lonxml::curdepth.'">';
+    foreach $option (('',@opt)) {
+       $result.='<option value="'.$option.'"';
+       if ($option eq &Apache::lonxml::get_param('checkboxvalue',$parstack,$safeeval)) {
+          $result.=' selected="selected"';
+       }
+       $result.='>'.$option.'</option>';
     }
-    if ($target eq 'modified') {
-	my @options;
-	my $optchanged=0;
-	eval '@options ='.
-	    &Apache::lonxml::get_param('options',$parstack,$safeeval);
-	if ($ENV{"form.$Apache::lonxml::curdepth.deleteopt"}) {
-	    my $delopt=$ENV{"form.$Apache::lonxml::curdepth.deleteopt"};
-	    &Apache::lonxml::debug("Deleting :$delopt:");
-	    splice(@options,$delopt-1,1);
-	    $optchanged = 1;
-	}
-	if ($ENV{"form.$Apache::lonxml::curdepth.options"}) {
-	    my $newopt = $ENV{"form.$Apache::lonxml::curdepth.options"};
-	    if ($options[0]) {
-		push(@options,$newopt);
-	    } else {
-		$options[0] = $newopt;
-	    }
-	    $optchanged = 1;
-	}
-	if ($optchanged) {
-	    $result = "<foilgroup options=\"(";
-	    foreach my $option (@options) {
-		$option =~ s/\'/\\\'/;
-		&Apache::lonxml::debug("adding option :$option:");
-		$result .= "'".$option."',";
-	    }
-	    chop $result;
-	    $result .= ')">';
-	} # else nothing changed so just use the default mechanism
+    $result.='</select></label>';
+    $result.=&Apache::edit::checked_arg('Checkbox options:','checkboxoptions',
+                                         [ ['nochoice','Don\'t show option list'] ]
+                                         ,$token).'</td>';
+    $result.= &Apache::edit::end_row();
+    $result.= &Apache::edit::start_spanning_row();
+    $result.= $insertlist.'<br />';
+  }
+  if ($target eq 'modified') {
+    my @options;
+    my $optchanged=0;
+    eval '@options ='.&Apache::lonxml::get_param('options',$parstack,$safeeval);
+    if ($env{"form.$Apache::lonxml::curdepth.deleteopt"}) {
+      my $delopt=$env{"form.$Apache::lonxml::curdepth.deleteopt"};
+      &Apache::lonxml::debug("Deleting :$delopt:");
+      splice(@options,$delopt-1,1);
+      $optchanged=1;
     }
-    return $result;
+    if ($env{"form.$Apache::lonxml::curdepth.options"} ne '') {
+      my $newopt = $env{"form.$Apache::lonxml::curdepth.options"};
+      push(@options,$newopt);
+      $optchanged=1;
+    }
+    my $rebuildtag = &Apache::edit::get_new_args($token,$parstack,$safeeval,
+						 'texoptions','checkboxvalue','checkboxoptions');
+    if ($optchanged || $rebuildtag ) {
+      $result = "<foilgroup options=\"(";
+      foreach my $option (@options) {
+	$option=~s/\'/\\\'/g;
+	&Apache::lonxml::debug("adding option :$option:");
+	$result .="'".$option."',";
+      }
+      chop $result;
+      $result.=')" ';
+      $result .= 'texoptions="'.$token->[2]{'texoptions'}.'" ';
+      $result .= 'checkboxoptions="'.$token->[2]{'checkboxoptions'}.'" ';
+      $result .= 'checkboxvalue="'.$token->[2]{'checkboxvalue'}.'"';
+      $result .= '>';
+    } # else nothing changed so just use the default mechanism
+  }
+  if ($target eq 'tex' and $Apache::lonhomework::type ne 'exam') {
+    if($env{'form.pdfFormFields'} ne 'yes') {
+      $result .= ' \begin{itemize} ';
+    } else {
+      $result .= "\\\\";
+    }
+  }
+  return $result;
 }
 
-# ======================================= End foil group (return scalar string)
 sub end_foilgroup {
-    my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
-    my $result;
-    if ($target eq 'grade' || $target eq 'web') {
-	my $name;
-	my ($count,$max) = &getfoilcounts($parstack,$safeeval);
-	if ($count>$max) { $count = $max } 
-	&Apache::lonxml::debug("Count is $count from $max");
-	my @opt;
-	eval '@opt ='.
-	    &Apache::lonxml::get_param('options',$parstack,$safeeval);
-	&Apache::lonxml::debug("Options are $#opt");
-	if ($target eq 'web') {
-	    $result=&displayfoils($count,@opt);
-	} elsif ( $target eq 'grade') {
-	    if ( defined $ENV{'form.submitted'}) {
-		my @whichopt = &whichfoils($count);
-		my $temp=1;my $name;
-		my $allresponse;
-		my $right=0;
-		my $wrong=0;
-		my $ignored=0;
-		foreach $name (@whichopt) {
-		    my $response = $ENV{'form.HWVAL_'.
-					$Apache::inputtags::response['-1'].
-					":$temp"};
-		    $allresponse .= "$response:";
-		    if ( $response =~ /[^\s]/) {
-			&Apache::lonxml::debug("submitted a $response".
-					       "<br />\n");
-			my $value = $Apache::response::foilgroup{$name.
-								     '.value'};
-			if ($value eq $response) {$right++;} else {$wrong++;}
-		    } else {
-			$ignored++;
-		    }
-		    $temp++;
-		}
-		my $id = $Apache::inputtags::response['-1'];
-		$Apache::lonhomework::results{"resource.".
- 	            $Apache::inputtags::part.".$id.submission"} = $allresponse;
-		&Apache::lonxml::debug("Got $right right and $wrong wrong, ".
-				       "and $ignored were ignored");
-		if ($wrong==0 && $ignored==0) {
-		    $Apache::lonhomework::results{"resource.".
-				   $Apache::inputtags::part.".$id.awarddetail"}
- 		                                                 = 'EXACT_ANS';
+  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 $tex_option_switch=&Apache::lonxml::get_param('texoptions',$parstack,$safeeval);
+    my $name;
+    my @opt;
+    eval '@opt ='.&Apache::lonxml::get_param('options',$parstack,$safeeval);
+    &Apache::lonxml::debug("options:".join(':',@opt));
+
+    my $TeXlayout=&Apache::lonxml::get_param('TeXlayout',$parstack,$safeeval,
+					     -2,0);
+    my $checkboxvalue=&Apache::lonxml::get_param('checkboxvalue',$parstack,$safeeval);
+    my $checkboxchoices=(&Apache::lonxml::get_param('checkboxoptions',$parstack,$safeeval) ne 'nochoice');
+    if ($target eq 'tex' && $tex_option_switch eq 'nochoice') {@opt=();}
+    &Apache::lonxml::debug("Options are $#opt");
+    my $max = &Apache::lonxml::get_param('max',$parstack,$safeeval,'-2');
+    my $randomize = &Apache::lonxml::get_param('randomize',$parstack,
+					       $safeeval,'-2');
+    if ($target eq 'web' || $target eq 'tex') {
+      $result.=&displayfoils($target,$max,$randomize,$TeXlayout,$checkboxvalue,$checkboxchoices,$tex_option_switch,@opt);
+      $Apache::lonxml::post_evaluate=0;
+    } elsif ( $target eq 'answer') {
+      $result.=&displayanswers($max,$randomize,@opt);
+      
+    } 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]";
+	push (@{ $Apache::lonhomework::analyze{"$part_id.options"} },@opt);
+    } elsif ( $target eq 'grade') {
+
+      if ( &Apache::response::submitted()) {
+
+	my @whichopt = &whichfoils($max,$randomize);
+	my $temp=1;my $name;
+	my %responsehash;
+	my %grade;
+	my $right=0;
+	my $wrong=0;
+	my $ignored=0;
+        my ($numrows,$bubbles_per_row);
+        if ($Apache::lonhomework::scantronmode) {
+            my $numitems = scalar(@opt);
+            ($numrows,$bubbles_per_row) =
+                &Apache::optionresponse::getnumrows($numitems);
+        }
+        if ($numrows < 1) {
+            $numrows = 1;
+        }
+	foreach $name (@whichopt) {
+	  my $response;
+          if ($env{'form.submitted'} eq 'scantron') {
+              if ($numrows > 1) {
+                  my $num = $temp;
+                  my $totalnum;
+                  for (my $i=0; $i<$numrows; $i++) {
+                      my $item = &Apache::response::getresponse($num);
+                      if ($item =~ /^\d+$/) {
+                          $totalnum = $i*$bubbles_per_row + $item;
+                      }
+                      $num ++;
+                  }
+                  if ($totalnum =~ /^\d+$/) {
+                      $response = $opt[$totalnum];
+                  }
+                  $temp += $numrows;
+              } else {
+                  $response=&Apache::response::getresponse($temp);
+                  if ($response=~/\S/) {
+                      $response = $opt[$response];
+                  }
+                  $temp ++;
+              }
+	  } else {
+              $response=&Apache::response::getresponse($temp);
+              $temp ++;
+          }
+	  if ( $response =~ /[^\s]/) {
+	    $responsehash{$name}=$response;
+	    my $value=$Apache::response::foilgroup{$name.'.value'};
+	    &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 $part=$Apache::inputtags::part;
+        my $nonlenient=&grading_is_nonlenient($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");
+	$Apache::lonhomework::results{"resource.$part.$id.submission"}=
+	    $responsestr;
+	$Apache::lonhomework::results{"resource.$part.$id.submissiongrading"}=$gradestr;
+        if ($Apache::lonhomework::type eq 'randomizetry') {
+            $Apache::lonhomework::results{"resource.$part.$id.foilorder"} = &Apache::lonnet::array2str(@whichopt);
+        }
+	if (($Apache::lonhomework::type eq 'survey') ||
+            ($Apache::lonhomework::type eq 'surveycred') ||
+            ($Apache::lonhomework::type eq 'anonsurvey') ||
+            ($Apache::lonhomework::type eq 'anonsurveycred')) {
+	    if ($ignored == 0) {
+                my $ad;
+                if ($Apache::lonhomework::type eq 'anonsurveycred') {
+                    $ad=$Apache::lonhomework::results{"resource.$part.$id.awarddetail"}='ANONYMOUS_CREDIT';
+                } elsif ($Apache::lonhomework::type eq 'anonsurvey') {
+                    $ad=$Apache::lonhomework::results{"resource.$part.$id.awarddetail"}='ANONYMOUS';
+                } elsif ($Apache::lonhomework::type eq 'surveycred') {
+                    $ad=$Apache::lonhomework::results{"resource.$part.$id.awarddetail"}='SUBMITTED_CREDIT';
+                } else {
+		    $ad=$Apache::lonhomework::results{"resource.$part.$id.awarddetail"}='SUBMITTED';
+                }
+		&Apache::response::handle_previous(\%previous,$ad);
+	    } elsif ($wrong==0 && $right==0) {
+	    } else {
+		my $ad=$Apache::lonhomework::results{"resource.$part.$id.awarddetail"}='MISSING_ANSWER';
+		&Apache::response::handle_previous(\%previous,$ad);
+	    }
+	} elsif ($nonlenient) {
+#
+# Non-lenient mode. All right or all wrong
+#
+	    my $ad;
+	    if ($wrong==0 && $ignored==0) {
+		$ad='EXACT_ANS';
+	    } elsif ($wrong==0 && $right==0) {
+		#nothing submitted
+	    } else {
+		if ($ignored==0) {
+		    $ad='INCORRECT';
 		} else {
-		    $Apache::lonhomework::results{"resource.".
-				   $Apache::inputtags::part.".$id.awarddetail"}
-		                                                 = 'INCORRECT';
+		    $ad='MISSING_ANSWER';
 		}
 	    }
+	    $Apache::lonhomework::results{"resource.$part.$id.awarddetail"}=$ad;
+	    &Apache::response::handle_previous(\%previous,$ad);
+	} else {
+#
+# This is lenient mode
+#
+	    my $ad;
+	    if ($wrong==0 && $right==0) {
+		#nothing submitted only assign a score if we 
+		#need to override a previous grade
+		if (defined($Apache::lonhomework::history{"resource.$part.$id.awarddetail"})) {
+		    $ad='ASSIGNED_SCORE';
+		}
+	    } else {
+		$ad='ASSIGNED_SCORE';
+	    }
+	    $Apache::lonhomework::results{"resource.$part.$id.awarddetail"}=$ad;
+	    $Apache::lonhomework::results{"resource.$part.$id.awarded"}=
+		$right/(scalar(@whichopt));
+	    $Apache::lonhomework::results{"resource.$part.$id.numfoils"}=
+		scalar(@whichopt);
 	}
+      }
     }
-    if ($target eq 'edit') {
-	$result .= &Apache::edit::end_table();
+    my $part_id     = $Apache::inputtags::part;
+    my $response_id = $Apache::inputtags::response[-1];
+    my ($numrows,$bubbles_per_row);
+    if (($target eq 'tex') && ($Apache::lonhomework::type eq 'exam')) {
+        ($numrows,$bubbles_per_row) =
+            &Apache::optionresponse::getnumrows(scalar(@opt));
     }
-    return $result;
+    if ($numrows < 1) {
+        $numrows = 1;
+    }
+    my $increment = &getfoilcounts($max) * $numrows;
+    &Apache::lonxml::increment_counter($increment,"$part_id.$response_id");
+    if ($target eq 'analyze') {
+	&Apache::lonhomework::set_bubble_lines();
+    }
+
+  } elsif ($target eq 'edit') {
+    $result.=&Apache::edit::end_table();
+  }
+  if ($target eq 'tex' and $Apache::lonhomework::type ne 'exam') {
+    if($env{'form.pdfFormFields'} ne 'yes') {
+      $result .= '\end{itemize}'; 
+    } else {
+      $result .= "\\\\";
+    }
+  }
+  &Apache::response::poprandomnumber();
+  return $result;
+}
+
+sub grading_is_nonlenient {
+    my ($part) = @_;
+# Web mode: we are non-lenient unless told otherwise
+    my $defaultparm = 'off';
+    my $nonlenient = 0;
+# Grading a bubblesheet exam: we are grading lenient unless told otherwise
+    if ($Apache::lonhomework::scantronmode) {
+        $defaultparm = 'on';
+        $nonlenient = 1;
+    }
+    my $lenientparm =
+        &Apache::response::get_response_param($part,'lenient',$defaultparm);
+    if ($lenientparm=~/^0|off|no$/i) {
+        $nonlenient = 1;
+    } elsif ($lenientparm=~/^1|on|yes$/i) {
+        $nonlenient = 0;
+    }
+    return $nonlenient;
 }
 
-# ==================================== Get foil counts (return 2 element array)
 sub getfoilcounts {
-    my ($parstack,$safeeval) = @_;
-    my $max = &Apache::lonxml::get_param('max',$parstack,$safeeval,'-2');
-    # +1 since instructors will count from 1
-    my $count = $#{ $Apache::response::foilgroup{'names'} }+1;
-    return ($count,$max);
+  my ($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;
 }
 
-# =============================================== Which foils (return an array)
 sub whichfoils {
-    my ($max)=@_;
+    my ($max,$randomize)=@_;
+    return &Apache::response::whichorder($max,$randomize,
+					 &Apache::response::showallfoils(),
+					 \%Apache::response::foilgroup);
+}
+
+sub displayanswers {
+    my ($max,$randomize,@opt)=@_;
+    if (!defined(@{ $Apache::response::foilgroup{'names'} })) {return;}
     my @names = @{ $Apache::response::foilgroup{'names'} };
-    my @whichopt =();
-    while ((($#whichopt+1) < $max) && ($#names > -1)) {
-	&Apache::lonxml::debug("Have $#whichopt max is $max");
-	my $aopt=int(rand($#names+1));
-	&Apache::lonxml::debug("From $#whichopt $max $#names elms, picking ".
-			       $aopt);
-	$aopt=splice(@names,$aopt,1);
-	&Apache::lonxml::debug("Picked $aopt");
-	push (@whichopt,$aopt);
+    my @whichopt = &whichfoils($max,$randomize);
+    my $result;
+    if ($Apache::lonhomework::type eq 'exam') {
+	my $i = 0;
+	my %opt = map { ($_,$i++) } @opt;
+	
+	$i = 0;
+	my @alphabet = ('A'..'Z');
+	foreach my $name (@whichopt) {
+	    $result.=&Apache::response::answer_header('optionresponse',$i++);
+	    $result.=&Apache::response::answer_part('optionresponse',
+						    $alphabet[$opt{$Apache::response::foilgroup{$name.'.value'}}]);
+	    $result.=&Apache::response::answer_part('optionresponse',
+						    $Apache::response::foilgroup{$name.'.value'});
+	    $result.=&Apache::response::answer_footer('optionresponse');
+	}
+    } else {
+	$result=&Apache::response::answer_header('optionresponse');
+	foreach my $name (@whichopt) {
+	    $result.=&Apache::response::answer_part('optionresponse',
+						    $Apache::response::foilgroup{$name.'.value'});
+	}
+	$result.=&Apache::response::answer_footer('optionresponse');
+    }
+    return $result;
+}
+
+sub check_box_opt {
+    my ($target,$checkboxvalue,@opt)=@_;
+# Check if we are in checkbox mode: checkboxvalue specified, on web, only two options.
+# If so, return "checked" value
+    if ($#opt!=1) { return ''; }
+    if ($target ne 'web') { return ''; }
+    return $checkboxvalue;
+}
+
+sub check_for_invalid {
+    my ($names,$options) = @_;
+    my %bad_names;
+    foreach my $name (@{ $names }) {
+	my $value=$Apache::response::foilgroup{$name.'.value'};
+	my $found=0;
+	foreach my $option (@{ $options }) {
+	    if ($value eq $option) { $found=1; }
+	}
+	if (!$found) { $bad_names{$name}=$value; }
+    }
+    if (%bad_names) {
+	my $error=&mt('The question can not be gotten correct, '.
+	    'the following foils in the &lt;optionresponse&gt; '.
+	    'have invalid correct options').' <br /><tt>'.
+	    join('<br />',(map { $_=&mt("[_1] with value [_2]",$_,$bad_names{$_}) } (keys(%bad_names)))).
+	    "</tt>";
+	&Apache::lonxml::error($error);
     }
-    return @whichopt;
 }
 
-# ======================================== Display foils (return scalar string)
 sub displayfoils {
-    my ($max,@opt) = @_;
-    my @names = @{ $Apache::response::foilgroup{'names'} };
-    my @truelist;
-    my @falselist;
-    my $result;
-    my $name;
-    my @whichopt = &whichfoils($max);
-    my $optionlist = "<option></option>\n";
-    my $option;
-    foreach $option (@opt) {
-	$optionlist .= "<option>$option</option>\n";
+  my ($target,$max,$randomize,$TeXlayout,$checkboxvalue,$checkboxchoices,
+      $tex_option_switch,@opt)=@_;
+  if (!defined(@{ $Apache::response::foilgroup{'names'} })) {return;}
+  my @names = @{ $Apache::response::foilgroup{'names'} };
+  my @truelist;
+  my @falselist;
+  my $result;  
+  my $name;
+  my $displayoptionintex=1;
+  my @alphabet = ('A'..'Z');
+  my @whichopt = &whichfoils($max,$randomize);
+  unless (($target eq 'tex') && ($tex_option_switch eq 'nochoice')) {
+      &check_for_invalid(\@whichopt,\@opt);
+  }
+  my $part=$Apache::inputtags::part;
+  my $id=$Apache::inputtags::response[-1];
+  my $break;
+  if ( ($target ne 'tex') &&
+       &Apache::response::show_answer() ) {
+    my $temp=1;
+    foreach $name (@whichopt) {
+	my $text=$Apache::response::foilgroup{$name.'.text'};
+        my $lastresp;
+        unless ((($Apache::lonhomework::history{"resource.$part.type"} eq 'anonsurvey') || ($Apache::lonhomework::history{"resource.$part.type"} eq 'anonsurveycred')) && (defined($env{'form.grade_symb'}))) {
+            $lastresp = $Apache::lonhomework::history{"resource.$part.$id.submission"};
+        }
+	my %lastresponse=&Apache::lonnet::str2hash($lastresp);
+	my $lastopt=$lastresponse{$name};
+	if ($text!~/^\s*$/) { $break='<br />'; }
+	$result.=$break;
+	if ($target eq 'web') {
+	    my $value=$Apache::response::foilgroup{$name.'.value'};
+	    if (!($text=~s|<drawoptionlist\s*/>|$value|)) {
+		if ($text=~/^\s*$/) {
+		    $text=$value.$text;
+		} else {
+		    $text='<b>'.$value.':</b> '.$text;
+		}
+	    } else {
+                if (@whichopt > 1) {
+                    $text='&#149;'.$text;
+                }
+	    }
+	    $result.=$text."\n";
+	}
+      if ($Apache::lonhomework::type eq 'exam') {
+	  $result.=&webbubbles(\@opt,\@alphabet,$temp,$lastopt);
+      }
+      $temp++;
     }
-    if ($Apache::lonhomework::history{"resource.".
-				      $Apache::inputtags::part.
-				      ".solved"} =~ /^correct/ ) {
-	foreach $name (@whichopt) {
-	    $result.="<br />".$Apache::response::foilgroup{$name.'.value'}.
-		":".$Apache::response::foilgroup{$name.'.text'}."\n";
+  } else {
+    my $temp=1;
+    my %lastresponse;
+    my $newvariation;
+    if ((($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) {
+        %lastresponse=&Apache::lonnet::str2hash($Apache::lonhomework::history{"resource.$part.$id.submission"});
+    }
+    my $internal_counter=$Apache::lonxml::counter;
+    my $checkboxopt=&check_box_opt($target,$checkboxvalue,@opt);
+    if ($checkboxopt) {
+       $result.='<br />'.
+                ($checkboxchoices?&mt('Choices: ').'<b>'.$opt[0].','.$opt[1].'</b>. ':'').
+                 &mt('Select all that are <b>[_1]</b>.',$checkboxopt);
+    }
+    foreach $name (@whichopt) {
+      my $text=$Apache::response::foilgroup{$name.'.text'};
+      if ($text!~/^\s*$/) {
+	  if ($target eq 'tex') {
+	      $break='\vskip 0 mm ';
+	  } elsif ($target eq 'web') {
+	      $break='<br />';
+	  }
+      }
+      my $lastopt=$lastresponse{$name};
+      my $optionlist="<option></option>\n";
+
+      if($target eq 'tex' and $env{'form.pdfFormFields'} eq 'yes'
+         && $Apache::inputtags::status[-1] eq 'CAN_ANSWER') {
+          my $fieldname = $env{'request.symb'}.'&part_'.$Apache::inputtags::part.'&optionresponse'.'&HWVAL_'.$Apache::inputtags::response['-1'].':'.$temp;
+          $optionlist =  &Apache::lonxml::print_pdf_start_combobox($fieldname);
+      }
+
+      foreach my $option (@opt) {
+	  my $escopt=&HTML::Entities::encode($option,'\'"&<>');
+          if ($option eq $lastopt) {
+              if ($target eq 'tex' && $env{'form.pdfFormFields'} eq 'yes'
+                  && $Apache::inputtags::status[-1] eq 'CAN_ANSWER'
+                  && $Apache::lonhomework::type ne 'exam') {
+                  $optionlist .= &Apache::lonxml::print_pdf_add_combobox_option($option);
+              } else {
+                  $optionlist.="<option value='".$escopt."' selected=\"selected\">$option</option>\n";
+              }
+          } else {
+              if ($target eq 'tex' && $env{'form.pdfFormFields'} eq 'yes'
+                  && $Apache::inputtags::status[-1] eq 'CAN_ANSWER'
+                  && $Apache::lonhomework::type ne 'exam') {
+                  $optionlist .= &Apache::lonxml::print_pdf_add_combobox_option($option);
+              } else {
+                  $optionlist.="<option value='".$escopt."'>$option</option>\n";
+              }
+          }
+      }
+      if ($target ne 'tex') {
+	  if ($Apache::lonhomework::type ne 'exam') {
+# we are on the web, this is not an exam, and the problem can be answered
+              if ($checkboxopt) {
+# generate checkboxes
+                  my $fieldname=$Apache::inputtags::response['-1'].':'.$temp;
+                  my $altopt=$opt[0];
+                  if ($opt[0] eq $checkboxopt) {
+                     $altopt=$opt[1];
+                  }
+                  my $defopt=$lastopt;
+                  unless ($defopt) { $defopt=$altopt; }
+                  my $escdefopt=&HTML::Entities::encode($defopt,'\'"&<>');
+                  my $esccheckboxopt=&HTML::Entities::encode($checkboxopt,'\'"&<>');
+                  my $escaltopt=&HTML::Entities::encode($altopt,'\'"&<>');
+# checkboxopt is how the box is labelled
+# altopt is the alternative option
+# lastopt is what the user submitted before
+# defopt is what the field is going to start out with: either previous choice or altopt
+# fieldname is this input field's name after HWVAL_
+                  $optionlist='<input type="hidden" name="HWVAL_'.$fieldname.'" value="'.$escdefopt.'" />'.
+                  '<input type="checkbox" name="HWCHK_'.$fieldname.'" onclick="javascript:if (this.form.elements[\'HWCHK_'.
+                  $fieldname.'\'].checked) { this.form.elements[\'HWVAL_'.$fieldname.'\'].value=\''.$esccheckboxopt.'\'; } else { this.form.elements[\'HWVAL_'.$fieldname.'\'].value=\''.$escaltopt.'\'; };setSubmittedPart(\''.$part.'\');"'.($defopt eq $checkboxopt?' checked="checked"':'')." />\n";
+              } else {
+# classic selection list
+	          $optionlist='<select onchange="javascript:setSubmittedPart(\''.
+		  $part.'\');" name="HWVAL_'.
+		  $Apache::inputtags::response['-1'].':'.$temp.'">'.
+		  $optionlist."</select>\n";
+              }
+	  } else {
+	      $optionlist='<u>'.('&nbsp;'x10).'</u>';
+	  }
+	  if ($text=~s|<drawoptionlist\s*/>|$optionlist|) {
+	      if ($Apache::lonhomework::type ne 'exam') {
+                  if (@whichopt > 1) {  
+                      $text='&#149;'.$text;
+                  }
+	      }
+	  } else {
+	      if ($Apache::lonhomework::type ne 'exam') {
+		  $text=$optionlist.$text;
+	      }
+	  }
+	  $result.=$break.$text."\n";
+	  if ($Apache::lonhomework::type eq 'exam') {
+	      $result.=&webbubbles(\@opt,\@alphabet,$temp,$lastopt);
+	  }
+	  $temp++;
+      } else {
+	  my $texoptionlist='';
+	  if ($displayoptionintex &&
+	      $Apache::lonhomework::type ne 'exam') {
+	      $texoptionlist = &optionlist_correction($TeXlayout,@opt);
+	  }
+	  if ($text=~/<drawoptionlist\s*\/>/) {
+	      $text=~s|<drawoptionlist\s*\/>| \\makebox\[0\.3in\]\[b\]\{\\hrulefill\} |g;
+	  }
+
+	  if ($text=~m/\\item /) {
+	      if ($Apache::lonhomework::type eq 'exam') {
+	          $text=~s/\\item/\\vskip 2 mm/;
+	      } elsif ($env{'form.pdfFormFields'} ne 'yes') {
+                  $result.= $texoptionlist.$text;
+              }
+          } else {
+	      if ($Apache::lonhomework::type eq 'exam') {
+		  $result.= $texoptionlist.'  '.$text;
+	      } elsif ($env{'form.pdfFormFields'} ne 'yes') {
+		  if ($text=~/\S/) {
+                      $result.= $texoptionlist.'\vspace*{-2 mm}\item '.$text;
+                  } else {
+                      $result.= $texoptionlist;
+                  }
+	      }
+	  }
+	  if ($Apache::lonhomework::type eq 'exam') {
+	      $result.='\vskip -1 mm\noindent';
+              my ($numrows,$bubbles_per_row) = &getnumrows(scalar(@opt)); 
+              if ($numrows == 1) {  
+                  $result .= '\textbf{'.$internal_counter.'}. \vskip -3mm';
+              } else {
+                  my $linetext;
+                  for (my $i=0; $i<$numrows; $i++) {
+                      $linetext .= $internal_counter+$i.', ';
+                  }
+                  $linetext =~ s/,\s$//;
+                  $result .= '\small {\textbf{'.$linetext.'}} '.
+                             '\hskip 2 mm {\footnotesize '.
+                             &mt('(Bubble once in [_1] lines)',$numrows).
+                             '} \vskip 1 mm';
+              }
+              $result.= &bubbles(\@alphabet,\@opt,undef,undef,$numrows,
+                                 $bubbles_per_row,$internal_counter).
+                        ' \strut ';
+	      $internal_counter += $numrows;
+	  }
+          if ($target eq 'tex' && $env{'form.pdfFormFields'} eq 'yes'
+              && $Apache::inputtags::status[-1] eq 'CAN_ANSWER'
+              && $Apache::lonhomework::type ne 'exam') {
+              $text =~ s/\\item//m;
+              $result .= " $optionlist ". &Apache::lonxml::print_pdf_end_combobox($text).'\strut \\\\';
+              $temp++;
+          }
+	  $displayoptionintex=0;
+      }
+    }
+  }
+
+  if ($target eq 'web') {
+      my $data = [\@whichopt,'submissiongrading'];
+      my $questiontype;
+      if ($Apache::lonhomework::type eq 'randomizetry') {
+          $questiontype = $Apache::lonhomework::type,
+      }
+      &Apache::response::setup_prior_tries_hash(\&Apache::rankresponse::format_prior_answer,$data,$questiontype);
+  }
+
+  if ($target ne 'tex') {
+      return $result.$break;
+  } else {
+      return $result;
+  }
+}
+
+
+sub optionlist_correction {
+    my ($TeXlayout,@options) = @_;
+    my $texoptionlist='\\item [] '.&mt('Choices:').' ';
+    if ($TeXlayout eq 'vertical') {$texoptionlist='\\item []';}
+    if (scalar(@options) > 0) {
+	foreach my $option (@options) {
+	    $texoptionlist.='{\bf '.
+		&Apache::lonxml::latex_special_symbols($option).
+		'}';
+	    if ($TeXlayout eq 'vertical') {
+		$texoptionlist.=' \vskip 0 mm ',
+	    } else {
+		$texoptionlist.=', ';
+	    }
 	}
+	$texoptionlist=~s/, $//;
+	if ($TeXlayout ne 'vertical') {$texoptionlist.='.';}
     } else {
-	my $temp=1;
-	foreach $name (@whichopt) {
-	    $result .= "<br /><select ".
-		"name=\"HWVAL_$Apache::inputtags::response['-1']:$temp\">".
-		$optionlist.
-		"</select>\n".$Apache::response::foilgroup{$name.'.text'}."\n";
-	    $temp++;
-	}
+	if ($TeXlayout ne 'vertical') {$texoptionlist='\\item [] \\vskip -5 mm';}
     }
-    return $result."<br />";
+    return $texoptionlist;
 }
 
-# ================================== Start concept group (return scalar string)
-sub start_conceptgroup {
-    my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
-    $Apache::optionresponse::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').
-	           "</td></tr>";
-	$result .= "<tr><td colspan=\"3\">\n";
-    }
-    if ($target eq 'modified') {
-        my $constructtag = &Apache::edit::get_new_args($token,$parstack,
-						     $safeeval,'concept');
-	if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
+
+sub webbubbles {
+    my ($ropt,$ralphabet,$temp,$lastopt)=@_;
+    my @opt=@$ropt; 
+    my @alphabet=@$ralphabet;
+    my $result='';
+    my $number_of_bubbles = $#opt + 1;
+    $result.= '<table border="1"><tr>';
+    for (my $ind=0;$ind<$number_of_bubbles;$ind++) {
+	my $checked='';
+	if ($lastopt eq $opt[$ind]) {
+	    $checked=' checked="on" ';
+	}
+	$result.='<td><input type="radio" name="HWVAL_'.
+	    $Apache::inputtags::response['-1'].':'.$temp.
+	    '" value="'.$opt[$ind].'" '.$checked.' />';
+	if ($alphabet[$ind]) {
+	    $result.=$alphabet[$ind].': ';
+	}
+	$result.=$opt[$ind].'</td>';
     }
+    $result.='</tr></table>';
     return $result;
 }
 
-# ==================================== End concept group (return scalar string)
-sub end_conceptgroup {
-    my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
-    $Apache::optionresponse::conceptgroup = 0;
-    my $result = '';
-    if ($target eq 'web' || $target eq 'grade') {
-	#if not there aren't any foils to display and thus no question
-	if (defined(@{ $Apache::response::conceptgroup{'names'} })) {
-	    my @names = @{ $Apache::response::conceptgroup{'names'} };
-	    my $pick = int rand $#names+1;
-	    my $name = $names[$pick];
-	    push @{ $Apache::response::foilgroup{'names'} }, $name;
-	    $Apache::response::foilgroup{"$name.value"} =
-		$Apache::response::conceptgroup{"$name.value"};
-	    $Apache::response::foilgroup{"$name.text"} =
-		$Apache::response::conceptgroup{"$name.text"};
-	    my $concept = 
-		&Apache::lonxml::get_param('concept',$parstack,$safeeval);
-	    $Apache::response::foilgroup{"$name.concept"} = $concept;
-	    &Apache::lonxml::debug("Selecting $name in $concept");
-	}
+
+sub bubbles {
+    my ($ralphabet,$ropt,$response,$max_width,$numrows,$bubbles_per_row,
+        $internal_counter) = @_;
+    my @alphabet = @$ralphabet;
+    my @opt = @$ropt;
+    my ($result,$head,$line) =('','','');
+    my $number_of_bubbles = $#opt + 1;
+    my $current_length = 0;
+    my $textwidth;
+    if (defined($max_width)) {
+	$textwidth=$max_width;
+	&Apache::lonxml::debug("Max width passed in: $max_width");
+    } elsif ($env{'form.textwidth'} ne '') {
+	$env{'form.textwidth'}=~/(\d+)/;
+	$textwidth=$1;
+	&Apache::lonxml::debug("Max width from form: $textwidth");
+    } else {
+	$env{'form.textwidth'}=~/(\d*)\.?(\d*)/;
+	$textwidth=$1.'.'.$2;
+	&Apache::lonxml::debug("Max width defaults? $textwidth");
     }
-    if ($target eq 'edit') {
-	$result = &Apache::edit::end_table();
+    &Apache::lonxml::debug("Final maxwidth: $textwidth");
+    for (my $ind=0;$ind<=$number_of_bubbles;$ind++) {
+        my $item;
+        if ($numrows > 1) {
+            my $num = $internal_counter+int($ind/$bubbles_per_row);
+            my $idx = int($ind % $bubbles_per_row);
+            $item = $num.$alphabet[$idx];
+        } else {
+            $item = $alphabet[$ind];
+        }
+	my $leftmargin;
+	$opt[$ind]=&Apache::lonxml::latex_special_symbols($opt[$ind]);
+	if ($response eq 'rankresponse') {$opt[$ind]='Rank '.$opt[$ind];}
+	if ($ind==0) {$leftmargin=6;} else {$leftmargin=10;}
+
+	$current_length += (length($opt[$ind])+length($item)+5)*2;
+        
+	if ($current_length<($textwidth-$leftmargin) and $ind!=$number_of_bubbles) {
+            
+	    $line.='\hskip 4 mm {\small \textbf{'.$item.'}}$\bigcirc$\hskip -1 mm & \hskip -3 mm {\small '.$opt[$ind].'} & ';
+	    $head.='lr';
+	} else {
+	    $line=~s/\&\s*$//;
+	    $result.='\vskip -1 mm\noindent\setlength{\tabcolsep}{2 mm}\renewcommand{\arraystretch}{1.25}\begin{tabular}{'.$head.'}'.$line.'\\\\\end{tabular}\vskip 0 mm';
+	    $line = '\hskip 4 mm {\small \textbf{'.$item.'}}$\bigcirc$\hskip -1 mm & \hskip -3 mm {\small '.$opt[$ind].'} & ';
+	    $head ='lr';
+	    $current_length = (length($opt[$ind])+length($item))*2;
+	}
+
     }
     return $result;
 }
 
-# ======================================================== Insert concept group
+sub start_conceptgroup {
+  my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
+  $Apache::optionresponse::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::optionresponse::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::option,
+					       $parstack,$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;
+  my $result="\n\t\t<conceptgroup concept=\"\">".&insert_foil()."\n\t\t</conceptgroup>\n";
+  return $result;
 }
 
-# =========================================== Start foil (return scalar string)
 sub start_foil {
-    my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
-    my $result = '';
-    if ($target eq 'web') { &Apache::lonxml::startredirection; }
-    if ($target eq 'edit') {
-	$result = &Apache::edit::tag_start($target,$token,"Foil");
-	my $level = '-2';
-	if ($$tagstack['-2'] eq 'conceptgroup') { $level = '-3'; }
-	my @opt;
-	eval '@opt ='.&Apache::lonxml::get_param('options',$parstack,
-						 $safeeval,$level);
-	$result .= &Apache::edit::text_arg('Name:','name',$token);
-	$result .= &Apache::edit::select_or_text_arg('Correct Option:',
-						     'value',
-						     ['unused',(@opt)],$token,
-						     '15');
-	$result .= '</td></tr><tr><td colspan="3">';
-    }
-    if ($target eq 'modified') {
-	my $constructtag = &Apache::edit::get_new_args($token,$parstack,
-						       $safeeval,'value',
-						       'name');
-	if ($constructtag) { $result = &Apache::edit::rebuild_tag($token); }
+  my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
+  my $result='';
+  if ($target eq 'web' || $target eq 'tex' || $target eq 'analyze' ) {
+      &Apache::lonxml::startredirection;
+      if ($target eq 'analyze') {
+	  &Apache::response::check_if_computed($token,$parstack,$safeeval,'value');
+      }
+  } elsif ($target eq 'edit') {
+    $result=&Apache::edit::tag_start($target,$token,"Foil");
+    my $level='-2';
+    if ($$tagstack['-2'] eq 'conceptgroup') { $level = '-3'; }
+    my @opt;
+    eval '@opt ='.&Apache::lonxml::get_param('options',$parstack,$safeeval,$level);
+    $result.=&Apache::edit::text_arg('Name:','name',$token);
+    $result.= &Apache::edit::select_or_text_arg('Correct Option:','value',
+					       ['unused',(@opt)],$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);
     }
-    return $result;
+    $result .=&Apache::edit::end_row().&Apache::edit::start_spanning_row();
+  } elsif ($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;
 }
 
-# ============================================= End foil (return scalar string)
 sub end_foil {
-    my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style) = @_;
-    my $text = '';
-    my $result = '';
-    if ($target eq 'web') { $text=&Apache::lonxml::endredirection; }
-    if ($target eq 'web' || $target eq 'grade') {
-	my $value = &Apache::lonxml::get_param('value',$parstack,$safeeval);
-	if ($value ne 'unused') {
-	    my $name = &Apache::lonxml::get_param('name',$parstack,$safeeval);
-	    &Apache::lonxml::debug("Got a name of :$name:");
-	    if (!$name) { $name = $Apache::lonxml::curdepth; }
-	    &Apache::lonxml::debug("Using a name of :$name:");
-	    if ( $Apache::optionresponse::conceptgroup ) {
-		push @{ $Apache::response::conceptgroup{'names'} }, $name;
-		$Apache::response::conceptgroup{"$name.value"} = $value;
-		$Apache::response::conceptgroup{"$name.text"} = $text;	
-	    } else {
-		push @{ $Apache::response::foilgroup{'names'} }, $name;
-		$Apache::response::foilgroup{"$name.value"} = $value;
-		$Apache::response::foilgroup{"$name.text"} = $text;
-	    }
-	}
+  my ($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 'tex') {$text=~s/\\strut\s*\\\\\s*\\strut/\\vskip 0 mm/;}
+      if (($target eq 'tex') and ($Apache::lonhomework::type ne 'exam') and ($text=~/\S/)) {$text = '\vspace*{-2 mm}\item '.$text;} 
+  }
+  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 $\triangleright$ '.$text;
     }
-    if ($target eq 'edit') {
-	$result .= &Apache::edit::tag_end($target,$token,'');
+    if ($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::optionresponse::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 $result;
+}
+
+sub start_drawoptionlist {
+    my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
+    if ($target !~ /^(?:meta|answer|modified|edit)$/) {
+	return $token->[4];
+    }
+}
+
+sub end_drawoptionlist {
+    my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
+    if ($target !~ /^(?:meta|answer|modified|edit)$/) {
+	return $token->[2];
     }
-    return $result;
 }
 
-# ========================================== Insert foil (return scalar string)
 sub insert_foil {
     return '
 <foil name="" value="unused">
@@ -364,7 +965,88 @@ sub insert_foil {
 </foil>';
 }
 
-1;
+sub insert_drawoptionlist {
+    return '<drawoptionlist />';
+}
+
+sub getnumrows {
+    my ($numitems) = @_;
+    my $bubbles_per_row;
+    my $default_numbubbles = 10;
+    if (($env{'form.bubbles_per_row'} =~ /^\d+$/) &&
+        ($env{'form.bubbles_per_row'} > 0)) {
+        $bubbles_per_row = $env{'form.bubbles_per_row'};
+    } else {
+        $bubbles_per_row = $default_numbubbles;
+    }
+    my $numrows = int ($numitems/$bubbles_per_row);
+    if (($numitems % $bubbles_per_row) != 0) {
+        $numrows ++;
+    }
+    return ($numrows,$bubbles_per_row);
+}
 
+1;
 __END__
  
+=head1 NAME
+
+Apache::optionresponse.pm;
+
+=head1 SYNOPSIS
+
+Handles tags associated with showing a list of
+options.
+
+This is part of the LearningOnline Network with CAPA project
+described at http://www.lon-capa.org.
+
+=head1 HANDLER SUBROUTINE
+
+start_optionresponse()
+
+=head1 OTHER SUBROUTINES
+
+=over
+
+=item end_optionresponse()
+
+=item start_foilgroup()
+
+=item end_foilgroup()
+
+=item getfoilcounts()
+
+=item displayanswers()
+
+=item check_for_invalid()
+
+=item displayfoils()
+
+=item optionlist_correction()
+
+=item webbubbles()
+
+=item bubbles()
+
+=item start_conceptgroup()
+
+=item end_conceptgroup()
+
+=item insert_conceptgroup()
+
+=item start_foil()
+
+=item end_foil()
+
+=item start_drawoptionlist()
+
+=item end_drawoptionlist()
+
+=item insert_foil()
+
+=item insert_drawoptionlist()
+
+=back
+
+=cut