--- loncom/xml/londefdef.pm	2003/07/14 14:29:26	1.153
+++ loncom/xml/londefdef.pm	2003/10/16 15:29:45	1.182
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # Tags Default Definition Module 
 #
-# $Id: londefdef.pm,v 1.153 2003/07/14 14:29:26 sakharuk Exp $
+# $Id: londefdef.pm,v 1.182 2003/10/16 15:29:45 sakharuk Exp $
 # 
 #
 # Copyright Michigan State University Board of Trustees
@@ -25,8 +25,7 @@
 # /home/httpd/html/adm/gpl.txt
 #
 # http://www.lon-capa.org/
-#
-# Copyright for TtHfunc and TtMfunc by Ian Hutchinson. 
+## Copyright for TtHfunc and TtMfunc by Ian Hutchinson. 
 # TtHfunc and TtMfunc (the "Code") may be compiled and linked into 
 # binary executable programs or libraries distributed by the 
 # Michigan State University (the "Licensee"), but any binaries so 
@@ -52,6 +51,8 @@ use Image::Magick;
 use Apache::lonmenu();
 use Apache::lonmeta();
 
+$Apache::londefdef::TD_redirection=0;
+
 BEGIN {
 
     &Apache::lonxml::register('Apache::londefdef',('a','abbr','acronym','accessrule','address','allow','applet','area','b','base','basefont','bgo','bgsound','big','blink','blockquote','blankspace','body','br','button','caption','center','cite','code','col','colgroup','dd','del','dfn','dir','div','dl','dt','em','embed','externallink','fieldset','font','form','frame','frameset','h1','h2','h3','h4','h5','h6','head','hr','html','i','iframe','img','input','ins','insert','isindex','kbd','keygen','label','layer','legend','li','link','m','map','marquee','menu','meta','multicol','nobr','noembed','noframes','nolayer','noscript','object','ol','optgroup','option','output','p','param','pre','q','s','samp','select','server','small','spacer','span','strike','strong','sub','sup','table','tbody','td','textarea','tfoot','th','thead','title','tr','tt','tthoption','u','ul','var','wbr','hideweboutput'));
@@ -91,9 +92,15 @@ sub start_m {
 	    $Apache::lontexconvert::errorstring='';
 	}
 	#&Apache::lonxml::debug("M is ends with:$currentstring:");
+	$Apache::lonxml::post_evaluate=0;
     } elsif ($target eq 'tex') {
 	$currentstring = &Apache::lonxml::get_all_text_unbalanced("/m",$parser);
+	my $eval=&Apache::lonxml::get_param('eval',$parstack,$safeeval);
+	if ($eval eq 'on') {
+	    $currentstring=&Apache::run::evaluate($currentstring,$safeeval,$$parstack[-1]);
+	}
 	if ($currentstring=~/^(\s*\\\\\s*)*$/) {$currentstring = ' \vskip 0 mm ';}
+	$Apache::lonxml::post_evaluate=0;
     } else {
 	my $inside = &Apache::lonxml::get_all_text_unbalanced("/m",$parser);
     }
@@ -133,7 +140,7 @@ sub end_tthoption {
     return $result;
 }
 
-#-- <html> tag    
+#-- <html> tag (end tag optional)
 sub start_html {
     my ($target,$token) = @_;
     my $currentstring = '';
@@ -163,9 +170,11 @@ sub start_html {
                            \renewcommand{\deg}{$^{\circ}$}
                            \usepackage{longtable}
                            \usepackage{textcomp}
+                           \usepackage{makeidx}
                            \usepackage[dvips]{graphicx}
                            \usepackage{epsfig}\usepackage{calc}
-\newenvironment{choicelist}{\begin{list}{}{\setlength{\rightmargin}{0in}\setlength{\leftmargin}{0.13in}\setlength{\topsep}{0.05in}\setlength{\itemsep}{0.022in}\setlength{\parsep}{0in}\setlength{\belowdisplayskip}{0.04in}\setlength{\abovedisplayskip}{0.05in}\setlength{\abovedisplayshortskip}{-0.04in}\setlength{\belowdisplayshortskip}{0.04in}}}{\end{list}}';
+\newenvironment{choicelist}{\begin{list}{}{\setlength{\rightmargin}{0in}\setlength{\leftmargin}{0.13in}\setlength{\topsep}{0.05in}\setlength{\itemsep}{0.022in}\setlength{\parsep}{0in}\setlength{\belowdisplayskip}{0.04in}\setlength{\abovedisplayskip}{0.05in}\setlength{\abovedisplayshortskip}{-0.04in}\setlength{\belowdisplayshortskip}{0.04in}}}{\end{list}}
+\renewenvironment{theindex}{\begin{list}{}{{\vskip 1mm \noindent \large\textbf{Index}} \newline \setlength{\rightmargin}{0in}\setlength{\leftmargin}{0.13in}\setlength{\topsep}{0.01in}\setlength{\itemsep}{0.1in}\setlength{\parsep}{-0.02in}\setlength{\belowdisplayskip}{0.01in}\setlength{\abovedisplayskip}{0.01in}\setlength{\abovedisplayshortskip}{-0.04in}\setlength{\belowdisplayshortskip}{0.01in}}}{\end{list}}';
     }
     return $currentstring;
 }
@@ -179,7 +188,7 @@ sub end_html {
     return $currentstring;
 }
 
-#-- <head> tag
+#-- <head> tag (end tag optional)
 sub start_head {
     my ($target,$token) = @_;
     my $currentstring = '';
@@ -192,14 +201,14 @@ sub start_head {
 sub end_head {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
+    if ($target eq 'web' && $ENV{'request.state'} eq 'published') {
 	$currentstring = &Apache::lonmenu::registerurl(undef,$target).
 	    $token->[2];    
     } 
     return $currentstring;
 }
 
-#-- <map> tag
+#-- <map> tag (end tag required)
 sub start_map {
     my ($target,$token) = @_;
     my $currentstring = '';
@@ -218,13 +227,15 @@ sub end_map {
     return $currentstring;
 }
 
-#-- <select> tag
+#-- <select> tag (end tag required)
 sub start_select {
     my ($target,$token) = @_;
     my $currentstring = '';
     if ($target eq 'web') {
 	$currentstring = $token->[4];     
-    } 
+    }  elsif ($target eq 'tex') {
+	$Apache::londefdef::select=0;
+    }
     return $currentstring;
 }
 
@@ -237,13 +248,20 @@ sub end_select {
     return $currentstring;
 }
 
-#-- <option> tag
+#-- <option> tag (end tag optional)
 sub start_option {
-    my ($target,$token) = @_;
+    my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';
     if ($target eq 'web') {
 	$currentstring = $token->[4];     
-    } 
+    } elsif ($target eq 'tex') {
+	$Apache::londefdef::select++;
+	if ($Apache::londefdef::select == 1) {
+	    $currentstring='\noindent\fbox{'.&Apache::lonxml::get_param('value',$parstack,$safeeval).'}\keephidden{';
+	} else {
+	    $currentstring='\keephidden{';
+	}
+    }
     return $currentstring;
 }
 
@@ -252,11 +270,13 @@ sub end_option {
     my $currentstring = '';
     if ($target eq 'web') {
 	$currentstring = $token->[2];    
-    } 
+    }  elsif ($target eq 'tex') {
+	$currentstring='}';
+    }
     return $currentstring;
 }
 
-#-- <input> tag
+#-- <input> tag (end tag forbidden)
 sub start_input {
     my ($target,$token) = @_;
     my $currentstring = '';
@@ -275,7 +295,7 @@ sub end_input {
     return $currentstring;
 }
 
-#-- <textarea> tag
+#-- <textarea> tag (end tag required)
 sub start_textarea {
     my ($target,$token) = @_;
     my $currentstring = '';
@@ -294,7 +314,7 @@ sub end_textarea {
     return $currentstring;
 }
 
-#-- <form> tag
+#-- <form> tag (end tag required)
 sub start_form {
     my ($target,$token) = @_;
     my $currentstring = '';
@@ -313,14 +333,14 @@ sub end_form {
     return $currentstring;
 }
 
-#-- <title> tag
+#-- <title> tag (end tag required)
 sub start_title {
     my ($target,$token) = @_;
     my $currentstring = '';
     if ($target eq 'web') {
 	$currentstring = $token->[4];     
     } elsif ($target eq 'tex') {
-	$currentstring .= '\keephidden{' 
+	$currentstring .= '\keephidden{Title of the document:  ' 
     }
     if ($target eq 'meta') {
 	$currentstring='<title>';
@@ -344,7 +364,7 @@ sub end_title {
     return $currentstring;
 }
 
-#-- <meta> tag
+#-- <meta> tag (end tag forbidden)
 sub start_meta {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';
@@ -364,11 +384,25 @@ sub start_meta {
 	    $name=~s/\s/\_/gs;
 	    $name=~s/\W//gs;
 	    if ($name) {
-		$currentstring='<'.$name.'>'.
+		$currentstring='<'.$name;
+                 my $display=&Apache::lonxml::get_param
+		('display',$parstack,$safeeval,undef,1);
+                if ($display) {
+                    $display=~s/\"/\'/g;
+		    $currentstring.=' display="'.$display.'"';
+                }
+		$currentstring.='>'.
 		    &Apache::lonxml::get_param
 			('content',$parstack,$safeeval,undef,1).
 			'</'.$name.'>';
 	    }
+            my $display=&Apache::lonxml::get_param
+		('display',$parstack,$safeeval,undef,1);
+            if ($display) {
+		$display=&HTML::Entities::encode($display);
+		$currentstring.='<'.$name.'.display>'.$display.
+                               '</'.$name.'.display>';
+            }
 	}
     } elsif ($target eq 'tex') {
 	my $content=&Apache::lonxml::get_param('content',$parstack,$safeeval);
@@ -381,7 +415,7 @@ sub start_meta {
 }
 
 sub end_meta {
-    my ($target,$token,$tagstack,$parstack,$parser) = @_;
+    my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';
     if ($target eq 'web') {
 	my $args='';
@@ -390,8 +424,11 @@ sub end_meta {
 	    $currentstring = $token->[4];
 	}
     } elsif ($target eq 'tex') {
-	$currentstring=&Apache::lonxml::endredirection();
-	$currentstring='';
+	my $content=&Apache::lonxml::get_param('content',$parstack,$safeeval);
+	my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval);
+	if ((not defined $content) && (not defined $name)) {
+	    &Apache::lonxml::endredirection();
+	}
     }
     return $currentstring;
 }
@@ -441,15 +478,43 @@ sub end_accessrule {
     return $currentstring;
 }
 
-#-- <body> tag
+#-- <body> tag (end tag required)
 sub start_body {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';
     if ($target eq 'web') {
-	if (!$Apache::lonxml::registered) {
+	if ($Apache::lonhomework::parsing_a_problem) {
+	    &Apache::lonxml::warning("<body> tag found inside of <problem> tag this can cause problems.");
+	    return '';
+	}
+	if (!$Apache::lonxml::registered && 
+	    $ENV{'request.state'} eq 'published') {
 	    $currentstring.='<head>'.
 		&Apache::lonmenu::registerurl(undef,$target).'</head>';
 	}
+# Accessibility
+	if ($ENV{'browser.imagesuppress'} eq 'on') {
+	    delete($token->[2]->{'background'});
+	}
+	if ($ENV{'browser.fontenhance'} eq 'on') {
+	    my $style='';
+	    foreach my $key (keys(%{$token->[2]})) {
+		if ($key =~ /^style$/i) {
+		    $style.=$token->[2]->{$key}.';';
+		    delete($token->[2]->{$key});
+		}
+	    }
+	    $token->[2]->{'style'}=$style.'; font-size: x-large;';
+	}
+	if ($ENV{'browser.blackwhite'} eq 'on') {
+	    delete($token->[2]->{'font'});
+	    delete($token->[2]->{'link'});
+	    delete($token->[2]->{'alink'});
+	    delete($token->[2]->{'vlink'});
+	    delete($token->[2]->{'bgcolor'});
+	    delete($token->[2]->{'background'});
+	}
+# Overload loads
 	my $onLoad='';
 	foreach my $key (keys(%{$token->[2]})) {
 	    if ($key =~ /^onload$/i) {
@@ -494,12 +559,12 @@ sub end_body {
     if ($target eq 'web') {
 	$currentstring = $token->[2];     
     } elsif ($target eq 'tex') {
-	$currentstring = '\end{document}';  
+	$currentstring = '\strut\newline\noindent\makebox[\textwidth/$number_of_columns][b]{\hrulefill}\newline\noindent \end{document}';  
     } 
     return $currentstring;
 }
 
-#-- <center> tag
+#-- <center> tag (end tag required)
 sub start_center {
     my ($target,$token) = @_;
     my $currentstring = '';
@@ -522,7 +587,7 @@ sub end_center {
     return $currentstring;
 }
 
-#-- <b> tag
+#-- <b> tag (end tag required)
 sub start_b {
     my ($target,$token) = @_;
     my $currentstring = '';
@@ -545,7 +610,7 @@ sub end_b {
     return $currentstring;
 }
 
-#-- <strong> tag
+#-- <strong> tag (end tag required)
 sub start_strong {
     my ($target,$token) = @_;
     my $currentstring = '';
@@ -560,8 +625,7 @@ sub start_strong {
 sub end_strong {
     my ($target,$token) = @_;
     my $currentstring = '';
-    if ($target eq 'web') {
-	
+    if ($target eq 'web') {	
 	$currentstring = $token->[2];     
     } elsif ($target eq 'tex') {
 	$currentstring = '}';  
@@ -569,7 +633,7 @@ sub end_strong {
     return $currentstring;
 }
 
-#-- <h1> tag
+#-- <h1> tag (end tag required)
 sub start_h1 {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';
@@ -833,14 +897,14 @@ sub end_h6 {
     return $currentstring;
 }
 
-#--- <cite> tag
+#--- <cite> tag (end tag required)
 sub start_cite {
     my ($target,$token) = @_;
     my $currentstring = '';
     if ($target eq 'web') {
 	$currentstring .= $token->[4];
     } elsif ($target eq 'tex') {
-	$currentstring .= "\\textit{";
+	$currentstring .= '\textit{';
     }
     return $currentstring;
 }
@@ -851,12 +915,12 @@ sub end_cite {
     if ($target eq 'web') {
 	$currentstring .= $token->[2];
     } elsif ($target eq 'tex') {
-	$currentstring .= "}";
+	$currentstring .= '}';
     }
     return $currentstring;
 }
 
-#-- <i> tag
+#-- <i> tag (end tag required)
 sub start_i {
     my ($target,$token) = @_;
     my $currentstring = '';
@@ -879,14 +943,14 @@ sub end_i {
     return $currentstring;
 }
 
-#-- <address> tag
+#-- <address> tag (end tag required)
 sub start_address {
     my ($target,$token) = @_;
     my $currentstring = '';
     if ($target eq 'web') {
 	$currentstring .= $token->[4];
     } elsif ($target eq 'tex') {
-	$currentstring .= "\\textit{";
+	$currentstring .= '\textit{';
     }
     return $currentstring;
 }
@@ -897,19 +961,19 @@ sub end_address {
     if ($target eq 'web') {
 	$currentstring .= $token->[2];
     } elsif ($target eq 'tex') {
-	$currentstring .= "}";
+	$currentstring .= '}';
     }
     return $currentstring;
 }
 
-#-- <dfn> tag
+#-- <dfn> tag (end tag required)
 sub start_dfn {
     my ($target,$token) = @_;
     my $currentstring = '';
     if ($target eq 'web') {
 	$currentstring .= $token->[4];
     } elsif ($target eq 'tex') {
-	$currentstring .= "\\textit{";
+	$currentstring .= '\textit{';
     } 
     return $currentstring;
 }
@@ -920,12 +984,12 @@ sub end_dfn {
     if ($target eq 'web') {
 	$currentstring .= $token->[2];
     } elsif ($target eq 'tex') {
-	$currentstring .= "}";
+	$currentstring .= '}';
     }
     return $currentstring;
 }
 
-#-- <tt> tag
+#-- <tt> tag (end tag required)
 sub start_tt {
     my ($target,$token) = @_;
     my $currentstring = '';
@@ -948,14 +1012,14 @@ sub end_tt {
     return $currentstring;
 }
 
-#-- <kbd> tag
+#-- <kbd> tag (end tag required)
 sub start_kbd {
     my ($target,$token) = @_;
     my $currentstring = '';
     if ($target eq 'web') {
 	$currentstring .= $token->[4];
     } elsif ($target eq 'tex') {
-	$currentstring .= "\\texttt";
+	$currentstring .= '\texttt{';
     }
     return $currentstring;
 }
@@ -966,12 +1030,12 @@ sub end_kbd {
     if ($target eq 'web') {
 	$currentstring .= $token->[2];
     } elsif ($target eq 'tex') {
-	$currentstring .= "}";
+	$currentstring .= '}';
     }
     return $currentstring;
 }
 
-#-- <code> tag
+#-- <code> tag (end tag required)
 sub start_code {
     my ($target,$token) = @_;
     my $currentstring = '';
@@ -994,7 +1058,7 @@ sub end_code {
     return $currentstring;
 }
 
-#-- <em> tag
+#-- <em> tag (end tag required)
 sub start_em {
     my ($target,$token) = @_;
     my $currentstring = '';
@@ -1017,14 +1081,14 @@ sub end_em {
     return $currentstring;
 }
 
-#-- <q> tag
+#-- <q> tag (end tag required)
 sub start_q {
     my ($target,$token) = @_;
     my $currentstring = '';
     if ($target eq 'web') {
 	$currentstring .= $token->[4];
     } elsif ($target eq 'tex') {
-	$currentstring .= "\\emph{";
+	$currentstring .= '\emph{';
     }
     return $currentstring;
 }
@@ -1035,19 +1099,21 @@ sub end_q {
     if ($target eq 'web') {
 	$currentstring .= $token->[2];
     } elsif ($target eq 'tex') {
-	$currentstring .= "}";
+	$currentstring .= '}';
     } 
     return $currentstring;
 }
 
-#-- <p> tag
+#-- <p> tag (end tag optional)
 sub start_p {
-    my ($target,$token) = @_;
+    my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';
     if ($target eq 'web') {
 	$currentstring .= $token->[4];
     } elsif ($target eq 'tex') {
-	$currentstring .= '\par ';
+	my $signal=1;
+	foreach my $tag (@$tagstack) {if (lc($tag) eq 'b') {$signal=0;}}
+	if ($signal) {$currentstring .= '\par ';}
     }
     return $currentstring;
 }
@@ -1061,7 +1127,7 @@ sub end_p {
     return $currentstring;
 }
 
-#-- <br> tag
+#-- <br> tag (end tag forbidden)
 sub start_br {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
     my $currentstring = '';
@@ -1084,7 +1150,7 @@ sub end_br {
     return $currentstring;
 }
 
-#-- <big> tag
+#-- <big> tag (end tag required)
 sub start_big {
     my ($target,$token) = @_;
     my $currentstring = '';
@@ -1107,7 +1173,7 @@ sub end_big {
     return $currentstring;
 }
 
-#-- <small> tag
+#-- <small> tag (end tag required)
 sub start_small {
     my ($target,$token) = @_;
     my $currentstring = '';
@@ -1130,7 +1196,7 @@ sub end_small {
     return $currentstring;
 }
 
-#-- <basefont> tag
+#-- <basefont> tag (end tag forbidden)
 sub start_basefont {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
     my $currentstring = '';
@@ -1159,13 +1225,18 @@ sub end_basefont {
     return $currentstring;
 }
 
-#-- <font> tag
+#-- <font> tag (end tag required)
 sub start_font {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
     my $currentstring = '';
     if ($target eq 'web') {
 	my $face=&Apache::lonxml::get_param('face',$parstack,$safeeval);
-	if ($face=~/symbol/i) {$Apache::lonxml::prevent_entity_encode++;}
+	if ($face=~/symbol/i) {
+	    $Apache::lonxml::prevent_entity_encode++;
+	} else {
+	    if (($ENV{'browser.fontenhance'} eq 'on') || 
+		($ENV{'browser.blackwhite'} eq 'on')) { return ''; }
+	}
 	$currentstring = $token->[4];     
     }  elsif ($target eq 'tex') {
 	my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
@@ -1192,7 +1263,7 @@ sub end_font {
     return $currentstring;
 }
  
-#-- <strike> tag
+#-- <strike> tag (end tag required)
 sub start_strike {
     my ($target,$token) = @_;
     my $currentstring = '';
@@ -1218,7 +1289,7 @@ sub end_strike {
     return $currentstring;
 }
 
-#-- <s> tag
+#-- <s> tag (end tag required)
 sub start_s {
     my ($target,$token) = @_;
     my $currentstring = '';
@@ -1244,7 +1315,7 @@ sub end_s {
     return $currentstring;
 }
 
-#-- <sub> tag
+#-- <sub> tag (end tag required)
 sub start_sub {
     my ($target,$token) = @_;
     my $currentstring = '';
@@ -1267,7 +1338,7 @@ sub end_sub {
     return $currentstring;
 }
 
-#-- <sup> tag
+#-- <sup> tag (end tag required)
 sub start_sup {
     my ($target,$token) = @_;
     my $currentstring = '';
@@ -1290,7 +1361,7 @@ sub end_sup {
     return $currentstring;
 }
 
-#-- <hr> tag
+#-- <hr> tag (end tag forbidden)
 sub start_hr {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';
@@ -1330,7 +1401,7 @@ sub end_hr {
     return $currentstring;
 }
 
-#-- <div> tag
+#-- <div> tag (end tag required)
 sub start_div {
     my ($target,$token) = @_;
     my $currentstring = '';
@@ -1349,7 +1420,7 @@ sub end_div {
     return $currentstring;
 }
 
-#-- <a> tag
+#-- <a> tag (end tag required)
 sub start_a {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';
@@ -1357,14 +1428,21 @@ sub start_a {
 	$currentstring .= $token->[4];
     } elsif ($target eq 'tex') {
 	my $a=&Apache::lonxml::get_param('href',$parstack,$safeeval,undef,1);
-	$a=~s/([^\\])%/$1\\\%/g;
-	$currentstring .= '\ref{'.$a.'}';
+	my $b=&Apache::lonxml::get_param('name',$parstack,$safeeval,undef,1);
+	if ($a=~/\S/) {
+	    $a=~s/([^\\])%/$1\\\%/g;
+	    $currentstring .= '\ref{URI: '.$a.'}';
+	} elsif ($b=~/\S/) {
+	    $currentstring .= '\ref{Anchor: '.$b.'}';
+	} else {
+	    $currentstring.='';
+	}
     }
     return $currentstring;
 }
 
 sub end_a {
-    my ($target,$token,$tagstack,$parstack,$safeeval) = @_;
+    my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';
     if ($target eq 'web') {
 	$currentstring .= $token->[2];
@@ -1372,9 +1450,9 @@ sub end_a {
     return $currentstring;
 }
 
-#-- <li> tag
+#-- <li> tag (end tag optional)
 sub start_li {
-    my ($target,$token,$tagstack,$parstack,$safeeval) = @_;
+    my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';
     if ($target eq 'web') {
 	$currentstring = $token->[4];     
@@ -1402,7 +1480,7 @@ sub end_li {
     return $currentstring;
 }
 
-#-- <u> tag
+#-- <u> tag (end tag required)
 sub start_u {
     my ($target,$token) = @_;
     my $currentstring = '';
@@ -1428,7 +1506,7 @@ sub end_u {
     return $currentstring;
 }
 
-#-- <ul> tag
+#-- <ul> tag (end tag required)
 sub start_ul {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';
@@ -1471,7 +1549,7 @@ sub end_ul {
     return $currentstring;
 }
 
-#-- <menu> tag
+#-- <menu> tag (end tag required)
 sub start_menu {
     my ($target,$token) = @_;
     my $currentstring = '';
@@ -1494,7 +1572,7 @@ sub end_menu {
     return $currentstring;
 }
 
-#-- <dir> tag
+#-- <dir> tag (end tag required)
 sub start_dir {
     my ($target,$token) = @_;
     my $currentstring = '';
@@ -1517,7 +1595,7 @@ sub end_dir {
     return $currentstring;
 }
 
-#-- <ol> tag
+#-- <ol> tag (end tag required)
 sub start_ol {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';
@@ -1570,78 +1648,115 @@ sub end_ol {
     return $currentstring;
 }
 
-#-- <dl> tag
+#-- <dl> tag (end tag required)
 sub start_dl {
     my ($target,$token) = @_;
     my $currentstring = '';
     if ($target eq 'web') {
 	$currentstring = $token->[4];     
     } elsif ($target eq 'tex') {
-	$currentstring = '\begin{description}';  
+	$currentstring = '\begin{description}';
+	@Apache::londefdef::description=();
+	$Apache::londefdef::DD_redirection=0;
+	$Apache::londefdef::DT_redirection=0;
     } 
     return $currentstring;
 }
 
 sub end_dl {
-    my ($target,$token) = @_;
+    my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';
     if ($target eq 'web') {
 	$currentstring = $token->[2];     
     } elsif ($target eq 'tex') {
-	$currentstring = '\end{description}';  
+	if ($Apache::londefdef::DT_redirection) {
+	    my $data=&item_cleanup;
+	    push @Apache::londefdef::description,'\item['.$data.']';
+	    $Apache::londefdef::DT_redirection=0;
+	} elsif ($Apache::londefdef::DD_redirection) {
+	    $Apache::londefdef::description[-1].=&Apache::lonxml::endredirection();
+	}
+	foreach my $element (@Apache::londefdef::description) {
+	    $currentstring.=' '.$element.' ';
+	}
+	@Apache::londefdef::description=();
+	$currentstring.='\end{description}';  
     } 
     return $currentstring;
 }
 
-#-- <dt> tag
+#-- <dt> tag (end tag optional)
 sub start_dt {
-    my ($target,$token) = @_;
-    my $currentstring = '';
+    my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
+    my $currentstring='';
     if ($target eq 'web') {
 	$currentstring = $token->[4];     
     } elsif ($target eq 'tex') {
-	$currentstring = '\item[';  
+	if ($Apache::londefdef::DT_redirection) {
+	    my $data=&item_cleanup;
+	    push @Apache::londefdef::description,'\item['.$data.']';
+	    $Apache::londefdef::DT_redirection=0;
+	} elsif ($Apache::londefdef::DD_redirection) {
+	    $Apache::londefdef::description[-1].=&Apache::lonxml::endredirection();
+	    $Apache::londefdef::DD_redirection=0;
+	}
+	&Apache::lonxml::startredirection();
+	$Apache::londefdef::DT_redirection=1;
     } 
     return $currentstring;
 }
 
 sub end_dt {
-    my ($target,$token) = @_;
+    my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';
     if ($target eq 'web') {
 	$currentstring = $token->[2];    
     } elsif ($target eq 'tex') {
-	$currentstring = ']';  
+	my $data=&item_cleanup;
+	push @Apache::londefdef::description,'\item['.$data.']';
+	$Apache::londefdef::DT_redirection=0;
     } 
     return $currentstring;
 }
 
-#-- <dd> tag
+sub item_cleanup {
+    my $item=&Apache::lonxml::endredirection();
+    $item=~s/\\begin{center}//g;
+    $item=~s/\\end{center}//g;
+    return $item;
+}
+
+#-- <dd> tag (end tag optional)
 sub start_dd {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';
     if ($target eq 'web') {
 	$currentstring = $token->[4];     
     } elsif ($target eq 'tex') {
-	if ($$tagstack[-2] eq 'dl') {
-	    $currentstring = ' \item [] ';  
-	} elsif ($$tagstack[-2] eq 'dt') {
-	    $currentstring = ']'; 
+	if ($Apache::londefdef::DT_redirection) {
+	    my $data=&item_cleanup;
+	    push @Apache::londefdef::description,'\item['.$data.']';
+	    $Apache::londefdef::DT_redirection=0;
 	}
+	$Apache::londefdef::DD_redirection=1;
+	&Apache::lonxml::startredirection();
     } 
     return $currentstring;
 }
 
 sub end_dd {
-    my ($target,$token) = @_;
+    my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';
     if ($target eq 'web') {
 	$currentstring = $token->[2];    
-    } 
+    }  elsif ($target eq 'tex') {
+	$Apache::londefdef::description[-1].=&Apache::lonxml::endredirection();
+	$Apache::londefdef::DD_redirection=0;
+    }
     return $currentstring;
 }
 
-#-- <table> tag
+#-- <table> tag (end tag required)
 sub start_table {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $textwidth='';
@@ -1738,7 +1853,7 @@ sub end_table {
 	$needed=$#length_row_final-$needed+1;
 	for (my $jn=0;$jn<=$#length_row_final;$jn++) {
 	    if ($length_row_final[$jn]==0) {
-		if ($length_raw_row[$jn]<$available_length/3) {
+		if ($length_raw_row[$jn]<$available_length) {
 		    $length_row_final[$jn]=$length_raw_row[$jn];
 		    $available_length=$available_length-$length_raw_row[$jn];
 		    $needed--;
@@ -1774,7 +1889,7 @@ sub end_table {
     return $currentstring;
 }
 
-#-- <tr> tag
+#-- <tr> tag (end tag optional)
 sub start_tr {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';
@@ -1797,72 +1912,121 @@ sub start_tr {
 }
         
 sub end_tr {
-    my ($target,$token) = @_;
+    my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';
     if ($target eq 'web') {
 	$currentstring = $token->[2];     
     } elsif ($target eq 'tex') {
+	if ($Apache::londefdef::TD_redirection) {
+	    &end_td_tex($parstack,$parser,$safeeval);    
+	}
 	push @{ $Apache::londefdef::table[-1]{'TeXlengthrow'} },$Apache::londefdef::table[-1]{'TeXlength'};
 	push @{ $Apache::londefdef::table[-1]{'lengthrow'} },$Apache::londefdef::table[-1]{'length'};
     }
     return $currentstring;
 }
 
-#-- <td> tag
+#-- <td> tag (end tag optional)
 sub start_td {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';
     if ($target eq 'web') {
 	$currentstring = $token->[4];     
     } elsif ($target eq 'tex') {
-	my $what_to_push = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
-	if ($what_to_push eq '') {
-	    $what_to_push = substr($Apache::londefdef::table[-1]{'rows'}[0],0,1);;
-	}
-	push @{ $Apache::londefdef::table[-1]{'columns'} }, $what_to_push;
-	$Apache::londefdef::table[-1]{'counter_columns'}++;
-	&Apache::lonxml::startredirection();
+	$Apache::londefdef::TD_redirection = 1;
+	&tag_check('tr','td',$tagstack,$parstack,$parser,$safeeval);
     } 
     return $currentstring;
 }   
-     
+    
+sub tag_check {
+    my ($good_tag,$bad_tag,$tagstack,$parstack,$parser,$safeeval) = @_;
+    my @ar=@$parstack; 
+    for (my $i=$#ar-1;$i>=0;$i--) {
+	if (lc($$tagstack[$i]) eq $good_tag) {
+	    &start_td_tex($parstack,$parser,$safeeval);
+	    last;
+	} elsif (lc($$tagstack[$i]) eq $bad_tag) {
+	    splice @ar, $i+1;
+	    &end_td_tex(\@ar,$parser,$safeeval);
+	    &start_td_tex($parstack,$parser,$safeeval);
+	    last;
+	}
+    }
+    return '';
+}
+ 
+sub start_td_tex {
+    my ($parstack,$parser,$safeeval) = @_;
+    my $what_to_push = substr(&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1),0,1);
+    if ($what_to_push eq '') {
+	$what_to_push = substr($Apache::londefdef::table[-1]{'rows'}[0],0,1);;
+    }
+    push @{ $Apache::londefdef::table[-1]{'columns'} }, $what_to_push;
+    $Apache::londefdef::table[-1]{'counter_columns'}++;
+    &Apache::lonxml::startredirection();
+    return '';
+}
+
+sub end_td_tex {
+    my ($parstack,$parser,$safeeval) = @_;
+    my $current_row = $Apache::londefdef::table[-1]{'row_number'};
+    my $data=&Apache::lonxml::endredirection();
+    my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
+    if (defined $TeXwidth) {		
+	my $current_length=&recalc($TeXwidth);
+	$current_length=~/(\d+)/;
+	$Apache::londefdef::table[-1]{'TeXlength'} .= $1.',';
+	$Apache::londefdef::table[-1]{'length'} .= '0,';
+    } else {
+	if ($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
+	    my $current_length=&recalc($1);
+	    $current_length=~/(\d+\.?\d*)/;
+	    $Apache::londefdef::table[-1]{'TeXlength'} .= $1.',';
+	    $Apache::londefdef::table[-1]{'length'} .= '0,';
+	} else {  
+	    $data=~s/^\s+(\S.*)/$1/; 
+	    $data=~s/(.*\S)\s+$/$1/;
+	    $data=~s/(\s)+/$1/;
+	    my $current_length=0;
+	    if ($data=~/\\vskip/) {
+                my $newdata=$data;
+		$newdata=~s/\\vskip \d*\.?\d*\s*mm/THISISJUSTTEMPORARYSEPARATOR/g;
+		my @newdata=split(/THISISJUSTTEMPORARYSEPARATOR/,$newdata);
+		foreach my $elementdata (@newdata) {
+		    $elementdata=~s/^\s+(\S.*)/$1/; 
+		    $elementdata=~s/(.*\S)\s+$/$1/;
+		    $elementdata=~s/(\s)+/$1/;
+		    my $lengthnewdata=1.8*length($elementdata);
+		    if ($lengthnewdata>$current_length) {$current_length=$lengthnewdata;}
+		}
+	    } else {
+		$current_length=1.8*length($data);
+	    }
+	    $Apache::londefdef::table[-1]{'length'} .= $current_length.',';
+	    $Apache::londefdef::table[-1]{'TeXlength'} .= '0,';
+	}        
+    }
+	for (my $in=0; $in<=$#{$Apache::londefdef::table[-1]{'include'}};$in++) {         
+	    $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
+	}
+    @{ $Apache::londefdef::table[-1]{'rowdata'} }[$current_row] .= '\parbox{TOBECHANGEDONNUMBER}{'.$data.'} '.$Apache::londefdef::table[-1]{'vinc'};
+    return'';
+}
+
 sub end_td {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';
     if ($target eq 'web') {
 	$currentstring = $token->[2];     
     } elsif ($target eq 'tex') {
-	my $current_row = $Apache::londefdef::table[-1]{'row_number'};
-	my $data=&Apache::lonxml::endredirection();
-	my $TeXwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
-	if (defined $TeXwidth) {		
-	    my $current_length=&recalc($TeXwidth);
-	    $current_length=~/(\d+)/;
-	    $Apache::londefdef::table[-1]{'TeXlength'} .= $1.',';
-	    $Apache::londefdef::table[-1]{'length'} .= '0,';
-	} else {
-	    if ($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
-		my $current_length=&recalc($1);
-		$current_length=~/(\d+\.?\d*)/;
-		$Apache::londefdef::table[-1]{'TeXlength'} .= $1.',';
-		$Apache::londefdef::table[-1]{'length'} .= '0,';
-	    } else {  
-		$data=~s/^\s+(\S.*)/$1/;
-		$data=~s/(.*\S)\s+$/$1/;
-		my $current_length=2*length($data);
-		$Apache::londefdef::table[-1]{'length'} .= $current_length.',';
-		$Apache::londefdef::table[-1]{'TeXlength'} .= '0,';
-	    }        
-	}
-	for (my $in=0; $in<=$#{$Apache::londefdef::table[-1]{'include'}};$in++) {         
-	    $data=~s/\\keephidden\{NEW TABLE ENTRY\}/$Apache::londefdef::table[-1]{'include'}[$in]/;
-	}
-	@{ $Apache::londefdef::table[-1]{'rowdata'} }[$current_row] .= '\parbox{TOBECHANGEDONNUMBER}{'.$data.'} '.$Apache::londefdef::table[-1]{'vinc'};
+        $Apache::londefdef::TD_redirection =0;
+	&end_td_tex($parstack,$parser,$safeeval);
     }
     return $currentstring;
 }
 
-#-- <th> tag
+#-- <th> tag (end tag optional)
 sub start_th {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';
@@ -1918,7 +2082,7 @@ sub end_th {
     }
     return $currentstring;
 }
-#-- <img> tag
+#-- <img> tag (end tag forbidden)
 sub start_img {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,
@@ -1928,10 +2092,9 @@ sub start_img {
     my $width_param = '';
     my $height_param = '';
     my $scaling = .3;
-    
     if ($target eq 'web') {
 	if ($ENV{'browser.imagesuppress'} ne 'on') {
-	    $currentstring = $token->[4];
+	    $currentstring.= $token->[4];
 	} else {
 	    my $alttag= &Apache::lonxml::get_param
 		('alt',$parstack,$safeeval,undef,1);
@@ -1939,12 +2102,11 @@ sub start_img {
 		$alttag=&Apache::lonmeta::alttag
 		    ($Apache::lonxml::pwd[-1],$src);
 	    }
-	    $currentstring='[IMAGE: '.$alttag.']';
+	    $currentstring.='[IMAGE: '.$alttag.']';
 	}
     } elsif ($target eq 'tex') {
 	$src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
 	&image_replication($src);
-	
 	#if original gif/jpg/png file exist do following:
 	if (-e $src) {          
 	    #defines the default size of image
@@ -1969,6 +2131,7 @@ sub start_img {
 	    } elsif ($width ne '') {
 		$width_param = $width*$scaling;      
 	    }
+	    if ($width_param > $ENV{'form.textwidth'}) {$width_param =0.95*$ENV{'form.textwidth'}}
 	    my $file;
 	    my $path;	
 	    if ($src =~ m!(.*)/([^/]*)$!) {
@@ -1999,7 +2162,9 @@ sub start_img {
 		    my $filename = "/home/httpd/prtspool/$ENV{'user.name'}_$ENV{'user.domain'}_printout.dat";
 		    $temp_file = Apache::File->new('>>'.$filename); 
 		    print $temp_file "$src\n";
-		    $currentstring .= '\vskip 1 mm \graphicspath{{/home/httpd/prtspool/}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
+		    $newsrc=~s/\/home\/httpd\/html\/res//;
+		    $newsrc=~s/\/([^\/]+)\.(ps|eps)/\//;
+		    $currentstring .= '\vskip 1 mm \graphicspath{{/home/httpd/prtspool'.$newsrc.'}}\includegraphics[width='.$width_param.' mm]{'.$file.'} ';
 		}
 	    }
 	} else {
@@ -2031,7 +2196,7 @@ sub end_img {
     return $currentstring;
 }
 
-#-- <applet> tag
+#-- <applet> tag (end tag required)
 sub start_applet {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     
@@ -2056,7 +2221,16 @@ sub start_applet {
 	    $currentstring='[APPLET: '.$alttag.']';
 	}
     } elsif ($target eq 'tex') {
-	$currentstring = " \\begin{figure} ";
+	my $alttag= &Apache::lonxml::get_param('alt',$parstack,
+					       $safeeval,undef,1);
+	unless ($alttag) {
+	    my $code=&Apache::lonxml::get_param('code',$parstack,$safeeval,
+						undef,1);
+	    $alttag=&Apache::lonmeta::alttag($Apache::lonxml::pwd[-1],
+					     $code);
+	}
+	$currentstring.='\begin{center} \fbox{Java Applet: '.$alttag.
+	    '.}\end{center}';
     } 
     return $currentstring;
 }
@@ -2067,12 +2241,11 @@ sub end_applet {
     if ($target eq 'web') {
 	$currentstring = $token->[2];
     } elsif ($target eq 'tex') {
-	$currentstring = " \\end{figure}";
     } 
     return $currentstring;
 }
 
-#-- <embed> tag
+#-- <embed> tag (end tag optional/required)
 sub start_embed {    
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $src=&Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
@@ -2090,7 +2263,6 @@ sub start_embed {
 	    $currentstring='[EMBED: '.$alttag.']';
 	}
     } elsif ($target eq 'tex') {
-	$currentstring = " \\begin{figure} ";  
     } 
     return $currentstring;
 }
@@ -2100,13 +2272,12 @@ sub end_embed {
     my $currentstring = '';
     if ($target eq 'web') {
 	$currentstring = $token->[2];     
-    } elsif ($target eq 'tex') {
-	$currentstring = " \\end{figure}";  
+    } elsif ($target eq 'tex') {  
     } 
     return $currentstring;
 }
 
-#-- <param> tag
+#-- <param> tag (end tag forbidden)
 sub start_param {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     if (&Apache::lonxml::get_param
@@ -2120,7 +2291,6 @@ sub start_param {
     if ($target eq 'web') {
 	$currentstring = $token->[4];     
     } elsif ($target eq 'tex') {
-	$currentstring = " \\begin{figure} ";  
     } 
     return $currentstring;
 }
@@ -2131,7 +2301,6 @@ sub end_param {
     if ($target eq 'web') {
 	$currentstring = $token->[2];     
     } elsif ($target eq 'tex') {
-	$currentstring = " \\end{figure}";  
     } 
     return $currentstring;
 }
@@ -2163,12 +2332,14 @@ sub end_allow {
     return '';
 }
 
-#-- Frames
+#-- Frames (end tag required)
+#-- <frameset>
 sub start_frameset {
     my ($target,$token) = @_;
     my $currentstring = '';
     if ($target eq 'web') { 
-	if (!$Apache::lonxml::registered) {
+	if (!$Apache::lonxml::registered &&
+	    $ENV{'request.state'} eq 'published') {
 	    $currentstring.='<head>'.
 		&Apache::lonmenu::registerurl(undef,$target).'</head>';
 	}
@@ -2208,7 +2379,30 @@ sub end_frameset {
     return $currentstring;
 }
 
-#-- <pre>
+#-- <xmp> (end tag required)
+sub start_xmp {
+    my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
+    my $currentstring = '';
+    if ($target eq 'web') {
+	$currentstring .= $token->[4];
+    } elsif ($target eq 'tex') {
+	$currentstring .= '\begin{verbatim}';
+    } 
+    return $currentstring;
+}
+
+sub end_xmp {
+    my ($target,$token) = @_;
+    my $currentstring = '';
+    if ($target eq 'web') {
+	$currentstring .= $token->[2];
+    } elsif ($target eq 'tex') {
+	$currentstring .= '\end{verbatim}';
+    }
+    return $currentstring;
+}
+
+#-- <pre> (end tag required)
 sub start_pre {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';
@@ -2291,7 +2485,7 @@ sub end_blankspace {
     return $currentstring;
 }
 
-#-- <abbr> tag
+#-- <abbr> tag (end tag required)
 sub start_abbr {
     my ($target,$token) = @_;
     my $currentstring = '';
@@ -2310,7 +2504,7 @@ sub end_abbr {
     return $currentstring;
 }
 
-#-- <acronym> tag
+#-- <acronym> tag (end tag required)
 sub start_acronym {
     my ($target,$token) = @_;
     my $currentstring = '';
@@ -2329,7 +2523,7 @@ sub end_acronym {
     return $currentstring;
 }
 
-#-- <area> tag
+#-- <area> tag (end tag forbidden)
 sub start_area {
     my ($target,$token) = @_;
     my $currentstring = '';
@@ -2348,13 +2542,13 @@ sub end_area {
     return $currentstring;
 }
 
-#-- <base> tag
+#-- <base> tag (end tag forbidden)
 sub start_base {
     my ($target,$token) = @_;
     my $currentstring = '';
     if ($target eq 'web') {
 	$currentstring = $token->[4];     
-    } 
+    }
     return $currentstring;
 }
 
@@ -2367,7 +2561,7 @@ sub end_base {
     return $currentstring;
 }
 
-#-- <bdo> tag
+#-- <bdo> tag (end tag required)
 sub start_bdo {
     my ($target,$token) = @_;
     my $currentstring = '';
@@ -2386,7 +2580,7 @@ sub end_bdo {
     return $currentstring;
 }
 
-#-- <bgsound> tag
+#-- <bgsound> tag (end tag optional)
 sub start_bgsound {
     my ($target,$token) = @_;
     my $currentstring = '';
@@ -2405,7 +2599,7 @@ sub end_bgsound {
     return $currentstring;
 }
 
-#-- <blink> tag
+#-- <blink> tag (end tag required)
 sub start_blink {
     my ($target,$token) = @_;
     my $currentstring = '';
@@ -2424,7 +2618,7 @@ sub end_blink {
     return $currentstring;
 }
 
-#-- <blockquote> tag
+#-- <blockquote> tag (end tag required)
 sub start_blockquote {
     my ($target,$token) = @_;
     my $currentstring = '';
@@ -2443,7 +2637,7 @@ sub end_blockquote {
     return $currentstring;
 }
 
-#-- <button> tag
+#-- <button> tag (end tag required)
 sub start_button {
     my ($target,$token) = @_;
     my $currentstring = '';
@@ -2462,7 +2656,7 @@ sub end_button {
     return $currentstring;
 }
 
-#-- <caption> tag
+#-- <caption> tag (end tag required)
 sub start_caption {
     my ($target,$token) = @_;
     my $currentstring = '';
@@ -2481,7 +2675,7 @@ sub end_caption {
     return $currentstring;
 }
 
-#-- <col> tag
+#-- <col> tag (end tag forbdden)
 sub start_col {
     my ($target,$token) = @_;
     my $currentstring = '';
@@ -2500,7 +2694,7 @@ sub end_col {
     return $currentstring;
 }
 
-#-- <colgroup> tag
+#-- <colgroup> tag (end tag optional)
 sub start_colgroup {
     my ($target,$token) = @_;
     my $currentstring = '';
@@ -2519,7 +2713,7 @@ sub end_colgroup {
     return $currentstring;
 }
 
-#-- <del> tag
+#-- <del> tag (end tag required)
 sub start_del {
     my ($target,$token) = @_;
     my $currentstring = '';
@@ -2538,7 +2732,7 @@ sub end_del {
     return $currentstring;
 }
 
-#-- <fieldset> tag
+#-- <fieldset> tag (end tag required)
 sub start_fieldset {
     my ($target,$token) = @_;
     my $currentstring = '';
@@ -2557,7 +2751,7 @@ sub end_fieldset {
     return $currentstring;
 }
 
-#-- <frame> tag
+#-- <frame> tag (end tag forbidden)
 sub start_frame {
     my ($target,$token) = @_;
     my $currentstring = '';
@@ -2576,7 +2770,7 @@ sub end_frame {
     return $currentstring;
 }
 
-#-- <iframe> tag
+#-- <iframe> tag (end tag required)
 sub start_iframe {
     my ($target,$token) = @_;
     my $currentstring = '';
@@ -2595,7 +2789,7 @@ sub end_iframe {
     return $currentstring;
 }
 
-#-- <ins> tag
+#-- <ins> tag (end tag required)
 sub start_ins {
     my ($target,$token) = @_;
     my $currentstring = '';
@@ -2614,7 +2808,7 @@ sub end_ins {
     return $currentstring;
 }
 
-#-- <isindex> tag
+#-- <isindex> tag (end tag forbidden)
 sub start_isindex {
     my ($target,$token) = @_;
     my $currentstring = '';
@@ -2633,7 +2827,7 @@ sub end_isindex {
     return $currentstring;
 }
 
-#-- <keygen> tag
+#-- <keygen> tag (end tag forbidden)
 sub start_keygen {
     my ($target,$token) = @_;
     my $currentstring = '';
@@ -2671,7 +2865,7 @@ sub end_label {
     return $currentstring;
 }
 
-#-- <layer> tag
+#-- <layer> tag (end tag required)
 sub start_layer {
     my ($target,$token) = @_;
     my $currentstring = '';
@@ -2690,7 +2884,7 @@ sub end_layer {
     return $currentstring;
 }
 
-#-- <legend> tag
+#-- <legend> tag (end tag required)
 sub start_legend {
     my ($target,$token) = @_;
     my $currentstring = '';
@@ -2709,7 +2903,7 @@ sub end_legend {
     return $currentstring;
 }
 
-#-- <link> tag
+#-- <link> tag (end tag forbidden)
 sub start_link {
     my ($target,$token) = @_;
     my $currentstring = '';
@@ -2728,7 +2922,7 @@ sub end_link {
     return $currentstring;
 }
 
-#-- <marquee> tag
+#-- <marquee> tag (end tag optional)
 sub start_marquee {
     my ($target,$token) = @_;
     my $currentstring = '';
@@ -2747,8 +2941,8 @@ sub end_marquee {
     return $currentstring;
 }
 
-#-- <malticol> tag
-sub start_malticol {
+#-- <multicol> tag (end tag required)
+sub start_multicol {
     my ($target,$token) = @_;
     my $currentstring = '';
     if ($target eq 'web') {
@@ -2757,7 +2951,7 @@ sub start_malticol {
     return $currentstring;
 }
 
-sub end_malticol {
+sub end_multicol {
     my ($target,$token) = @_;
     my $currentstring = '';
     if ($target eq 'web') {
@@ -2766,13 +2960,15 @@ sub end_malticol {
     return $currentstring;
 }
 
-#-- <nobr> tag
+#-- <nobr> tag (end tag required)
 sub start_nobr {
     my ($target,$token) = @_;
     my $currentstring = '';
     if ($target eq 'web') {
 	$currentstring = $token->[4];     
-    } 
+    }  elsif ($target eq 'tex') {
+	$currentstring='\mbox{';
+    }
     return $currentstring;
 }
 
@@ -2781,11 +2977,13 @@ sub end_nobr {
     my $currentstring = '';
     if ($target eq 'web') {
 	$currentstring = $token->[2];    
-    } 
+    }   elsif ($target eq 'tex') {
+	$currentstring='}';
+    }
     return $currentstring;
 }
 
-#-- <noembed> tag
+#-- <noembed> tag (end tag required)
 sub start_noembed {
     my ($target,$token) = @_;
     my $currentstring = '';
@@ -2804,7 +3002,7 @@ sub end_noembed {
     return $currentstring;
 }
 
-#-- <noframes> tag
+#-- <noframes> tag (end tag required)
 sub start_noframes {
     my ($target,$token) = @_;
     my $currentstring = '';
@@ -2823,7 +3021,7 @@ sub end_noframes {
     return $currentstring;
 }
 
-#-- <nolayer> tag
+#-- <nolayer> tag (end tag required)
 sub start_nolayer {
     my ($target,$token) = @_;
     my $currentstring = '';
@@ -2842,7 +3040,7 @@ sub end_nolayer {
     return $currentstring;
 }
 
-#-- <noscript> tag
+#-- <noscript> tag (end tag required)
 sub start_noscript {
     my ($target,$token) = @_;
     my $currentstring = '';
@@ -2861,7 +3059,7 @@ sub end_noscript {
     return $currentstring;
 }
 
-#-- <object> tag
+#-- <object> tag (end tag required)
 sub start_object {
     my ($target,$token) = @_;
     my $currentstring = '';
@@ -2880,7 +3078,7 @@ sub end_object {
     return $currentstring;
 }
 
-#-- <optgroup> tag
+#-- <optgroup> tag (end tag required)
 sub start_optgroup {
     my ($target,$token) = @_;
     my $currentstring = '';
@@ -2899,13 +3097,15 @@ sub end_optgroup {
     return $currentstring;
 }
 
-#-- <samp> tag
+#-- <samp> tag (end tag required)
 sub start_samp {
     my ($target,$token) = @_;
     my $currentstring = '';
     if ($target eq 'web') {
 	$currentstring = $token->[4];     
-    } 
+    } elsif ($target eq 'tex') {
+	$currentstring='\texttt{';
+    }
     return $currentstring;
 }
 
@@ -2914,7 +3114,9 @@ sub end_samp {
     my $currentstring = '';
     if ($target eq 'web') {
 	$currentstring = $token->[2];    
-    } 
+    } elsif ($target eq 'tex') {
+	$currentstring='}';
+    }
     return $currentstring;
 }
 
@@ -2937,7 +3139,7 @@ sub end_server {
     return $currentstring;
 }
 
-#-- <spacer> tag
+#-- <spacer> tag (end tag forbidden)
 sub start_spacer {
     my ($target,$token) = @_;
     my $currentstring = '';
@@ -2956,7 +3158,7 @@ sub end_spacer {
     return $currentstring;
 }
 
-#-- <span> tag
+#-- <span> tag (end tag required)
 sub start_span {
     my ($target,$token) = @_;
     my $currentstring = '';
@@ -2975,7 +3177,7 @@ sub end_span {
     return $currentstring;
 }
 
-#-- <tbody> tag
+#-- <tbody> tag (end tag optional)
 sub start_tbody {
     my ($target,$token) = @_;
     my $currentstring = '';
@@ -2994,7 +3196,7 @@ sub end_tbody {
     return $currentstring;
 }
 
-#-- <tfoot> tag
+#-- <tfoot> tag (end tag optional)
 sub start_tfoot {
     my ($target,$token) = @_;
     my $currentstring = '';
@@ -3013,7 +3215,7 @@ sub end_tfoot {
     return $currentstring;
 }
 
-#-- <thead> tag
+#-- <thead> tag (end tag optional)
 sub start_thead {
     my ($target,$token) = @_;
     my $currentstring = '';
@@ -3038,7 +3240,9 @@ sub start_var {
     my $currentstring = '';
     if ($target eq 'web') {
 	$currentstring = $token->[4];     
-    } 
+    } elsif ($target eq 'tex') {
+	$currentstring = '\textit{'; 
+    }
     return $currentstring;
 }
 
@@ -3046,12 +3250,14 @@ sub end_var {
     my ($target,$token) = @_;
     my $currentstring = '';
     if ($target eq 'web') {
-	$currentstring = $token->[2];    
+	$currentstring = $token->[2];
+    } elsif ($target eq 'tex') {
+	$currentstring = '}'; 
     } 
     return $currentstring;
 }
 
-#-- <wbr> tag
+#-- <wbr> tag (end tag forbidden)
 sub start_wbr {
     my ($target,$token) = @_;
     my $currentstring = '';
@@ -3070,7 +3276,6 @@ sub end_wbr {
     return $currentstring;
 }
 
-
 #-- <hideweboutput> tag
 sub start_hideweboutput {
     my ($target,$token) = @_;