--- loncom/xml/londefdef.pm	2003/03/18 15:32:15	1.122
+++ loncom/xml/londefdef.pm	2003/10/10 19:05:31	1.179
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # Tags Default Definition Module 
 #
-# $Id: londefdef.pm,v 1.122 2003/03/18 15:32:15 albertel Exp $
+# $Id: londefdef.pm,v 1.179 2003/10/10 19:05:31 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 
@@ -46,15 +45,17 @@ package Apache::londefdef;
 
 use Apache::lonnet();
 use strict;
-use Apache::lonxml();
+use Apache::lonxml;
 use Apache::File();
 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'));
+    &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);
     }
@@ -157,13 +164,17 @@ sub start_html {
 	    &Apache::lonxml::fontsettings();     
     } elsif ($target eq 'tex') {
 	@Apache::londefdef::table = ();
-	$currentstring .= '\documentclass[letterpaper]{article}
-                           \newcommand{\keephidden}[1]{}
+	$currentstring .= '\documentclass[letterpaper]{article}';
+	if ($ENV{'form.latex_type'}=~'batchmode') {$currentstring .='\batchmode';} 
+	$currentstring .= '\newcommand{\keephidden}[1]{}
                            \renewcommand{\deg}{$^{\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 $currentstring;
 }
@@ -318,7 +329,7 @@ sub start_title {
     if ($target eq 'web') {
 	$currentstring = $token->[4];     
     } elsif ($target eq 'tex') {
-	$currentstring .= '\keephidden{' 
+	$currentstring .= '\keephidden{Title of the document:  ' 
     }
     if ($target eq 'meta') {
 	$currentstring='<title>';
@@ -354,8 +365,7 @@ sub start_meta {
 	} else {
 	    $currentstring = $token->[4];
 	}
-    }
-    if ($target eq 'meta') {
+    } elsif ($target eq 'meta') {
 	unless (&Apache::lonxml::get_param
 		('http-equiv',$parstack,$safeeval,undef,1)) {
 	    my $name=$token->[2]->{'name'};
@@ -363,18 +373,38 @@ 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.'>';
+			'</'.$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);
+	my $name=&Apache::lonxml::get_param('name',$parstack,$safeeval);
+	if ((not defined $content) && (not defined $name)) {
+	    &Apache::lonxml::startredirection();
 	}
     }
     return $currentstring;
 }
 
 sub end_meta {
-    my ($target,$token,$tagstack,$parstack,$parser) = @_;
+    my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';
     if ($target eq 'web') {
 	my $args='';
@@ -382,7 +412,13 @@ sub end_meta {
 	if ($args ne '') {
 	    $currentstring = $token->[4];
 	}
-    } 
+    } elsif ($target eq 'tex') {
+	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;
 }
 
@@ -394,10 +430,15 @@ sub start_accessrule {
 	('effect',$parstack,$safeeval,undef,1);
     my $realm=&Apache::lonxml::get_param
 	('realm',$parstack,$safeeval,undef,1);
-    my $cont=&Apache::lonxml::get_param
-	('content',$parstack,$safeeval,undef,1);
-    $cont=~s/\s+//g;
-    $cont=~s/\W/\;/g;
+    my $role=&Apache::lonxml::get_param
+	('role',$parstack,$safeeval,undef,1);
+    $realm=~s/\s+//g;
+    $realm=~s/\//\_/g;
+    $realm=~s/^\_//;
+    $realm=~s/\W/\;/g;
+    $role=~s/\s+//g;
+    $role=~s/\//\_/g;
+    $role=~s/\W/\;/g;
     if ($target eq 'web') {
 	my $args='';
 	if ( $#$parstack > -1 ) { $args=$$parstack[$#$parstack]; }
@@ -408,7 +449,7 @@ sub start_accessrule {
 	}
     }
     if ($target eq 'meta') {
-	$currentstring='<rule>'.$eff.':'.$realm.':'.$cont.'</rule>';
+	$currentstring='<rule>'.$eff.':'.$realm.':'.$role.'</rule>';
     }
     return $currentstring;
 }
@@ -431,10 +472,37 @@ sub start_body {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';
     if ($target eq 'web') {
+	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) {
 	    $currentstring.='<head>'.
 		&Apache::lonmenu::registerurl(undef,$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) {
@@ -479,7 +547,7 @@ 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;
 }
@@ -492,9 +560,7 @@ sub start_center {
 	$currentstring = $token->[4];     
     } elsif ($target eq 'tex') {
 	$currentstring = '\begin{center}';  
-    }  elsif ($target eq 'latexsource') {
-	$currentstring = '\begin{center}';  
-    } 
+    }
     return $currentstring;
 }
 
@@ -505,9 +571,7 @@ sub end_center {
 	$currentstring = $token->[2];     
     } elsif ($target eq 'tex') {
 	$currentstring = '\end{center}';  
-    }  elsif ($target eq 'latexsource') {
-	$currentstring = '\end{center}';  
-    } 
+    }
     return $currentstring;
 }
 
@@ -519,8 +583,6 @@ sub start_b {
 	$currentstring = $token->[4];     
     } elsif ($target eq 'tex') {
 	$currentstring = '\textbf{';  
-    }  elsif ($target eq 'latexsource') {
-	$currentstring = '\textbf{';  
     } 
     return $currentstring;
 }
@@ -532,8 +594,6 @@ sub end_b {
 	$currentstring = $token->[2];     
     } elsif ($target eq 'tex') {
 	$currentstring = '}';  
-    } elsif ($target eq 'latexsource') {
-	$currentstring = '}';  
     } 
     return $currentstring;
 }
@@ -546,8 +606,6 @@ sub start_strong {
 	$currentstring = $token->[4];     
     } elsif ($target eq 'tex') {
 	$currentstring = '\textbf{';  
-    } elsif ($target eq 'latexsource') {
-	$currentstring = '\textbf{';  
     } 
     return $currentstring;
 }
@@ -560,20 +618,29 @@ sub end_strong {
 	$currentstring = $token->[2];     
     } elsif ($target eq 'tex') {
 	$currentstring = '}';  
-    }  elsif ($target eq 'latexsource') {
-	$currentstring = '}';  
-    } 
+    }
     return $currentstring;
 }
 
 #-- <h1> tag
 sub start_h1 {
-    my ($target,$token) = @_;
+    my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';
     if ($target eq 'web') {
 	$currentstring .= $token->[4];
     } elsif ($target eq 'tex') {
-	$currentstring .= '{\large \textbf{';
+	my $pre;
+	my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
+	if (($align eq 'center') || (not defined $align)) {
+	    $pre='\begin{center}';
+	} elsif ($align eq 'left') {
+	    $pre='\rlap{';
+	} elsif ($align eq 'right') {
+	    $pre=' \hfill \llap{';
+	}
+	my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
+	if (not defined $TeXsize) {$TeXsize="large";}
+	$currentstring .= $pre.'{\\'.$TeXsize.' \textbf{'; 
     } elsif ($target eq 'meta') {
 	$currentstring='<subject>';
 	&start_output();
@@ -582,12 +649,21 @@ sub start_h1 {
 }
 
 sub end_h1 {
-    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 $post;
+	my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
+	if (($align eq 'center') || (not defined $align)) {
+	    $post='\end{center}';
+	} elsif ($align eq 'left') {
+	    $post='} \hfill'.'\vskip 0 mm ';
+	} elsif ($align eq 'right') {
+	    $post='}'.'\vskip 0 mm ';
+	}
+	$currentstring .= '}}'.$post;
     } elsif ($target eq 'meta') {
 	&end_output();
 	$currentstring='</subject>';
@@ -597,115 +673,215 @@ sub end_h1 {
 
 #-- <h2> tag
 sub start_h2 {
-    my ($target,$token) = @_;
+    my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';
     if ($target eq 'web') {
 	$currentstring .= $token->[4];
     } elsif ($target eq 'tex') {
-	$currentstring .= '{\large \textbf{';
+	my $pre;
+	my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
+	if (($align eq 'center') || (not defined $align)) {
+	    $pre='\begin{center}';
+	} elsif ($align eq 'left') {
+	    $pre='\rlap{';
+	} elsif ($align eq 'right') {
+	    $pre=' \hfill \llap{';
+	}
+	my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
+	if (not defined $TeXsize) {$TeXsize="large";}
+	$currentstring .= $pre.'{\\'.$TeXsize.' \textbf{'; 
     } 
     return $currentstring;
 }
 
 sub end_h2 {
-    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 $post;
+	my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
+	if (($align eq 'center') || (not defined $align)) {
+	    $post='\end{center}';
+	} elsif ($align eq 'left') {
+	    $post='} \hfill'.'\vskip 0 mm ';
+	} elsif ($align eq 'right') {
+	    $post='}'.'\vskip 0 mm ';
+	}
+	$currentstring .= '}}'.$post;
     } 
     return $currentstring;
 }
 
 #-- <h3> tag
 sub start_h3 {
-    my ($target,$token) = @_;
+    my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';
     if ($target eq 'web') {
 	$currentstring .= $token->[4];
     } elsif ($target eq 'tex') {
-	$currentstring .= '{\large \textbf{';
+	my $pre;
+	my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
+	if (($align eq 'center') || (not defined $align)) {
+	    $pre='\begin{center}';
+	} elsif ($align eq 'left') {
+	    $pre='\rlap{';
+	} elsif ($align eq 'right') {
+	    $pre=' \hfill \llap{';
+	}
+	my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
+	if (not defined $TeXsize) {$TeXsize="large";}
+	$currentstring .= $pre.'{\\'.$TeXsize.' \textbf{'; 
     } 
     return $currentstring;
 }
 
 sub end_h3 {
-    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 $post;
+	my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
+	if (($align eq 'center') || (not defined $align)) {
+	    $post='\end{center}';
+	} elsif ($align eq 'left') {
+	    $post='} \hfill'.'\vskip 0 mm ';
+	} elsif ($align eq 'right') {
+	    $post='}'.'\vskip 0 mm ';
+	}
+	$currentstring .= '}}'.$post;
     } 
     return $currentstring;
 }
 
 #-- <h4> tag
 sub start_h4 {
-    my ($target,$token) = @_;
+    my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';
     if ($target eq 'web') {
 	$currentstring .= $token->[4];
     } elsif ($target eq 'tex') {
-	$currentstring .= '{\large \textbf{';
+	my $pre;
+	my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
+	if (($align eq 'center') || (not defined $align)) {
+	    $pre='\begin{center}';
+	} elsif ($align eq 'left') {
+	    $pre='\rlap{';
+	} elsif ($align eq 'right') {
+	    $pre=' \hfill \llap{';
+	}
+	my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
+	if (not defined $TeXsize) {$TeXsize="large";}
+	$currentstring .= $pre.'{\\'.$TeXsize.' \textbf{'; 
     } 
     return $currentstring;
 }
 
 sub end_h4 {
-    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 $post;
+	my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
+	if (($align eq 'center') || (not defined $align)) {
+	    $post='\end{center}';
+	} elsif ($align eq 'left') {
+	    $post='} \hfill'.'\vskip 0 mm ';
+	} elsif ($align eq 'right') {
+	    $post='}'.'\vskip 0 mm ';
+	}
+	$currentstring .= '}}'.$post;
     } 
     return $currentstring;
 }
 
 #-- <h5> tag
 sub start_h5 {
-    my ($target,$token) = @_;
+    my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';
     if ($target eq 'web') {
 	$currentstring .= $token->[4];
     } elsif ($target eq 'tex') {
-	$currentstring .= '{\large \textbf{';
+	my $pre;
+	my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
+	if (($align eq 'center') || (not defined $align)) {
+	    $pre='\begin{center}';
+	} elsif ($align eq 'left') {
+	    $pre='\rlap{';
+	} elsif ($align eq 'right') {
+	    $pre=' \hfill \llap{';
+	}
+	my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
+	if (not defined $TeXsize) {$TeXsize="large";}
+	$currentstring .= $pre.'{\\'.$TeXsize.' \textbf{'; 
     } 
     return $currentstring;
 }
 
 sub end_h5 {
-    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 $post;
+	my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
+	if (($align eq 'center') || (not defined $align)) {
+	    $post='\end{center}';
+	} elsif ($align eq 'left') {
+	    $post='} \hfill'.'\vskip 0 mm ';
+	} elsif ($align eq 'right') {
+	    $post='}'.'\vskip 0 mm ';
+	}
+	$currentstring .= '}}'.$post;
     } 
     return $currentstring;
 }
 
 #-- <h6> tag
 sub start_h6 {
-    my ($target,$token) = @_;
+    my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';
     if ($target eq 'web') {
 	$currentstring .= $token->[4];
     } elsif ($target eq 'tex') {
-	$currentstring .= '{\large \textbf{';
+	my $pre;
+	my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
+	if (($align eq 'center') || (not defined $align)) {
+	    $pre='\begin{center}';
+	} elsif ($align eq 'left') {
+	    $pre='\rlap{';
+	} elsif ($align eq 'right') {
+	    $pre=' \hfill \llap{';
+	}
+	my $TeXsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval,undef,0);
+	if (not defined $TeXsize) {$TeXsize="large";}
+	$currentstring .= $pre.'{\\'.$TeXsize.' \textbf{'; 
     } 
     return $currentstring;
 }
 
 sub end_h6 {
-    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 $post;
+	my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
+	if (($align eq 'center') || (not defined $align)) {
+	    $post='\end{center}';
+	} elsif ($align eq 'left') {
+	    $post='} \hfill'.'\vskip 0 mm ';
+	} elsif ($align eq 'right') {
+	    $post='}'.'\vskip 0 mm ';
+	}
+	$currentstring .= '}}'.$post;
     } 
     return $currentstring;
 }
@@ -717,10 +893,8 @@ sub start_cite {
     if ($target eq 'web') {
 	$currentstring .= $token->[4];
     } elsif ($target eq 'tex') {
-	$currentstring .= "\\textit{";
-    }  elsif ($target eq 'latexsource') {
-	$currentstring .= "\\textit{";
-    } 
+	$currentstring .= '\textit{';
+    }
     return $currentstring;
 }
 
@@ -730,10 +904,8 @@ sub end_cite {
     if ($target eq 'web') {
 	$currentstring .= $token->[2];
     } elsif ($target eq 'tex') {
-	$currentstring .= "}";
-    }  elsif ($target eq 'latexsource') {
-	$currentstring .= "}";
-    } 
+	$currentstring .= '}';
+    }
     return $currentstring;
 }
 
@@ -745,9 +917,7 @@ sub start_i {
 	$currentstring .= $token->[4];
     } elsif ($target eq 'tex') {
 	$currentstring .= '\textit{';
-    }  elsif ($target eq 'latexsource') {
-	$currentstring .= '\textit{';
-    } 
+    }
     return $currentstring;
 }
 
@@ -758,8 +928,6 @@ sub end_i {
 	$currentstring .= $token->[2];
     } elsif ($target eq 'tex') {
 	$currentstring .= '}';
-    } elsif ($target eq 'latexsource') {
-	$currentstring .= '}';
     } 
     return $currentstring;
 }
@@ -771,10 +939,8 @@ sub start_address {
     if ($target eq 'web') {
 	$currentstring .= $token->[4];
     } elsif ($target eq 'tex') {
-	$currentstring .= "\\textit{";
-    } elsif ($target eq 'latexsource') {
-	$currentstring .= "\\textit{";
-    } 
+	$currentstring .= '\textit{';
+    }
     return $currentstring;
 }
 
@@ -784,9 +950,7 @@ sub end_address {
     if ($target eq 'web') {
 	$currentstring .= $token->[2];
     } elsif ($target eq 'tex') {
-	$currentstring .= "}";
-    } elsif ($target eq 'latexsource') {
-	$currentstring .= "}";
+	$currentstring .= '}';
     }
     return $currentstring;
 }
@@ -798,9 +962,7 @@ sub start_dfn {
     if ($target eq 'web') {
 	$currentstring .= $token->[4];
     } elsif ($target eq 'tex') {
-	$currentstring .= "\\textit{";
-    } elsif ($target eq 'latexsource') {
-	$currentstring .= "\\textit{";
+	$currentstring .= '\textit{';
     } 
     return $currentstring;
 }
@@ -811,10 +973,8 @@ sub end_dfn {
     if ($target eq 'web') {
 	$currentstring .= $token->[2];
     } elsif ($target eq 'tex') {
-	$currentstring .= "}";
-    } elsif ($target eq 'latexsource') {
-	$currentstring .= "}";
-    } 
+	$currentstring .= '}';
+    }
     return $currentstring;
 }
 
@@ -826,9 +986,7 @@ sub start_tt {
 	$currentstring .= $token->[4];
     } elsif ($target eq 'tex') {
 	$currentstring .= '\texttt{';
-    } elsif ($target eq 'latexsource') {
-	$currentstring .= '\texttt{';
-    } 
+    }
     return $currentstring;
 }
 
@@ -839,8 +997,6 @@ sub end_tt {
 	$currentstring .= $token->[2];
     } elsif ($target eq 'tex') {
 	$currentstring .= '}';
-    } elsif ($target eq 'latexsource') {
-	$currentstring .= '}';
     }
     return $currentstring;
 }
@@ -852,10 +1008,8 @@ sub start_kbd {
     if ($target eq 'web') {
 	$currentstring .= $token->[4];
     } elsif ($target eq 'tex') {
-	$currentstring .= "\\texttt";
-    } elsif ($target eq 'latexsource') {
-	$currentstring .= "\\texttt{";
-    } 
+	$currentstring .= '\texttt{';
+    }
     return $currentstring;
 }
 
@@ -865,10 +1019,8 @@ sub end_kbd {
     if ($target eq 'web') {
 	$currentstring .= $token->[2];
     } elsif ($target eq 'tex') {
-	$currentstring .= "}";
-    } elsif ($target eq 'latexsource') {
-	$currentstring .= "}";
-    } 
+	$currentstring .= '}';
+    }
     return $currentstring;
 }
 
@@ -903,9 +1055,7 @@ sub start_em {
 	$currentstring .= $token->[4];
     } elsif ($target eq 'tex') {
 	$currentstring .= '\emph{';
-    } elsif ($target eq 'latexsource') {
-	$currentstring .= '\emph{';
-    } 
+    }
     return $currentstring;
 }
 
@@ -916,9 +1066,7 @@ sub end_em {
 	$currentstring .= $token->[2];
     } elsif ($target eq 'tex') {
 	$currentstring .= '}';
-    } elsif ($target eq 'latexsource') {
-	$currentstring .= '}';
-    }  
+    } 
     return $currentstring;
 }
 
@@ -929,9 +1077,7 @@ sub start_q {
     if ($target eq 'web') {
 	$currentstring .= $token->[4];
     } elsif ($target eq 'tex') {
-	$currentstring .= "\\emph{";
-    }  elsif ($target eq 'latexsource') {
-	$currentstring .= "\\emph{";
+	$currentstring .= '\emph{';
     }
     return $currentstring;
 }
@@ -942,24 +1088,22 @@ sub end_q {
     if ($target eq 'web') {
 	$currentstring .= $token->[2];
     } elsif ($target eq 'tex') {
-	$currentstring .= "}";
-    } elsif ($target eq 'latexsource') {
-	$currentstring .= "}";
-    }  
+	$currentstring .= '}';
+    } 
     return $currentstring;
 }
 
 #-- <p> tag
 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') {
-	$currentstring .= '{\par ';
-    } elsif ($target eq 'latexsource') {
-	$currentstring .= '{\par ';
-    } 
+	my $signal=1;
+	foreach my $tag (@$tagstack) {if (lc($tag) eq 'b') {$signal=0;}}
+	if ($signal) {$currentstring .= '\par ';}
+    }
     return $currentstring;
 }
 
@@ -968,10 +1112,6 @@ sub end_p {
     my $currentstring = '';
     if ($target eq 'web') {
 	$currentstring .= $token->[2];
-    } elsif ($target eq 'tex') {
-	$currentstring .= '}';
-    } elsif ($target eq 'latexsource') {
-	$currentstring .= '}';
     }
     return $currentstring;
 }
@@ -984,11 +1124,9 @@ sub start_br {
 	$currentstring .= $token->[4];
     } elsif ($target eq 'tex') {
 	if ($$tagstack[-2] ne 'sub' && $$tagstack[-2] ne 'sup') {
-	    $currentstring .= '\vskip 0.2 mm';
+	    $currentstring .= '\vskip 0.2 mm ';
 	}
-    } elsif ($target eq 'latexsource') {
-	$currentstring .= '\\';
-    } 
+    }
     return $currentstring;
 }
 
@@ -1008,10 +1146,8 @@ sub start_big {
     if ($target eq 'web') {
 	$currentstring .= $token->[4];
     } elsif ($target eq 'tex') {
-	$currentstring .= '\large{';
-    } elsif ($target eq 'latexsource') {
-	$currentstring .= '{\Large ';
-    }  
+	$currentstring .= '{\large ';
+    } 
     return $currentstring;
 }
 
@@ -1022,8 +1158,6 @@ sub end_big {
 	$currentstring .= $token->[2];
     } elsif ($target eq 'tex') {
 	$currentstring .= '}';
-    } elsif ($target eq 'latexsource') {
-	$currentstring .= '}';
     }
     return $currentstring;
 }
@@ -1036,9 +1170,7 @@ sub start_small {
 	$currentstring .= $token->[4];
     } elsif ($target eq 'tex') {
 	$currentstring .= '{\footnotesize ';
-    } elsif ($target eq 'latexsource') {
-	$currentstring .= '{\footnotesize ';
-    } 
+    }
     return $currentstring;
 }
 
@@ -1049,28 +1181,36 @@ sub end_small {
 	$currentstring .= $token->[2];
     } elsif ($target eq 'tex') {
 	$currentstring .= '}';
-    } elsif ($target eq 'latexsource') {
-	$currentstring .= '}';
     }
     return $currentstring;
 }
 
 #-- <basefont> tag
 sub start_basefont {
-    my ($target,$token) = @_;
+    my ($target,$token,$tagstack,$parstack,$parser,$safeeval)=@_;
     my $currentstring = '';
     if ($target eq 'web') {
 	$currentstring = $token->[4];     
-    } 
+    } elsif ($target eq 'tex') {
+	my $basesize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
+	if (defined $basesize) {
+	    $currentstring = '{\\'.$basesize.' ';
+	}
+    }
     return $currentstring;
 }
 
 sub end_basefont {
-    my ($target,$token) = @_;
+    my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';
     if ($target eq 'web') {
 	$currentstring = $token->[4];     
-    } 
+    } elsif ($target eq 'tex') {
+	my $basesize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
+	if (defined $basesize) {
+	    $currentstring = '}';
+	}
+    }
     return $currentstring;
 }
 
@@ -1080,9 +1220,19 @@ sub start_font {
     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);
+	if (defined $fontsize) {
+	    $currentstring = '{\\'.$fontsize.' ';
+	}
+    }
     return $currentstring;
 }
 
@@ -1093,7 +1243,12 @@ sub end_font {
 	my $face=&Apache::lonxml::get_param('face',$parstack,$safeeval);
 	if ($face=~/symbol/i) {$Apache::lonxml::prevent_entity_encode--;}
 	$currentstring = $token->[2];    
-    } 
+    }  elsif ($target eq 'tex') {
+	my $fontsize=&Apache::lonxml::get_param('TeXsize',$parstack,$safeeval);
+	if (defined $fontsize) {
+	    $currentstring = '}';
+	}
+    }
     return $currentstring;
 }
  
@@ -1197,12 +1352,31 @@ sub end_sup {
 
 #-- <hr> tag
 sub start_hr {
-    my ($target,$token) = @_;
+    my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';
     if ($target eq 'web') {
 	$currentstring .= $token->[4];
     } elsif ($target eq 'tex') {
-	$currentstring .= '\vskip 0 mm \noindent\makebox[\textwidth/2 ][b]{\hrulefill}\vskip 0 mm ';
+	my $LaTeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
+	if (defined $LaTeXwidth) {
+	    if ($LaTeXwidth=~/^%/) {
+		substr($LaTeXwidth,0,1)='';
+		$LaTeXwidth=($LaTeXwidth/100).'\textwidth';
+	    }
+	} else {
+	    $LaTeXwidth ='0.9\textwidth';
+	}
+	my ($pre,$post);
+	my $align=&Apache::lonxml::get_param('align',$parstack,$safeeval,undef,1);
+	if (($align eq 'center') || (not defined $align)) {
+	    $pre=''; $post='';
+	} elsif ($align eq 'left') {
+	    $pre='\rlap{'; $post='} \hfill';
+	} elsif ($align eq 'right') {
+	    $pre=' \hfill \llap{'; $post='}';
+	}
+	$currentstring .= ' \vskip 0 mm \noindent\makebox['.$LaTeXwidth.']{'.$pre.'\makebox['.
+                                    $LaTeXwidth.'][b]{\hrulefill}'.$post.'}\vskip 0 mm ';
     } 
     return $currentstring;
 }
@@ -1212,8 +1386,7 @@ sub end_hr {
     my $currentstring = '';
     if ($target eq 'web') {
 	$currentstring .= $token->[2];
-    } elsif ($target eq 'tex') {
-    } 
+    }
     return $currentstring;
 }
 
@@ -1238,50 +1411,50 @@ sub end_div {
 
 #-- <a> tag
 sub start_a {
-    my ($target,$token) = @_;
+    my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';
     if ($target eq 'web') {
 	$currentstring .= $token->[4];
     } elsif ($target eq 'tex') {
+	my $a=&Apache::lonxml::get_param('href',$parstack,$safeeval,undef,1);
+	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,$tagstack,$stackref) = @_;
+    my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';
     if ($target eq 'web') {
 	$currentstring .= $token->[2];
-    } elsif ($target eq 'tex') {
-	my  $tempor_var = $stackref->[$#$stackref];
-	if (index($tempor_var,'name') != -1 ) {
-	    $tempor_var =~ s/name=([^,]*),/$1/g;
-	} elsif (index($tempor_var,'href') != -1 ) {
-	    $tempor_var =~ s/href=([^,]*),/$1/g;
-	    $currentstring .= " \\ref{$tempor_var}";
-	}
     }
     return $currentstring;
 }
 
 #-- <li> tag
 sub start_li {
-    my ($target,$token,$tagstack,$stackref) = @_;
+    my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';
     if ($target eq 'web') {
 	$currentstring = $token->[4];     
     } elsif ($target eq 'tex') {
-	my  $tempor_var = $stackref->[$#$stackref];
-	if (index($tempor_var,'circle') != -1 ) {
-	    $currentstring .= " \\item[o] ";
-	} elsif (index($tempor_var,'square') != -1 ) {
-	    $currentstring .= " \\item[$\Box$] ";
-	} elsif ($tempor_var ne '') { 
-	    $_ = $tempor_var;
-	    m/my\s*([^=]*)=/;
-	    $currentstring .= " \\item[$1] ";
+	my  $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,1);
+	if ($type=~/circle/) {
+	    $currentstring .= ' \item[o] ';
+	} elsif ($type=~/square/) {
+	    $currentstring .= ' \item[$\Box$] ';
+	} elsif ($type ne '') { 
+	    $currentstring .= ' \item['.$type.'] ';
 	} else {
-	    $currentstring .= " \\item ";
+	    $currentstring .= ' \item ';
 	}  
     } 
     return $currentstring;
@@ -1324,12 +1497,29 @@ sub end_u {
 
 #-- <ul> tag
 sub start_ul {
-    my ($target,$token) = @_;
+    my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';
     if ($target eq 'web') {
 	$currentstring = $token->[4];     
     } elsif ($target eq 'tex') {
-	$currentstring = '\begin{itemize}';  
+	my $TeXtype=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
+	if ($TeXtype eq 'disc') {
+	    $currentstring .= ' \renewcommand{\labelitemi}{$\bullet$}
+                                \renewcommand{\labelitemii}{$\bullet$} 
+                                \renewcommand{\labelitemiii}{$\bullet$}
+                                \renewcommand{\labelitemiv}{$\bullet$}';
+	} elsif ($TeXtype eq 'circle') {
+	    $currentstring .= ' \renewcommand{\labelitemi}{$\circ$}
+                                \renewcommand{\labelitemii}{$\circ$} 
+                                \renewcommand{\labelitemiii}{$\circ$}
+                                \renewcommand{\labelitemiv}{$\circ$}';
+	} elsif ($TeXtype eq 'square') {
+	    $currentstring .= ' \renewcommand{\labelitemi}{$\diamond$}
+                                \renewcommand{\labelitemii}{$\diamond$} 
+                                \renewcommand{\labelitemiii}{$\diamond$}
+                                \renewcommand{\labelitemiv}{$\diamond$}';
+	}
+	$currentstring .= '\begin{itemize}';  
     } 
     return $currentstring;
 }
@@ -1340,7 +1530,10 @@ sub end_ul {
     if ($target eq 'web') {
 	$currentstring = $token->[2];     
     } elsif ($target eq 'tex') {
-	$currentstring = '\end{itemize}';  
+	$currentstring = '\end{itemize} \renewcommand{\labelitemi}{$\bullet$}
+                                \renewcommand{\labelitemii}{$\bullet$} 
+                                \renewcommand{\labelitemiii}{$\bullet$}
+                                \renewcommand{\labelitemiv}{$\bullet$}';  
     } 
     return $currentstring;
 }
@@ -1393,12 +1586,39 @@ sub end_dir {
 
 #-- <ol> tag
 sub start_ol {
-    my ($target,$token) = @_;
+    my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';
     if ($target eq 'web') {
 	$currentstring = $token->[4];     
     } elsif ($target eq 'tex') {
-	$currentstring = '\begin{enumerate}';  
+	my $type=&Apache::lonxml::get_param('type',$parstack,$safeeval,undef,0);
+	if ($type eq '1') {
+	    $currentstring .= ' \renewcommand{\labelenumi}{\arabic{enumi}.}
+                                \renewcommand{\labelenumii}{\arabic{enumii}.} 
+                                \renewcommand{\labelenumiii}{\arabic{enumiii}.}
+                                \renewcommand{\labelenumiv}{\arabic{enumiv}.}';
+	} elsif ($type eq 'A') {
+	    $currentstring .= ' \renewcommand{\labelenumi}{\Alph{enumi}.}
+                                \renewcommand{\labelenumii}{\Alph{enumii}.} 
+                                \renewcommand{\labelenumiii}{\Alph{enumiii}.}
+                                \renewcommand{\labelenumiv}{\Alph{enumiv}.}';
+	} elsif ($type eq 'a') {
+	    $currentstring .= ' \renewcommand{\labelenumi}{\alph{enumi}.}
+                                \renewcommand{\labelenumii}{\alph{enumii}.}
+                                \renewcommand{\labelenumiii}{\alph{enumiii}.}
+                                \renewcommand{\labelenumiv}{\alph{enumiv}.} ';
+	} elsif ($type eq 'i') {
+	    $currentstring .= ' \renewcommand{\labelenumi}{\roman{enumi}.}
+                                \renewcommand{\labelenumii}{\roman{enumii}.}
+                                \renewcommand{\labelenumiii}{\roman{enumiii}.}
+                                \renewcommand{\labelenumiv}{\roman{enumiv}.} ';
+	} elsif ($type eq 'I') {
+	    $currentstring .= ' \renewcommand{\labelenumi}{\Roman{enumi}.}
+                                \renewcommand{\labelenumii}{\Roman{enumii}.}
+                                \renewcommand{\labelenumiii}{\Roman{enumiii}.}
+                                \renewcommand{\labelenumiv}{\Roman{enumiv}.} ';
+	}
+	$currentstring .= '\begin{enumerate}';  
     } 
     return $currentstring;
 }
@@ -1409,7 +1629,10 @@ sub end_ol {
     if ($target eq 'web') {
 	$currentstring = $token->[2];     
     } elsif ($target eq 'tex') {
-	$currentstring = '\end{enumerate}';  
+	$currentstring = '\end{enumerate} \renewcommand{\labelenumi}{\arabic{enumi}.}
+                                          \renewcommand{\labelenumii}{\arabic{enumii}.}
+                                          \renewcommand{\labelenumiii}{\arabic{enumiii}.}
+                                          \renewcommand{\labelenumiv}{\arabic{enumiv}.}';  
     } 
     return $currentstring;
 }
@@ -1421,67 +1644,118 @@ sub start_dl {
     if ($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;
 }
 
+sub item_cleanup {
+    my $item=&Apache::lonxml::endredirection();
+    $item=~s/\\begin{center}//g;
+    $item=~s/\\end{center}//g;
+    return $item;
+}
+
 #-- <dd> tag
 sub start_dd {
-    my ($target,$token) = @_;
+    my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';
     if ($target eq 'web') {
 	$currentstring = $token->[4];     
+    } elsif ($target eq 'tex') {
+	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
 sub start_table {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
+    my $textwidth='';
+    if (not defined @Apache::londefdef::table) {
+	$textwidth=&recalc($ENV{'form.textwidth'});
+	$textwidth=~/(\d+\.?\d*)/;
+	$textwidth=0.95*$1;
+    } else {
+	$textwidth=&Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
+    }
     my $currentstring = '';
     if ($target eq 'web') {
 	$currentstring = $token->[4];     
@@ -1489,7 +1763,25 @@ sub start_table {
 	my $aa = {};
 	push @Apache::londefdef::table, $aa; 
 	$Apache::londefdef::table[-1]{'row_number'} = -1;
-	$Apache::londefdef::table[-1]{'output'} = ' \noindent \begin{tabular} ';
+        #table's width
+	my $TeXwidth = &Apache::lonxml::get_param('TeXwidth',$parstack,$safeeval,undef,0);
+	if (not defined $TeXwidth) {
+	    my $htmlwidth = &Apache::lonxml::get_param('width',$parstack,$safeeval,undef,1);
+	    if ($htmlwidth=~/%/) {
+		$htmlwidth=~/(\d+)/;
+		my $value=$1*$textwidth/100;
+		$Apache::londefdef::table[-1]{'width'}=$value;
+	    } else {
+		$Apache::londefdef::table[-1]{'width'}=$textwidth;
+	    }
+	} elsif ($TeXwidth=~/%/) {
+	    $TeXwidth=~/(\d+)/;
+	    my $value=$1*$textwidth/100;
+            $Apache::londefdef::table[-1]{'width'}=$value;
+	} else {
+	    $Apache::londefdef::table[-1]{'width'}=$textwidth;
+	}        
+        #table's border
 	my $border = &Apache::lonxml::get_param('border',$parstack,$safeeval,undef,1); 
 	unless (defined $border) { $border = 0; }
 	if ($border) { 
@@ -1501,13 +1793,8 @@ sub start_table {
 	    $Apache::londefdef::table[-1]{'vinc'} = '&'; 
 	    $Apache::londefdef::table[-1]{'vvinc'} = '';
 	}
-	my $width;
-	foreach my $key (keys(%{$token->[2]})) {
-	    if ($key =~ /^width$/i) {
-		$width = &Apache::lonxml::get_param($key,$parstack,$safeeval,undef,1);
-	    }
-	}
-	if (defined($width)) { $Apache::londefdef::table[-1]{'width'}=$width; }
+	$Apache::londefdef::table[-1]{'output'} = ' \noindent \begin{tabular} ';
+	$currentstring = '\keephidden{NEW TABLE ENTRY}';
     }
     return $currentstring;
 }
@@ -1522,113 +1809,76 @@ sub end_table {
 	my $output = '';
 	#construct header of the table
 	my $header_of_table = '{'.$Apache::londefdef::table[-1]{'vvinc'};
-	my $in;
-	for ($in=0;$in<=$Apache::londefdef::table[-1]{'counter_columns'};$in++) {
+	for (my $in=0;$in<=$Apache::londefdef::table[-1]{'counter_columns'};$in++) {
 	    $header_of_table .= $Apache::londefdef::table[-1]{'columns'}[$in].$Apache::londefdef::table[-1]{'vvinc'};
 	}
 	$header_of_table .= '}';
-	#fill the table
-	for ($in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
-	    $output .=  $Apache::londefdef::table[-1]{'rowdata'}[$in];
-	    chop $output;
-	    $output .= ' \\\\ ';
-	}
 	#define the length of the table cells
-	my @lengthforoutput = split(/,/,$Apache::londefdef::table[-1]{'lengthrow'}[0]);
-	my $how_many_columns = $#lengthforoutput + 1; #total number of columns in the table 
-	my $filled_columns = 0; #number of columns with information about width
-	my $available_space = ' ';
-	foreach my $tempo_length (@{ $Apache::londefdef::table[-1]{'lengthrow'} }) {
-	    my @length = split(/,/,$tempo_length);
-	    for (my $ico=0;$ico<=$#lengthforoutput;$ico++) {
-		$lengthforoutput[$ico] =~ m/(\d*\.?\d*)\s*(\w+)/;
-		my $old_value = $1;
-		my $old_unit = $2; 
-		if ($old_unit eq 'cm') { 
-		    $old_value = $old_value * 10;
-		} elsif ($old_unit eq 'in') { 
-		    $old_value = $old_value * 25.4;
-		} elsif ($old_unit eq 'pt') {
-		    $old_value = $old_value * 25.4/72.27;
-		} elsif ($old_unit eq 'pc') {
-		    $old_value = $old_value * 25.4/6.022;
-		}
-		$old_unit = 'mm';
-		$length[$ico] =~ m/(\d*\.?\d*)\s*(\w+)/;
-		my $new_value = $1;
-		my $new_unit = $2;
-		if ($new_unit eq 'cm') { 
-		    $new_value = $new_value * 10;
-		} elsif ($old_unit eq 'in') { 
-		    $new_value = $new_value * 25.4;
-		} elsif ($old_unit eq 'pt') {
-		    $new_value = $new_value * 25.4/72.27;
-		} elsif ($old_unit eq 'pc') {
-		    $new_value = $new_value * 25.4/6.022;
-		}
-		$new_unit = 'mm';
-		if ($old_value < $new_value) {
-		    $lengthforoutput[$ico] = $new_value.' mm';
-		} else {
-		    $lengthforoutput[$ico] = $old_value.' mm';
+	#always starts with TeXwidth (if defined everything else is ignored)
+	my @length_row_final = split(/,/,$Apache::londefdef::table[-1]{'TeXlengthrow'}[0]);
+	for (my $in=1;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
+	    my @length_row = split(/,/,$Apache::londefdef::table[-1]{'TeXlengthrow'}[$in]);
+	    for (my $jn=0;$jn<=$#length_row;$jn++) {
+		if ($length_row_final[$jn]<$length_row[$jn]) {$length_row_final[$jn]=$length_row[$jn];}
+	    }
+	}
+	#continues trying estimate the width of raw data
+	my @length_raw_row = split(/,/,$Apache::londefdef::table[-1]{'lengthrow'}[0]);
+	for (my $in=1;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
+	    my @length_row = split(/,/,$Apache::londefdef::table[-1]{'lengthrow'}[$in]);
+	    for (my $jn=0;$jn<=$#length_row;$jn++) {
+		if ($length_raw_row[$jn]<$length_row[$jn]) {$length_raw_row[$jn]=$length_row[$jn];}
+	    }
+	}
+        #comparing of TeXwidth and raw data width
+	my $available_length=$Apache::londefdef::table[-1]{'width'};
+	my $needed=0;
+	for (my $jn=0;$jn<=$#length_row_final;$jn++) {
+	    if ($length_row_final[$jn]!=0) {
+		$available_length=$available_length-$length_row_final[$jn];
+		$needed++;
+	    }
+	}
+	$needed=$#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) {
+		    $length_row_final[$jn]=$length_raw_row[$jn];
+		    $available_length=$available_length-$length_raw_row[$jn];
+		    $needed--;
 		}
 	    }
 	}
-	for (my $ico=0;$ico<=$#lengthforoutput;$ico++) {
-	    if (not $lengthforoutput[$ico]=~m/^\s*0\s*\w*\s*$/) {
-		$filled_columns++;
-		$available_space = $available_space.' - '.$lengthforoutput[$ico];
+	for (my $jn=0;$jn<=$#length_row_final;$jn++) {
+	    if ($length_row_final[$jn]==0) {
+		$length_row_final[$jn]=0.9*$available_length/$needed;
 	    }
 	}
-	my $temp_file;
-	my $filename = "/home/httpd/prtspool/$ENV{'user.name'}_$ENV{'user.domain'}_printout.tbl";
-	if (-e $filename) {
-	    $temp_file = Apache::File->new($filename); 
-	    my @tbl_file_content = <$temp_file>;
-	    my ($one,$two,$three) = split(/,/,$tbl_file_content[0]);
-	    $how_many_columns+=$one-1;
-	    $filled_columns+=$two;
-	    if($three=~/\S/) {$available_space = $available_space.' - '.$three;}
-	} else {
-	    $temp_file = Apache::File->new('>>'.$filename); 
-	}		
-	print $temp_file "$how_many_columns,$filled_columns,$available_space\n";
-	$output =~ s/\\parbox{TOBECHANGEDONNUMBER}{}/\\parbox{1 mm}{}/g;
-	$output =~ s/\\parbox{TOBECHANGEDONNUMBER}/\\parbox{\$SpacePerColumn}/g;
-	my @tagar = @$tagstack;
-	my $signature = 1;
-	for (my $ico=0;$ico<$#tagar;$ico++) {
-	    if ($tagar[$ico] eq 'table') { $signature = 0; }
-	}
-	if ($signature) {
-	    my $NumberEmptyLength = $how_many_columns - $filled_columns;		
-	    my $SpacePerColumn = '(\textwidth '.$available_space.')/'.$NumberEmptyLength;
-	    my $shorthand = ($filled_columns+1)*4;
-	    $output =~ s/\$SpacePerColumn/$SpacePerColumn - $shorthand mm/g;
-	}	
-	if ($how_many_columns==1) {
-	    #start of block with width correction for one column table
-	    $output=~s/^\s*\\parbox\{([^\}]*)\}/\\parbox\{\\textwidth - 1 cm\}/;
-	    #end of block with width correction for one column table
+	#fill the table
+	for (my $in=0;$in<=$Apache::londefdef::table[-1]{'row_number'};$in++) {
+	    for (my $jn=0;$jn<=$#length_row_final;$jn++) {
+		my $substituted=$length_row_final[$jn];
+		$Apache::londefdef::table[-1]{'rowdata'}[$in]=~s/TOBECHANGEDONNUMBER/$substituted mm/;
+	    }
+	    $output .=  $Apache::londefdef::table[-1]{'rowdata'}[$in];
+	    chop $output;
+	    $output .= ' \\\\ ';
 	}
 	$Apache::londefdef::table[-1]{'output'} .= $header_of_table.$output.$Apache::londefdef::table[-1]{'hinc'}.'\end{tabular}\vskip 0 mm ';
-	if ($#Apache::londefdef::table > 0) {
-	    $inmemory = $Apache::londefdef::table[-1]{'output'};
+	if ($#Apache::londefdef::table > 0) {	    
+	    my $inmemory = $Apache::londefdef::table[-1]{'output'};
 	    pop @Apache::londefdef::table;
-	    $Apache::londefdef::table[-1]{'rowdata'}[$Apache::londefdef::table[-1]{'row_number'}] .= $inmemory
+	    push @{$Apache::londefdef::table[-1]{'include'}}, $inmemory;
 	} else {
-	    $currentstring = $Apache::londefdef::table[-1]{'output'};
-	    $currentstring =~ s/\\\\\s+\\\\/\\\\/g; 
+	    $currentstring .= $Apache::londefdef::table[-1]{'output'};
 	    pop @Apache::londefdef::table;
-	    if (-e $filename) {
-		unlink $filename;
-	    }
+	    undef @Apache::londefdef::table;
 	}
     }
     return $currentstring;
 }
 
-#-- <tr> tag
+#-- <tr> tag (end tag optional)
 sub start_tr {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';
@@ -1644,68 +1894,128 @@ sub start_tr {
 	}
 	push ( @{ $Apache::londefdef::table[-1]{'rowdata'} }, $Apache::londefdef::table[-1]{'hinc'});
 	$Apache::londefdef::table[-1]{'counter_columns'} = -1;
-	$Apache::londefdef::table[-1]{'length'} = ''; 
+	$Apache::londefdef::table[-1]{'TeXlength'} = '';
+ 	$Apache::londefdef::table[-1]{'length'} = '';
     } 
     return $currentstring;
 }
         
 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) = @_;
+    my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';
-    my $tempolen = '';
     if ($target eq 'web') {
 	$currentstring = $token->[2];     
     } elsif ($target eq 'tex') {
-	my $current_row = $Apache::londefdef::table[-1]{'row_number'};
-	my $data=&Apache::lonxml::endredirection();
-	if ($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt))/) {
-	    $Apache::londefdef::table[-1]{'length'} .= $1.',';
-	    $tempolen = $1;         
-	} else {
-	    if (length($data)<5) {
-		$Apache::londefdef::table[-1]{'length'} .= '0 mm,';
-		$tempolen = '6 mm';
-	    } else {
-		$Apache::londefdef::table[-1]{'length'} .= '0 mm,';
-		$tempolen = 'TOBECHANGEDONNUMBER';
-	    }
-	}                                        
-	@{ $Apache::londefdef::table[-1]{'rowdata'} }[$current_row] .= '\parbox{'.$tempolen.'}{'.$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 = '';
@@ -1719,29 +2029,48 @@ sub start_th {
 	push @{ $Apache::londefdef::table[-1]{'columns'} }, $what_to_push;
 	$Apache::londefdef::table[-1]{'counter_columns'}++;
 	&Apache::lonxml::startredirection();
-	;
     } 
     return $currentstring;
-}
-        
+}   
+     
 sub end_th {
-    my ($target,$token) = @_;
+    my ($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 $data=&Apache::lonxml::endredirection();
-	if ($data=~m/width\s*=\s*(\d+\.*\d*\s*(mm|cm))/) {                 
-	    $Apache::londefdef::table[-1]{'length'} .= $1.',';             
+	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 {
-	    $Apache::londefdef::table[-1]{'length'} .= '0 mm,'; 
-	}                                                           
-	@{ $Apache::londefdef::table[-1]{'rowdata'} }[$current_row] .= '\parbox{'.$1.'}{\textbf{'.$data.'}} '.$Apache::londefdef::table[-1]{'vinc'};
+	    if ($data=~m/width\s*=\s*(\d+\.?\d*\s*(mm|cm|in|pc|pt)*)/) {
+		my $current_length=&recalc($1);
+		$current_length=~/(\d+)/;
+		$Apache::londefdef::table[-1]{'TeXlength'} .= $1.',';
+		$Apache::londefdef::table[-1]{'length'} .= '0,';
+	    } else {     
+		$data=~/^\s*(\S.*)/;
+		$data=$1;
+		$data=~/(.*\S)\s*$/;
+		$data=$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]/;
+	}
+	$data='\textbf{'.$data.'}';
+	@{ $Apache::londefdef::table[-1]{'rowdata'} }[$current_row] .= '\parbox{TOBECHANGEDONNUMBER}{'.$data.'} '.$Apache::londefdef::table[-1]{'vinc'};
     }
     return $currentstring;
 }
-
 #-- <img> tag
 sub start_img {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
@@ -1752,10 +2081,9 @@ 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);
@@ -1763,12 +2091,11 @@ 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 $src) {          
 	    #defines the default size of image
@@ -1793,6 +2120,7 @@ sub start_img {
 	    } elsif ($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!(.*)/([^/]*)$!) {
@@ -1880,7 +2208,16 @@ 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 $currentstring;
 }
@@ -1891,7 +2228,6 @@ sub end_applet {
     if ($target eq 'web') {
 	$currentstring = $token->[2];
     } elsif ($target eq 'tex') {
-	$currentstring = " \\end{figure}";
     } 
     return $currentstring;
 }
@@ -1914,7 +2250,6 @@ sub start_embed {
 	    $currentstring='[EMBED: '.$alttag.']';
 	}
     } elsif ($target eq 'tex') {
-	$currentstring = " \\begin{figure} ";  
     } 
     return $currentstring;
 }
@@ -1924,8 +2259,7 @@ sub end_embed {
     my $currentstring = '';
     if ($target eq 'web') {
 	$currentstring = $token->[2];     
-    } elsif ($target eq 'tex') {
-	$currentstring = " \\end{figure}";  
+    } elsif ($target eq 'tex') {  
     } 
     return $currentstring;
 }
@@ -1944,7 +2278,6 @@ sub start_param {
     if ($target eq 'web') {
 	$currentstring = $token->[4];     
     } elsif ($target eq 'tex') {
-	$currentstring = " \\begin{figure} ";  
     } 
     return $currentstring;
 }
@@ -1955,7 +2288,6 @@ sub end_param {
     if ($target eq 'web') {
 	$currentstring = $token->[2];     
     } elsif ($target eq 'tex') {
-	$currentstring = " \\end{figure}";  
     } 
     return $currentstring;
 }
@@ -1965,7 +2297,8 @@ sub start_allow {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $src = &Apache::lonxml::get_param('src',$parstack,$safeeval,undef,1);
     $src=&Apache::lonnet::filelocation($Apache::lonxml::pwd[-1],$src);
-    $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=$src;
+    $Apache::lonxml::extlinks[$#Apache::lonxml::extlinks+1]=
+	&Apache::lonnet::clutter($src);
     &image_replication($src);
     my $result;
     if ($target eq 'edit') {
@@ -1995,7 +2328,29 @@ sub start_frameset {
 	    $currentstring.='<head>'.
 		&Apache::lonmenu::registerurl(undef,$target).'</head>';
 	}
-	$currentstring .= $token->[4];
+	my $onLoad='';
+	foreach my $key (keys(%{$token->[2]})) {
+	    if ($key =~ /^onload$/i) {
+		$onLoad.=$token->[2]->{$key}.';';
+		delete($token->[2]->{$key});
+	    }
+	}
+	$token->[2]->{'onload'}=&Apache::lonmenu::loadevents().';'.$onLoad;
+	my $onUnload='';
+	foreach my $key (keys(%{$token->[2]})) {
+	    if ($key =~ /^onunload$/i) {
+		$onUnload.=$token->[2]->{$key}.';';
+		delete($token->[2]->{$key});
+	    }
+	}
+	$token->[2]->{'onunload'}=&Apache::lonmenu::unloadevents().
+	    ';'.$onUnload;
+	
+	$currentstring .= '<'.$token->[1];
+	foreach (keys %{$token->[2]}) {
+	    $currentstring.=' '.$_.'="'.$token->[2]->{$_}.'"';
+	}
+	$currentstring.='>';
     }
     return $currentstring;
 }
@@ -2009,9 +2364,32 @@ sub end_frameset {
     return $currentstring;
 }
 
+#-- <xmp>
+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 $currentstring;
+}
+
 #-- <pre>
 sub start_pre {
-    my ($target,$token) = @_;
+    my ($target,$token,$tagstack,$parstack,$parser,$safeeval) = @_;
     my $currentstring = '';
     if ($target eq 'web') {
 	$currentstring .= $token->[4];
@@ -2155,7 +2533,7 @@ sub start_base {
     my $currentstring = '';
     if ($target eq 'web') {
 	$currentstring = $token->[4];     
-    } 
+    }
     return $currentstring;
 }
 
@@ -2548,8 +2926,8 @@ 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') {
@@ -2558,7 +2936,7 @@ sub start_malticol {
     return $currentstring;
 }
 
-sub end_malticol {
+sub end_multicol {
     my ($target,$token) = @_;
     my $currentstring = '';
     if ($target eq 'web') {
@@ -2567,13 +2945,15 @@ 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;
 }
 
@@ -2582,11 +2962,13 @@ 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 = '';
@@ -2605,7 +2987,7 @@ sub end_noembed {
     return $currentstring;
 }
 
-#-- <noframes> tag
+#-- <noframes> tag (end tag required)
 sub start_noframes {
     my ($target,$token) = @_;
     my $currentstring = '';
@@ -2624,7 +3006,7 @@ sub end_noframes {
     return $currentstring;
 }
 
-#-- <nolayer> tag
+#-- <nolayer> tag (end tag required)
 sub start_nolayer {
     my ($target,$token) = @_;
     my $currentstring = '';
@@ -2643,7 +3025,7 @@ sub end_nolayer {
     return $currentstring;
 }
 
-#-- <noscript> tag
+#-- <noscript> tag (end tag required)
 sub start_noscript {
     my ($target,$token) = @_;
     my $currentstring = '';
@@ -2662,7 +3044,7 @@ sub end_noscript {
     return $currentstring;
 }
 
-#-- <object> tag
+#-- <object> tag (end tag required)
 sub start_object {
     my ($target,$token) = @_;
     my $currentstring = '';
@@ -2681,7 +3063,7 @@ sub end_object {
     return $currentstring;
 }
 
-#-- <optgroup> tag
+#-- <optgroup> tag (end tag required)
 sub start_optgroup {
     my ($target,$token) = @_;
     my $currentstring = '';
@@ -2700,13 +3082,15 @@ 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;
 }
 
@@ -2715,7 +3099,9 @@ sub end_samp {
     my $currentstring = '';
     if ($target eq 'web') {
 	$currentstring = $token->[2];    
-    } 
+    } elsif ($target eq 'tex') {
+	$currentstring='}';
+    }
     return $currentstring;
 }
 
@@ -2738,7 +3124,7 @@ sub end_server {
     return $currentstring;
 }
 
-#-- <spacer> tag
+#-- <spacer> tag (end tag forbidden)
 sub start_spacer {
     my ($target,$token) = @_;
     my $currentstring = '';
@@ -2757,7 +3143,7 @@ sub end_spacer {
     return $currentstring;
 }
 
-#-- <span> tag
+#-- <span> tag (end tag required)
 sub start_span {
     my ($target,$token) = @_;
     my $currentstring = '';
@@ -2776,7 +3162,7 @@ sub end_span {
     return $currentstring;
 }
 
-#-- <tbody> tag
+#-- <tbody> tag (end tag optional)
 sub start_tbody {
     my ($target,$token) = @_;
     my $currentstring = '';
@@ -2795,7 +3181,7 @@ sub end_tbody {
     return $currentstring;
 }
 
-#-- <tfoot> tag
+#-- <tfoot> tag (end tag optional)
 sub start_tfoot {
     my ($target,$token) = @_;
     my $currentstring = '';
@@ -2814,7 +3200,7 @@ sub end_tfoot {
     return $currentstring;
 }
 
-#-- <thead> tag
+#-- <thead> tag (end tag optional)
 sub start_thead {
     my ($target,$token) = @_;
     my $currentstring = '';
@@ -2839,7 +3225,9 @@ sub start_var {
     my $currentstring = '';
     if ($target eq 'web') {
 	$currentstring = $token->[4];     
-    } 
+    } elsif ($target eq 'tex') {
+	$currentstring = '\textit{'; 
+    }
     return $currentstring;
 }
 
@@ -2847,12 +3235,14 @@ 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 = '';
@@ -2871,6 +3261,25 @@ sub end_wbr {
     return $currentstring;
 }
 
+#-- <hideweboutput> tag
+sub start_hideweboutput {
+    my ($target,$token) = @_;
+    if ($target eq 'web') {
+	&Apache::lonxml::startredirection();     
+    } 
+    return '';
+}
+
+sub end_hideweboutput {
+    my ($target,$token) = @_;
+    my $currentstring = '';
+    if ($target eq 'web') {
+	$currentstring = &Apache::lonxml::endredirection();    
+    } 
+    return '';
+}
+
+
 sub image_replication {
     my $src = shift;
     if (not -e $src) {
@@ -2889,5 +3298,23 @@ sub image_replication {
     return '';
 }
 
+sub recalc {
+    my $argument = shift;
+    if (not $argument=~/(mm|cm|in|pc|pt)/) {return $argument.' mm';}
+    $argument=~/\s*(\d+\.?\d*)\s*(mm|cm|in|pc|pt)/;
+    my $value=$1;
+    my $units=$2;
+    if ($units eq 'cm') {
+	$value*=10;
+    } elsif ($units eq 'in') {
+	$value*=25.4;
+    } elsif ($units eq 'pc') {
+	$value*=(25.4*12/72.27);
+    } elsif ($units eq 'pt') {
+	$value*=(25.4/72.27);
+    }
+    return $value.' mm';
+}
+
 1;
 __END__