--- loncom/xml/lonplot.pm	2004/09/09 19:48:21	1.102
+++ loncom/xml/lonplot.pm	2008/05/19 11:49:48	1.139
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # Dynamic plot
 #
-# $Id: lonplot.pm,v 1.102 2004/09/09 19:48:21 albertel Exp $
+# $Id: lonplot.pm,v 1.139 2008/05/19 11:49:48 foxr Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -35,20 +35,28 @@ use Apache::File;
 use Apache::response;
 use Apache::lonxml;
 use Apache::edit;
+use Apache::lonnet;
+use LONCAPA;
+ 
+
+use vars qw/$weboutputformat $version/;
+
 
-use vars qw/$weboutputformat $versionstring/;
 
 BEGIN {
     &Apache::lonxml::register('Apache::lonplot',('gnuplot'));
     #
     # Determine the version of GNUPLOT
     $weboutputformat = 'gif';
-    $versionstring = `gnuplot --version 2>/dev/null`;
-    if ($versionstring =~ /^gnuplot 4/) {
+    my $versionstring = `gnuplot --version 2>/dev/null`;
+    ($version) = ($versionstring =~ /^gnuplot ([\d.]+)/);
+    if ($version >= 4) {
         $weboutputformat = 'png';
     }
+    
 }
 
+
 ## 
 ## Description of data structures:
 ##
@@ -83,6 +91,12 @@ BEGIN {
 my $max_str_len = 50;    # if a label, title, xlabel, or ylabel text
                          # is longer than this, it will be truncated.
 
+my %linetypes =
+    (
+     solid          => 1,
+     dashed         => 0
+    );
+
 my %linestyles = 
     (
      lines          => 2,     # Maybe this will be used in the future
@@ -97,6 +111,7 @@ my %linestyles =
      yerrorbars	    => [3,4],
      xyerrorbars    => [4,6],
      boxes          => 3,
+     filledcurves   => 2,
      vector	    => 4
     );		    
 
@@ -108,7 +123,7 @@ my $pos_real_test  =
 my $color_test     = sub {$_[0]=~s/\s+//g;$_[0]=~/^x[\da-fA-F]{6}$/};
 my $onoff_test     = sub {$_[0]=~/^(on|off)$/};
 my $key_pos_test   = sub {$_[0]=~/^(top|bottom|right|left|outside|below| )+$/};
-my $sml_test       = sub {$_[0]=~/^(small|medium|large)$/};
+my $sml_test       = sub {$_[0]=~/^(\d+|small|medium|large)$/};
 my $linestyle_test = sub {exists($linestyles{$_[0]})};
 my $words_test     = sub {$_[0]=~s/\s+/ /g;$_[0]=~/^([\w~!\@\#\$\%^&\*\(\)-=_\+\[\]\{\}:\;\'<>,\.\/\?\\]+ ?)+$/};
 
@@ -118,47 +133,48 @@ my $words_test     = sub {$_[0]=~s/\s+/
 ##                                                               ##
 ###################################################################
 my @gnuplot_edit_order = 
-    qw/alttag bgcolor fgcolor height width font transparent grid samples 
-    border align texwidth texfont plottype lmargin rmargin tmargin bmargin 
-    major_ticscale minor_ticscale/;
+    qw/alttag bgcolor fgcolor height width texwidth fontface font texfont
+    transparent grid samples 
+    border align plotcolor plottype gridtype lmargin rmargin
+    tmargin bmargin major_ticscale minor_ticscale boxwidth gridlayer fillstyle
+    pattern solid/;
 
-my $margin_choices = ['default',
-                      qw{0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20}];
+my $margin_choices = ['default',0..20];
 
 my %gnuplot_defaults = 
     (
      alttag       => {
 	 default     => 'dynamically generated plot',
 	 test        => $words_test,
-	 description => 'brief description of the plot',
+	 description => 'Brief description of the plot',
       	 edit_type   => 'entry',
 	 size        => '40'
 	 },
      height       => {
 	 default     => 300,
 	 test        => $int_test,
-	 description => 'height of image (pixels)',
+	 description => 'Height of image (pixels)',
       	 edit_type   => 'entry',
 	 size        => '10'
 	 },
      width        => {
 	 default     => 400,
 	 test        => $int_test,
-	 description => 'width of image (pixels)',
+	 description => 'Width of image (pixels)',
 	 edit_type   => 'entry',
 	 size        => '10'
 	 },
      bgcolor      => {
 	 default     => 'xffffff',
 	 test        => $color_test, 
-	 description => 'background color of image (xffffff)',
+	 description => 'Background color of image (xffffff)',
 	 edit_type   => 'entry',
 	 size        => '10'
 	 },
      fgcolor      => {
 	 default     => 'x000000',
 	 test        => $color_test,
-	 description => 'foreground color of image (x000000)',
+	 description => 'Foreground color of image (x000000)',
 	 edit_type   => 'entry',
 	 size        => '10'
 	 },
@@ -174,6 +190,19 @@ my %gnuplot_defaults =
 	 description => 'Display grid',
 	 edit_type   => 'onoff'
 	 },
+     gridlayer    => {
+	 default     => 'off',
+	 test        => $onoff_test, 
+	 description => 'Display grid front layer over filled boxes or filled curves',
+	 edit_type   => 'onoff'
+	 },
+     box_border   => {
+	 default     => 'noborder',
+	 test        => sub {$_[0]=~/^(noborder|border)$/},
+	 description => 'Draw border for boxes',
+	 edit_type   => 'choice',
+	 choices     => ['border','noborder']
+	 },
      border       => {
 	 default     => 'on',
 	 test        => $onoff_test, 
@@ -181,13 +210,20 @@ my %gnuplot_defaults =
 	 edit_type   => 'onoff'
 	 },
      font         => {
-	 default     => 'medium',
+	 default     => '9',
 	 test        => $sml_test,
-	 description => 'Size of font to use',
+	 description => 'Font size to use in web output (pts)',
 	 edit_type   => 'choice',
-	 choices     => ['small','medium','large']
+	 choices     => [['5','5 (small)'],'6','7','8',['9','9 (medium)'],'10',['11','11 (large)'],'12','15']
 	 },
-     samples         => {
+     fontface     => {
+        default     => 'sans-serif',
+        test        => sub {$_[0]=~/^(sans-serif|serif|classic)$/},
+        description => 'Type of font to use',
+        edit_type   => 'choice',
+        choices     => ['sans-serif','serif', 'classic']
+        },
+     samples      => {
 	 default     => '100',
 	 test        => $int_test,
 	 description => 'Number of samples for non-data plots',
@@ -195,11 +231,11 @@ my %gnuplot_defaults =
 	 choices     => ['100','200','500','1000','2000','5000']
 	 },
      align        => {
-	 default     => 'center',
-	 test        => sub {$_[0]=~/^(left|right|center)$/},
-	 description => 'alignment for image in html',
+	 default     => 'middle',
+	 test        => sub {$_[0]=~/^(left|right|middle|center)$/},
+	 description => 'Alignment for image in HTML',
 	 edit_type   => 'choice',
-	 choices     => ['left','right','center']
+	 choices     => ['left','right','middle']
 	 },
      texwidth     => {
          default     => '93',
@@ -208,48 +244,90 @@ my %gnuplot_defaults =
          edit_type   => 'entry',
          size        => '5'
          },
-     texfont     => {
+     texfont      => {
          default     => '22',
          test        => $int_test,
          description => 'Font size to use in TeX output (pts):',
          edit_type   => 'choice',
          choices     => [qw/8 10 12 14 16 18 20 22 24 26 28 30 32 34 36/],
          },
-     plottype  => {
+     plotcolor    => {
+         default     => 'monochrome',
+         test        => sub {$_[0]=~/^(monochrome|color|colour)$/},
+         description => 'Color setting for printing:',
+         edit_type   => 'choice',
+         choices     => [qw/monochrome color colour/],
+         },
+     pattern      => {
+	 default     => '',
+	 test        => $int_test,
+	 description => 'Pattern value for boxes:',
+	 edit_type   => 'choice',
+         choices     => [0,1,2,3,4,5,6]
+         },
+     solid        => {
+         default     => 0,
+         test        => $real_test,
+         description => 'The density of fill style for boxes',
+         edit_type   => 'entry',
+         size        => '5'
+         },
+     fillstyle    => {
+	 default     => 'empty',
+	 test        => sub {$_[0]=~/^(empty|solid|pattern)$/},
+	 description => 'Filled style for boxes:',
+	 edit_type   => 'choice',
+         choices     => ['empty','solid','pattern']
+         },
+     plottype     => {
 	 default     => 'Cartesian',
 	 test        => sub {$_[0]=~/^(Polar|Cartesian)$/},
 	 description => 'Plot type:',
 	 edit_type   => 'choice',
          choices     => ['Cartesian','Polar']
          },
-     lmargin   => {
+     gridtype     => {
+	 default     => 'Cartesian',
+	 test        => sub {$_[0]=~/^(Polar|Cartesian|Linear-Log|Log-Linear|Log-Log)$/},
+	 description => 'Grid type:',
+	 edit_type   => 'choice',
+         choices     => ['Cartesian','Polar','Linear-Log','Log-Linear','Log-Log']
+         },
+     lmargin      => {
 	 default     => 'default',
 	 test        => sub {$_[0]=~/^(default|\d+)$/},
 	 description => 'Left margin width (pts):',
 	 edit_type   => 'choice',
          choices     => $margin_choices,
          },
-     rmargin   => {
+     rmargin      => {
 	 default     => 'default',
 	 test        => sub {$_[0]=~/^(default|\d+)$/},
 	 description => 'Right margin width (pts):',
 	 edit_type   => 'choice',
          choices     => $margin_choices,
          },
-     tmargin   => {
+     tmargin      => {
 	 default     => 'default',
 	 test        => sub {$_[0]=~/^(default|\d+)$/},
 	 description => 'Top margin width (pts):',
 	 edit_type   => 'choice',
          choices     => $margin_choices,
          },
-     bmargin   => {
+     bmargin      => {
 	 default     => 'default',
 	 test        => sub {$_[0]=~/^(default|\d+)$/},
-	 description => 'Bottm margin width (pts):',
+	 description => 'Bottom margin width (pts):',
 	 edit_type   => 'choice',
          choices     => $margin_choices,
          },
+     boxwidth     => {
+	 default     => '',
+	 test        => $real_test, 
+	 description => 'Width of boxes, default is auto',
+	 edit_type   => 'entry',
+         size        => '5'
+         },
      major_ticscale  => {
          default     => '1',
          test        => $real_test,
@@ -284,7 +362,7 @@ my %key_defaults =
      pos   => { 
 	 default => 'top right', 
 	 test => $key_pos_test, 
-	 description => 'position of the key on the plot',
+	 description => 'Position of the key on the plot',
 	 edit_type   => 'choice',
 	 choices     => ['top left','top right','bottom left','bottom right',
 			 'outside','below']
@@ -296,14 +374,14 @@ my %label_defaults =
      xpos    => {
 	 default => 0,
 	 test => $real_test,
-	 description => 'x position of label (graph coordinates)',
+	 description => 'X position of label (graph coordinates)',
 	 edit_type   => 'entry',
 	 size        => '10'
 	 },
      ypos    => {
 	 default => 0, 
 	 test => $real_test,
-	 description => 'y position of label (graph coordinates)',
+	 description => 'Y position of label (graph coordinates)',
 	 edit_type   => 'entry',
 	 size        => '10'
 	 },
@@ -313,6 +391,13 @@ my %label_defaults =
 	 description => 'justification of the label text on the plot',
 	 edit_type   => 'choice',
 	 choices     => ['left','right','center']
+     },
+     rotate => {
+         default => 0,
+         test => $real_test,
+         description => 'Rotation of label (degrees)',
+         edit_type   => 'entry',
+         size        => '10',
      }
      );
 
@@ -330,7 +415,7 @@ my %tic_defaults =
      mirror => {
 	 default => 'on', 
 	 test => $onoff_test,
-	 description => 'mirror tics on opposite axis?',
+	 description => 'Mirror tics on opposite axis?',
 	 edit_type   => 'onoff'
 	 },
      start => {
@@ -363,93 +448,121 @@ my %tic_defaults =
 	 },         
      );
 
-my @axis_edit_order = ('color','xmin','xmax','ymin','ymax');
+my @axis_edit_order = ('color','xmin','xmax','ymin','ymax','xformat', 'yformat');
 my %axis_defaults = 
     (
      color   => {
 	 default => 'x000000', 
 	 test => $color_test,
-	 description => 'color of grid lines (x000000)',
+	 description => 'Color of grid lines (x000000)',
 	 edit_type   => 'entry',
 	 size        => '10'
 	 },
      xmin      => {
 	 default => '-10.0',
 	 test => $real_test,
-	 description => 'minimum x-value shown in plot',
+	 description => 'Minimum x-value shown in plot',
 	 edit_type   => 'entry',
 	 size        => '10'
 	 },
      xmax      => {
 	 default => ' 10.0',
 	 test => $real_test,
-	 description => 'maximum x-value shown in plot',	 
+	 description => 'Maximum x-value shown in plot',	 
 	 edit_type   => 'entry',
 	 size        => '10'
 	 },
      ymin      => {
 	 default => '-10.0',
 	 test => $real_test,
-	 description => 'minimum y-value shown in plot',	 
+	 description => 'Minimum y-value shown in plot',	 
 	 edit_type   => 'entry',
 	 size        => '10'
 	 },
      ymax      => {
 	 default => ' 10.0',
 	 test => $real_test,
-	 description => 'maximum y-value shown in plot',	 
+	 description => 'Maximum y-value shown in plot',	 
 	 edit_type   => 'entry',
 	 size        => '10'
-	 }
+        },
+     xformat      => {
+         default     => 'on',
+         test        => sub {$_[0]=~/^(on|off|\d+(f|F|e|E))$/},
+         description => 'X-axis number formatting',
+         edit_type   => 'choice',
+         choices     => ['on', 'off', '2e', '2f'],
+         },
+     yformat      => {
+         default     => 'on',
+         test        => sub {$_[0]=~/^(on|off|\d+(f|F|e|E))$/},
+         description => 'X-axis number formatting',
+         edit_type   => 'choice',
+         choices     => ['on', 'off', '2e', '2f'],
+         },
+
      );
 
-my @curve_edit_order = ('color','name','linestyle','pointtype','pointsize');
+my @curve_edit_order = ('color','name','linestyle','linewidth','linetype','pointtype','pointsize','limit');
 
 my %curve_defaults = 
     (
      color     => {
 	 default => 'x000000',
 	 test => $color_test,
-	 description => 'color of curve (x000000)',
+	 description => 'Color of curve (x000000)',
 	 edit_type   => 'entry',
 	 size        => '10'
 	 },
      name      => {
 	 default => '',
 	 test => $words_test,
-	 description => 'name of curve to appear in key',
+	 description => 'Name of curve to appear in key',
 	 edit_type   => 'entry',
 	 size        => '20'
 	 },
      linestyle => {
 	 default => 'lines',
 	 test => $linestyle_test,
-	 description => 'Line style',
+	 description => 'Plot with:',
 	 edit_type   => 'choice',
 	 choices     => [keys(%linestyles)]
 	 },
-# gnuplots term=gif driver does not handle linewidth :(
-#     linewidth => {
-#         default     => 1,
-#         test        => $int_test,
-#         description => 'Line width (may not apply to all line styles)',
-#         edit_type   => 'choice',
-#         choices     => [1,2,3,4,5,6,7,8,9,10]
-#         },
+     linewidth => {
+         default     => 1,
+         test        => $int_test,
+         description => 'Line width (may not apply to all plot styles)',
+         edit_type   => 'choice',
+         choices     => [1,2,3,4,5,6,7,8,9,10]
+         },
+     linetype => {
+         default     => 'solid',
+         test        => sub {$_[0]=~/^(solid|dashed)$/},
+         description => 'Line type (may not apply to all plot styles)',
+         edit_type   => 'choice',
+         choices     => ['solid', 'dashed']
+         }, 
      pointsize => {
          default     => 1,
          test        => $pos_real_test,
-         description => 'point size (may not apply to all line styles)',
+         description => 'Point size (may not apply to all plot styles)',
          edit_type   => 'entry',
          size        => '5'
          },
      pointtype => {
          default     => 1,
          test        => $int_test,
-         description => 'point type (may not apply to all line styles)',
+         description => 'Point type (may not apply to all plot styles)',
          edit_type   => 'choice',
          choices     => [0,1,2,3,4,5,6]
-         }
+         },
+     limit     => {
+         default     => 'closed',
+	 test        => sub {$_[0]=~/^(above|below|closed|x1|x2|y1|y2)$/},
+         description => 'Point to fill -- for filledcurves',
+         edit_type   => 'choice',
+         choices     => ['above', 'below', 'closed','x1','x2','y1','y2']
+         },
      );
 
 ###################################################################
@@ -457,10 +570,12 @@ my %curve_defaults =
 ##                    parsing and edit rendering                 ##
 ##                                                               ##
 ###################################################################
-my (%plot,%key,%axis,$title,$xlabel,$ylabel,@labels,@curves,%xtics,%ytics);
+
+undef %Apache::lonplot::plot;
+my (%key,%axis,$title,$xlabel,$ylabel,@labels,@curves,%xtics,%ytics);
 
 sub start_gnuplot {
-    undef(%plot);   undef(%key);    undef(%axis);
+    undef(%Apache::lonplot::plot);   undef(%key);    undef(%axis);
     undef($title);  undef($xlabel); undef($ylabel);
     undef(@labels); undef(@curves);
     undef(%xtics);  undef(%ytics);
@@ -472,12 +587,14 @@ sub start_gnuplot {
 	      'xtics','ytics'));
     push (@Apache::lonxml::namespace,'lonplot');
     if ($target eq 'web' || $target eq 'tex') {
-	&get_attributes(\%plot,\%gnuplot_defaults,$parstack,$safeeval,
+	&get_attributes(\%Apache::lonplot::plot,\%gnuplot_defaults,$parstack,$safeeval,
 			$tagstack->[-1]);
     } elsif ($target eq 'edit') {
 	$result .= &Apache::edit::tag_start($target,$token,'GnuPlot');
 	$result .= &edit_attributes($target,$token,\%gnuplot_defaults,
-				    \@gnuplot_edit_order);
+				    \@gnuplot_edit_order)
+	    .&Apache::edit::end_row()
+	    .&Apache::edit::start_spanning_row();
     } elsif ($target eq 'modified') {
 	my $constructtag=&Apache::edit::get_new_args
 	    ($token,$parstack,$safeeval,keys(%gnuplot_defaults));
@@ -507,24 +624,28 @@ sub end_gnuplot {
 	##
 	## Determine filename
 	my $tmpdir = '/home/httpd/perl/tmp/';
-	my $filename = $ENV{'user.name'}.'_'.$ENV{'user.domain'}.
+	my $filename = $env{'user.name'}.'_'.$env{'user.domain'}.
 	    '_'.time.'_'.$$.$randnumber.'_plot';
 	## Write the plot description to the file
 	&write_gnuplot_file($tmpdir,$filename,$target);
-	$filename = &Apache::lonnet::escape($filename);
+	$filename = &escape($filename);
 	## return image tag for the plot
 	if ($target eq 'web') {
 	    $result .= <<"ENDIMAGE";
-<img src    = "/cgi-bin/plot.gif?file=$filename.data&output=$weboutputformat" 
-     width  = "$plot{'width'}"
-     height = "$plot{'height'}"
-     align  = "$plot{'align'}"
-     alt    = "$plot{'alttag'}" />
+<img src    = "/cgi-bin/plot.$weboutputformat?file=$filename.data" 
+     width  = "$Apache::lonplot::plot{'width'}"
+     height = "$Apache::lonplot::plot{'height'}"
+     align  = "$Apache::lonplot::plot{'align'}"
+     alt    = "$Apache::lonplot::plot{'alttag'}" />
 ENDIMAGE
         } elsif ($target eq 'tex') {
+	    &Apache::lonxml::debug(" gnuplot wid = $Apache::lonplot::plot{'width'}");
+	    &Apache::lonxml::debug(" gnuplot ht  = $Apache::lonplot::plot{'height'}");
 	    #might be inside the safe space, register the URL for later
 	    &Apache::lonxml::register_ssi("/cgi-bin/plot.gif?file=$filename.data&output=eps");
-	    $result = '\graphicspath{{/home/httpd/perl/tmp/}}\includegraphics[width='.$plot{'texwidth'}.' mm]{'.&Apache::lonnet::unescape($filename).'.eps}';
+	    $result  = "%DYNAMICIMAGE:$Apache::lonplot::plot{'width'}:$Apache::lonplot::plot{'height'}:$Apache::lonplot::plot{'texwidth'}\n";
+	    $result .= '\graphicspath{{/home/httpd/perl/tmp/}}'."\n";
+	    $result .= '\includegraphics[width='.$Apache::lonplot::plot{'texwidth'}.' mm]{'.&unescape($filename).'.eps}';
 	}
     } elsif ($target eq 'edit') {
 	$result.=&Apache::edit::tag_end($target,$token);
@@ -595,6 +716,51 @@ sub end_ytics {
     return $result;
 }
 
+##-----------------------------------------------------------------font
+my %font_properties =
+    (
+     'classic'    => {
+	 face       => 'classic',
+	 file       => 'DejaVuSansMono-Bold',
+	 printname  => 'Helvetica',
+	 tex_no_file => 1,
+     },
+     'sans-serif' => {
+	 face       => 'sans-serif',
+	 file       => 'DejaVuSans',
+	 printname  => 'DejaVuSans',
+     },
+     'serif'      => {
+	 face       => 'serif',
+	 file       => 'DejaVuSerif',
+	 printname  => 'DejaVuSerif',
+     },
+     );
+
+sub get_font {
+    my ($target) = @_;
+    my ($size, $selected_font);
+
+    if ( $Apache::lonplot::plot{'font'} =~ /^(small|medium|large)/) {
+	$selected_font = $font_properties{'classic'};
+	if ( $Apache::lonplot::plot{'font'} eq 'small') {
+	    $size = '5';
+	} elsif ( $Apache::lonplot::plot{'font'} eq 'medium') {
+	    $size = '9';
+	} elsif ( $Apache::lonplot::plot{'font'} eq 'large') {
+	    $size = '11';
+	} else {
+	    $size = '9';
+	}
+    } else {
+	$size = $Apache::lonplot::plot{'font'};
+	$selected_font = $font_properties{$Apache::lonplot::plot{'fontface'}};
+    }
+    if ($target eq 'tex' && defined($Apache::lonplot::plot{'texfont'})) {
+	$size = $Apache::lonplot::plot{'texfont'};
+    }
+    return ($size, $selected_font);
+}
 
 ##----------------------------------------------------------------- key
 sub start_key {
@@ -626,23 +792,268 @@ sub end_key {
     return $result;
 }
 
+sub parse_label {
+    my ($target,$text) = @_;
+    my $parser=HTML::LCParser->new(\$text);
+    my $result;
+    while (my $token=$parser->get_token) {
+	if ($token->[0] eq 'S') {
+	    if ($token->[1] eq 'sub') {
+		$result .= '_{';
+	    } elsif ($token->[1] eq 'sup') {
+		$result .= '^{';
+	    } else {
+		$result .= $token->[4];
+	    }
+	} elsif ($token->[0] eq 'E') {
+	    if ($token->[1] eq 'sub'
+		|| $token->[1] eq 'sup') {
+		$result .= '}';
+	    } else {
+		$result .= $token->[2];
+	    }
+	} elsif ($token->[0] eq 'T') {
+	    $result .= &replace_entities($target,$token->[1]);
+	}
+    }
+    return $result;
+}
+
+
+my %lookup = 
+   (  # Greek alphabet:
+      
+      '(Alpha|#913)'    => {'tex' => '{/Symbol A}', 'web' => "\x{391}"},
+      '(Beta|#914)'    => {'tex' => '{/Symbol B}', 'web' => "\x{392}"},
+      '(Chi|#935)'     => {'tex' => '{/Symbol C}', 'web' => "\x{3A7}"},
+      '(Delta|#916)'   => {'tex' => '{/Symbol D}', 'web' => "\x{394}"},
+      '(Epsilon|#917)' => {'tex' => '{/Symbol E}', 'web' => "\x{395}"},
+      '(Phi|#934)'     => {'tex' => '{/Symbol F}', 'web' => "\x{3A6}"},
+      '(Gamma|#915)'   => {'tex' => '{/Symbol G}', 'web' => "\x{393}"},
+      '(Eta|#919)'     => {'tex' => '{/Symbol H}', 'web' => "\x{397}"},
+      '(Iota|#921)'    => {'tex' => '{/Symbol I}', 'web' => "\x{399}"},
+      '(Kappa|#922)'   => {'tex' => '{/Symbol K}', 'web' => "\x{39A}"},
+      '(Lambda|#923)'  => {'tex' => '{/Symbol L}', 'web' => "\x{39B}"},
+      '(Mu|#924)'      => {'tex' => '{/Symbol M}', 'web' => "\x{39C}"},
+      '(Nu|#925)'      => {'tex' => '{/Symbol N}', 'web' => "\x{39D}"},
+      '(Omicron|#927)' => {'tex' => '{/Symbol O}', 'web' => "\x{39F}"},
+      '(Pi|#928)'      => {'tex' => '{/Symbol P}', 'web' => "\x{3A0}"},
+      '(Theta|#920)'   => {'tex' => '{/Symbol Q}', 'web' => "\x{398}"},
+      '(Rho|#929)'     => {'tex' => '{/Symbol R}', 'web' => "\x{3A1}"},
+      '(Sigma|#931)'   => {'tex' => '{/Symbol S}', 'web' => "\x{3A3}"},
+      '(Tau|#932)'     => {'tex' => '{/Symbol T}', 'web' => "\x{3A4}"},
+      '(Upsilon|#933)' => {'tex' => '{/Symbol U}', 'web' => "\x{3A5}"},
+      '(Omega|#937)'   => {'tex' => '{/Symbol W}', 'web' => "\x{3A9}"},
+      '(Xi|#926)'      => {'tex' => '{/Symbol X}', 'web' => "\x{39E}"},
+      '(Psi|#936)'     => {'tex' => '{/Symbol Y}', 'web' => "\x{3A8}"},
+      '(Zeta|#918)'    => {'tex' => '{/Symbol Z}', 'web' => "\x{396}"},
+      '(alpha|#945)'   => {'tex' => '{/Symbol a}', 'web' => "\x{3B1}"},
+      '(beta|#946)'    => {'tex' => '{/Symbol b}', 'web' => "\x{3B2}"},
+      '(chi|#967)'     => {'tex' => '{/Symbol c}', 'web' => "\x{3C7}"},
+      '(delta|#948)'   => {'tex' => '{/Symbol d}', 'web' => "\x{3B4}"},
+      '(epsilon|#949)' => {'tex' => '{/Symbol e}', 'web' => "\x{3B5}"},
+      '(phi|#966)'     => {'tex' => '{/Symbol f}', 'web' => "\x{3C6}"},
+      '(gamma|#947)'   => {'tex' => '{/Symbol g}', 'web' => "\x{3B3}"},
+      '(eta|#951)'     => {'tex' => '{/Symbol h}', 'web' => "\x{3B7}"},
+      '(iota|#953)'    => {'tex' => '{/Symbol i}', 'web' => "\x{3B9}"},
+      '(kappa|#954)'   => {'tex' => '{/Symbol k}', 'web' => "\x{3BA}"},
+      '(lambda|#955)'  => {'tex' => '{/Symbol k}', 'web' => "\x{3BB}"},
+      '(mu|#956)'      => {'tex' => '{/Symbol m}', 'web' => "\x{3BC}"},
+      '(nu|#957)'      => {'tex' => '{/Symbol n}', 'web' => "\x{3BD}"},
+      '(omicron|#959)' => {'tex' => '{/Symbol o}', 'web' => "\x{3BF}"},
+      '(pi|#960)'      => {'tex' => '{/Symbol p}', 'web' => "\x{3C0}"},
+      '(theta|#952)'   => {'tex' => '{/Symbol q}', 'web' => "\x{3B8}"},
+      '(rho|#961)'     => {'tex' => '{/Symbol r}', 'web' => "\x{3C1}"},
+      '(sigma|#963)'   => {'tex' => '{/Symbol s}', 'web' => "\x{3C3}"},
+      '(tau|#964)'     => {'tex' => '{/Symbol t}', 'web' => "\x{3C4}"},
+      '(upsilon|#965)' => {'tex' => '{/Symbol u}', 'web' => "\x{3C5}"},
+      '(omega|#969)'   => {'tex' => '{/Symbol w}', 'web' => "\x{3C9}"},
+      '(xi|#958)'      => {'tex' => '{/Symbol x}', 'web' => "\x{3BE}"},
+      '(psi|#968)'     => {'tex' => '{/Symbol y}', 'web' => "\x{3C8}"},
+      '(zeta|#950)'    => {'tex' => '{/Symbol z}', 'web' => "\x{3B6}"},
+      '(thetasym|#977)' => {'tex' => '{/Symbol \165}', 'web' => "\x{3d1}"},
+      '(upsih|#978)'   => {'tex' => '{/Symbol \241}', 'web' => "\x{3d2}"},
+      '(piv|#982)'     => {'tex' => '{/Symbol \166}', 'web' => "\x{3d6}"},
+
+
+      # Punctuation:
+      
+      '(quot|#034)'   => {'tex' =>  '\42',            'web' => '\42'},
+      '(amp|#038)'    => {'tex' =>  '\46',            'web' => '\46'},
+      '(lt|#060)'     => {'tex' =>  '\74',            'web' => '\74'},
+      '(gt|#062)'     => {'tex' =>  '\76',            'web' => '\76'},
+      '#131'          => {'tex' =>  '{/Symbol \246}', 'web' => "\x{192}"},
+      '#132'          => {'tex' => '{/Text \271}',    'web' => "\x{201e}"},
+      '#133'          => {'tex' => '{/Symbol \274}',  'web'=> "\x{2026}"},
+      '#134'          => {'tex' => '{/Text \262}',    'web' => "\x{2020}"},
+      '#135'          => {'tex' => '{/Text \263}',    'web' => "\x{2021}"},
+      '#136'          => {'tex' => '\\\\^',           'web' => '\\\\^'},
+      '#137'          => {'tex' => '{/Text \275}',    'web' => "\x{2030}"},
+      '#138'          => {'tex' => 'S',               'web' => "\x{160}"}, # no S-caron in ps fonts.
+      '#139'          => {'tex' => '<',               'web' => '<'},
+      '#140'          => {'tex' => '{/Text \352}',    'web' => "\x{152}"},
+      '#145'          => {'tex' => '\140',            'web' => "\x{2018}"},
+      '#146'          => {'tex' => '\47',             'web' => "\x{2019}"},
+      '#147'          => {'tex' => '{/Text \252}',    'web' => "\x{201c}"},
+      '#148'          => {'tex' => '{/Text \315}',    'web' => '\\"'},
+      '#149'          => {'tex' => '{/Symbol \267}',  'web' => "\x{2022}"},
+      '#150'          => {'tex' => '{/Text \55}',     'web' => "\x{2013}"},  #Untested here en dash
+      '#151'          => {'tex' => '{/Symbol \55}',   'web' => "\x{2014}"},  # em dash
+      '#152'          => {'tex' => '~',               'web' => '~'},
+      '#153'          => {'tex' => '{/Text \324}',    'web' => "\x{2122}"}, # trademark
+
+      # Accented letters, and other furreign language glyphs.
+
+      '#154'          => {'tex' => 's',               'web' => "\x{161}"}, # small s-caron no ps.
+      '#155'          => {'tex' => '>',               'web' => '\76'},     # >
+      '#156'          => {'tex' => '{/Text \372}',    'web' => "\x{153}"}, # oe ligature.
+      '#159',         => {'tex' => 'Y',               'web' => "\x{178}"}, # Y-umlaut - can't print
+      '(nbsp|#160)'   => {'tex' => ' ',               'web' => ' '},       # non breaking space.
+      '(iexcl|#161)'  => {'tex' => '{/Text \241}',    'web' => "\x{a1}"},  # inverted !
+      '(cent|#162)'   => {'tex' => '{/Text \242}',    'web' => "\x{a2}"},  # Cent currency.
+      '(pound|#163}'  => {'tex' => '{/Text \243}',    'web' => "\x{a3}"},  # GB Pound currency.
+      '(curren|#164)' => {'tex' => '{/Text \250}',    'web' => "\x{a4}"},  # Generic currency symb.
+      '(yen|#165)'    => {'tex' => '{/Text \245}',    'web' => "\x{a5}"},  # Yen currency.
+      '(brvbar|#166)' => {'tex' => '{/Symbol \174}',  'web' => "\x{a6}"},  # Broken vert bar no print.
+      '(sect|#167)'   => {'tex' => '{\247}',          'web' => "\x{a7}"},  # Section symbol.
+      '(uml|#168)'    => {'tex' => '{\250}',          'web' => "\x{a8}"},  # 'naked' umlaut.
+      '(copy|#169)'   => {'tex' => '{/Symbol \343}',  'web' => "\x{a9}"},  # Copyright symbol.
+      '(ordf|#170)'   => {'tex' => '{/Text \343}',    'web' => "\x{aa}"},  # Feminine ordinal.
+      '(laquo|#171)'  => {'tex' => '{/Text \253}',    'web' => "\x{ab}"},  # << quotes.
+      '(not|#172)'    => {'tex' => '\254',            'web' => "\x{ac}"},  # Logical not.
+      '(shy|#173)'    => {'tex' => '-',               'web' => "\x{ad}"},  # soft hyphen.
+      '(reg|#174)'    => {'tex' => '{/Symbol \342}',  'web' => "\x{ae}"},  # Registered tm.
+      '(macr|#175)'   => {'tex' => '^{-}',            'web' => "\x{af}"},  # 'naked' macron (overbar).
+      '(deg|#176)'    => {'tex' => '{/Text \312}',    'web' => "\x{b0}"},  # Degree symbo..
+      '(plusmn|#177)' => {'tex' => '{/Symbol \261}',  'web' => "\x{b1}"},  # +/- symbol.
+      '(sup2|#178)'   => {'tex' => '^2',              'web' => "\x{b2}"},  # Superscript 2.
+      '(sup3|#179)'   => {'tex' => '^3',              'web' => "\x{b3}"},  # Superscript 3.
+      '(acute|#180)'  => {'tex' => '{/Text \302}',    'web' => "\x{b4}"},  # 'naked' acute accent.
+      '(micro|#181)'  => {'tex' => '{/Symbol \155}',  'web' => "\x{b5}"},  # Micro (small mu).
+      '(para|#182)'   => {'tex' => '{/Text \266}',    'web' => "\x{b6}"},  # Paragraph symbol.
+      '(middot|#183)' => {'tex' => '^.',              'web' => "\x{b7}"},  # middle dot (maybe text 267 is better)?
+      '(cedil|#184)'  => {'tex' => '\233',            'web' => "\x{b8}"},  # 'naked' cedilla.
+      '(sup1|#185)'   => {'tex' => '^1',              'web' => "\x{b9}"},  # superscript 1.
+      '(ordm|#186)'   => {'tex' => '\353',            'web' => "\x{ba}"},  # masculine ordinal.
+      '(raquo|#187)', => {'tex' => '\273',            'web' => "\x{bb}"},  # Right angle quotes.
+      '(frac14|#188)' => {'tex' => '\274',            'web' => "\x{bc}"},  # 1/4.
+      '(frac12|#189)' => {'tex' => '\275',            'web' => "\x{bd}"},  # 1/2.
+      '(frac34|#190)' => {'tex' => '\276',            'web' => "\x{be}"},  # 3/4
+      '(iquest|#191)' => {'tex' => '{/Text \277}',    'web' => "\x{bf}"},  # Inverted ?
+      '(Agrave|#192)' => {'tex' => '\300',            'web' => "\x{c0}"},  # A Grave.
+      '(Aacute|#193)' => {'tex' => '\301',            'web' => "\x{c1}"},  # A Acute.
+      '(Acirc|#194)'  => {'tex' => '\302',            'web' => "\x{c2}"},  # A Circumflex.
+      '(Atilde|#195)' => {'tex' => '\303',            'web' => "\x{c3}"},  # A tilde.
+      '(Auml|#196)'   => {'tex' => '\304',            'web' => "\x{c4}"},  # A umlaut.
+      '(Aring|#197)'  => {'tex' => '\305',            'web' => "\x{c5}"},  # A ring.
+      '(AElig|#198)'  => {'tex' => '\306',            'web' => "\x{c6}"},  # AE ligature.
+      '(Ccedil|#199)' => {'tex' => '\307',            'web' => "\x{c7}"},  # C cedilla
+      '(Egrave|#200)' => {'tex' => '\310',            'web' => "\x{c8}"},  # E Accent grave.
+      '(Eacute|#201)' => {'tex' => '\311',            'web' => "\x{c9}"},  # E acute accent.
+      '(Ecirc|#202)'  => {'tex' => '\312',            'web' => "\x{ca}"},  # E Circumflex.
+      '(Euml|#203)'   => {'tex' => '\313',            'web' => "\x{cb}"},  # E umlaut.
+      '(Igrave|#204)' => {'tex' => '\314',            'web' => "\x{cc}"},  # I grave accent.
+      '(Iacute|#205)' => {'tex' => '\315',            'web' => "\x{cd}"},  # I acute accent.
+      '(Icirc|#206)'  => {'tex' => '\316',            'web' => "\x{ce}"},  # I circumflex.
+      '(Iuml|#207)'   => {'tex' => '\317',            'web' => "\x{cf}"},  # I umlaut.
+      '(ETH|#208)'    => {'tex' => '\320',            'web' => "\x{d0}"},  # Icelandic Cap eth.
+      '(Ntilde|#209)' => {'tex' => '\321',            'web' => "\x{d1}"},  # Ntilde (enyan).
+      '(Ograve|#210)' => {'tex' => '\322',            'web' => "\x{d2}"},  # O accent grave.
+      '(Oacute|#211)' => {'tex' => '\323',            'web' => "\x{d3}"},  # O accent acute.
+      '(Ocirc|#212)'  => {'tex' => '\324',            'web' => "\x{d4}"},  # O circumflex.
+      '(Otilde|#213)' => {'tex' => '\325',            'web' => "\x{d5}"},  # O tilde.
+      '(Ouml|#214)'   => {'tex' => '\326',            'web' => "\x{d6}"},  # O umlaut.
+      '(times|#215)'  => {'tex' => '\327',            'web' => "\x{d7}"},  # Times symbol.
+      '(Oslash|#216)' => {'tex' => '\330',            'web' => "\x{d8}"},  # O slash.
+      '(Ugrave|#217)' => {'tex' => '\331',            'web' => "\x{d9}"},  # U accent grave.
+      '(Uacute|#218)' => {'tex' => '\332',            'web' => "\x{da}"},  # U accent acute.
+      '(Ucirc|#219)'  => {'tex' => '\333',            'web' => "\x{db}"},  # U circumflex.
+      '(Uuml|#220)'   => {'tex' => '\334',            'web' => "\x{dc}"},  # U umlaut.
+      '(Yacute|#221)' => {'tex' => '\335',            'web' => "\x{dd}"},  # Y accent acute.
+      '(THORN|#222)'  => {'tex' => '\336',            'web' => "\x{de}"},  # Icelandic thorn.
+      '(szlig|#223)'  => {'tex' => '\337',            'web' => "\x{df}"},  # German sharfes s.
+      '(agrave|#224)' => {'tex' => '\340',            'web' => "\x{e0}"},  # a accent grave.
+      '(aacute|#225)' => {'tex' => '\341',            'web' => "\x{e1}"},  # a grave.
+      '(acirc|#226)'  => {'tex' => '\342',            'web' => "\x{e2}"},  # a circumflex.
+      '(atilde|#227)' => {'tex' => '\343',            'web' => "\x{e3}"},  # a tilde.
+      '(auml|#228)'   => {'tex' => '\344',            'web' => "\x{e4}"},  # a umlaut
+      '(aring|#229)'  => {'tex' => '\345',            'web' => "\x{e5}"},  # a ring on top.
+      '(aelig|#230)'  => {'tex' => '\346',            'web' => "\x{e6}"},  # ae ligature.
+      '{ccedil|#231)' => {'tex' => '\347',            'web' => "\x{e7}"},  # C cedilla
+      '(egrave|#232)' => {'tex' => '\350',            'web' => "\x{e8}"},  # e accent grave.
+      '(eacute|#233)' => {'tex' => '\351',            'web' => "\x{e9}"},  # e accent acute.
+      '(ecirc|#234)'  => {'tex' => '\352',            'web' => "\x{ea}" }, # e circumflex.
+      '(euml|#235)'   => {'tex' => '\353',            'web' => "\x{eb}"},  # e umlaut.
+      '(igrave|#236)' => {'tex' => '\354',            'web' => "\x{ec}"},  # i grave.
+      '(iacute|#237}' => {'tex' => '\355',            'web' => "\x{ed}"},  # i acute.
+      '(icirc|#238}'  => {'tex' => '\356',            'web' => "\x{ee}"},  # i circumflex.
+      '(iuml|#239)'   => {'tex' => '\357',            'web' => "\x{ef}"},  # i umlaut.
+      '(eth|#240)'    => {'tex' => '\360',            'web' => "\x{f0}"},  # Icelandic eth.
+      '(ntilde|#241)' => {'tex' => '\361',            'web' => "\x{f1}"},  # n tilde.
+      '(ograve|#242)' => {'tex' => '\362',            'web' => "\x{f2}"},  # o grave.
+      '(oacute|#243)' => {'tex' => '\363',            'web' => "\x{f3}"},  # o acute.
+      '(ocirc'|#244)' => {'tex' => '\364',            'web' => "\x{f4}"},  # o circumflex.
+      '(otilde|#245)' => {'tex' => '\365',            'web' => "\x{f5}"},  # o tilde.
+      '(ouml|#246)'   => {'tex' => '\366',            'web' => "\x{f6}"},  # o umlaut.
+      '(divide|#247)' => {'tex' => '\367',            'web' => "\x{f7}"},  # division symbol
+      '(oslash|#248)' => {'tex' => '\370',            'web' => "\x{f8}"},  # o slashed.
+      '(ugrave|#249)' => {'tex' => '\371',            'web' => "\x{f9}"},  # u accent grave.
+      '(uacute|#250)' => {'tex' => '\372',            'web' => "\x{fa}"},  # u acute.
+      '(ucirc|#251)'  => {'tex' => '\373',            'web' => "\x{fb}"},  # u circumflex.
+      '(uuml|#252)'   => {'tex' => '\374',            'web' => "\x{fc}"},  # u umlaut.
+      '(yacute|#253)' => {'tex' => '\375',            'web' => "\x{fd}"},  # y acute accent.
+      '(thorn|#254)'  => {'tex' => '\376',            'web' => "\x{fe}"},  # small thorn (icelandic).
+      '(yuml|#255)'   => {'tex' => '\377',            'web' => "\x{ff}"},  # y umlaut.
+      
+      # Latin extended A entities:
+
+      '(OElig|#338)'  => {'tex' => '{/Text \352}',   'web' => "\x{152}"},  # OE ligature.
+      '(oelig|#339)'  => {'tex' => '{/Text \372}',   'web' => "\x{153}"},  # oe ligature.
+      '(Scaron|#352)' => {'tex' => 'S',              'web' => "\x{160}"},  # S caron no printable.
+      '(scaron|#353)' => {'tex' => 's',              'web' => "\x{161}"},  # s caron no printable.
+      '(Yuml|#376)'   => {'tex' => 'Y',              'web' => "\x{178}"},  # Y umlaut - no printable.
+
+      # Latin extended B.
+
+      '(fnof|#402)'  => {'tex' =>'{/Symbol 246}',    'web' => "\x{192}"},  # f with little hook.
+
+      # Standalon accents:
+
+      '(circ|#710)'  => {'tex' => '^',               'web' => '^'},        # circumflex.
+      '(tilde|#732)' => {'tex' => '~',               'web' => '~'},        # tilde.
+
+      
+
+    );
+
+
+sub replace_entities {
+    my ($target,$text) = @_;
+    $text =~ s{([_^~\{\}]|\\\\)}{\\\\$1}g;
+    while (my ($re, $replace) = each(%lookup)) {
+	my $repl = $replace->{$target};
+	$text =~ s/&$re;/$replace->{$target}/g;
+    }
+    $text =~ s{(&)}{\\\\$1}g;
+    return $text;
+}
+
 ##------------------------------------------------------------------- title
 sub start_title {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
     my $result='';
     if ($target eq 'web' || $target eq 'tex') {
-	$title = &Apache::lonxml::get_all_text("/title",$parser);
+	$title = &Apache::lonxml::get_all_text("/title",$parser,$style);
 	$title=&Apache::run::evaluate($title,$safeeval,$$parstack[-1]);
 	$title =~ s/\n/ /g;
 	if (length($title) > $max_str_len) {
 	    $title = substr($title,0,$max_str_len);
 	}
+	$title = &parse_label($target,$title);
     } elsif ($target eq 'edit') {
 	$result.=&Apache::edit::tag_start($target,$token,'Plot Title');
-	my $text=&Apache::lonxml::get_all_text("/title",$parser);
-	$result.=&Apache::edit::end_row().
-	    &Apache::edit::start_spanning_row().
-	    &Apache::edit::editline('',$text,'',60);
+	my $text=&Apache::lonxml::get_all_text("/title",$parser,$style);
+	$result.=&Apache::edit::editline('',$text,'',60);
     } elsif ($target eq 'modified') {
 	$result.=&Apache::edit::rebuild_tag($token);
 	$result.=&Apache::edit::modifiedfield("/title",$parser);
@@ -664,18 +1075,17 @@ sub start_xlabel {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
     my $result='';
     if ($target eq 'web' || $target eq 'tex') {
-	$xlabel = &Apache::lonxml::get_all_text("/xlabel",$parser);
+	$xlabel = &Apache::lonxml::get_all_text("/xlabel",$parser,$style);
 	$xlabel=&Apache::run::evaluate($xlabel,$safeeval,$$parstack[-1]);
 	$xlabel =~ s/\n/ /g;
 	if (length($xlabel) > $max_str_len) {
 	    $xlabel = substr($xlabel,0,$max_str_len);
 	}
+	$xlabel = &parse_label($target,$xlabel);
     } elsif ($target eq 'edit') {
 	$result.=&Apache::edit::tag_start($target,$token,'Plot Xlabel');
-	my $text=&Apache::lonxml::get_all_text("/xlabel",$parser);
-	$result.=&Apache::edit::end_row().
-	    &Apache::edit::start_spanning_row().
-	    &Apache::edit::editline('',$text,'',60);
+	my $text=&Apache::lonxml::get_all_text("/xlabel",$parser,$style);
+	$result.=&Apache::edit::editline('',$text,'',60);
     } elsif ($target eq 'modified') {
 	$result.=&Apache::edit::rebuild_tag($token);	
 	$result.=&Apache::edit::modifiedfield("/xlabel",$parser);
@@ -698,18 +1108,17 @@ sub start_ylabel {
     my ($target,$token,$tagstack,$parstack,$parser,$safeeval,$style)=@_;
     my $result='';
     if ($target eq 'web' || $target eq 'tex') {
-	$ylabel = &Apache::lonxml::get_all_text("/ylabel",$parser);
+	$ylabel = &Apache::lonxml::get_all_text("/ylabel",$parser,$style);
 	$ylabel = &Apache::run::evaluate($ylabel,$safeeval,$$parstack[-1]);
 	$ylabel =~ s/\n/ /g;
 	if (length($ylabel) > $max_str_len) {
 	    $ylabel = substr($ylabel,0,$max_str_len);
 	}
+	$ylabel = &parse_label($target,$ylabel);
     } elsif ($target eq 'edit') {
 	$result .= &Apache::edit::tag_start($target,$token,'Plot Ylabel');
-	my $text = &Apache::lonxml::get_all_text("/ylabel",$parser);
-	$result .= &Apache::edit::end_row().
-	    &Apache::edit::start_spanning_row().
-	    &Apache::edit::editline('',$text,'',60);
+	my $text = &Apache::lonxml::get_all_text("/ylabel",$parser,$style);
+	$result .= &Apache::edit::editline('',$text,'',60);
     } elsif ($target eq 'modified') {
 	$result.=&Apache::edit::rebuild_tag($token);
 	$result.=&Apache::edit::modifiedfield("/ylabel",$parser);
@@ -735,16 +1144,16 @@ sub start_label {
 	my %label;
 	&get_attributes(\%label,\%label_defaults,$parstack,$safeeval,
 		    $tagstack->[-1]);
-	my $text = &Apache::lonxml::get_all_text("/label",$parser);
+	my $text = &Apache::lonxml::get_all_text("/label",$parser,$style);
 	$text = &Apache::run::evaluate($text,$safeeval,$$parstack[-1]);
 	$text =~ s/\n/ /g;
 	$text = substr($text,0,$max_str_len) if (length($text) > $max_str_len);
-	$label{'text'} = $text;
+	$label{'text'} = &parse_label($target,$text);
 	push(@labels,\%label);
     } elsif ($target eq 'edit') {
 	$result .= &Apache::edit::tag_start($target,$token,'Plot Label');
 	$result .= &edit_attributes($target,$token,\%label_defaults);
-	my $text = &Apache::lonxml::get_all_text("/label",$parser);
+	my $text = &Apache::lonxml::get_all_text("/label",$parser,$style);
 	$result .= &Apache::edit::end_row().
 	    &Apache::edit::start_spanning_row().
 	    &Apache::edit::editline('',$text,'',60);
@@ -781,13 +1190,15 @@ sub start_curve {
     } elsif ($target eq 'edit') {
 	$result .= &Apache::edit::tag_start($target,$token,'Curve');
 	$result .= &edit_attributes($target,$token,\%curve_defaults,
-                                    \@curve_edit_order);
+                                    \@curve_edit_order)
+	    .&Apache::edit::end_row()
+	    .&Apache::edit::start_spanning_row();
+
     } elsif ($target eq 'modified') {
 	my $constructtag=&Apache::edit::get_new_args
 	    ($token,$parstack,$safeeval,keys(%curve_defaults));
 	if ($constructtag) {
 	    $result = &Apache::edit::rebuild_tag($token);
-	    $result.= &Apache::edit::handle_insert();
 	}
     }
     return $result;
@@ -818,15 +1229,14 @@ sub start_function {
                  'curve function declaration.');
 	    delete $curves[-1]->{'data'} ;
 	}
-        my $function = &Apache::lonxml::get_all_text("/function",$parser);
+        my $function = &Apache::lonxml::get_all_text("/function",$parser,
+						     $style);
 	$function = &Apache::run::evaluate($function,$safeeval,$$parstack[-1]);
 	$curves[-1]->{'function'} = $function; 
     } elsif ($target eq 'edit') {
 	$result .= &Apache::edit::tag_start($target,$token,'Gnuplot compatible curve function');
-	my $text = &Apache::lonxml::get_all_text("/function",$parser);
-	$result .= &Apache::edit::end_row().
-	    &Apache::edit::start_spanning_row().
-	    &Apache::edit::editline('',$text,'',60);
+	my $text = &Apache::lonxml::get_all_text("/function",$parser,$style);
+	$result .= &Apache::edit::editline('',$text,'',60);
     } elsif ($target eq 'modified') {
 	$result.=&Apache::edit::rebuild_tag($token);
 	$result.=&Apache::edit::modifiedfield("/function",$parser);
@@ -857,7 +1267,7 @@ sub start_data {
                  'curve data declaration.');
 	    delete($curves[-1]->{'function'});
 	}
-	my $datatext = &Apache::lonxml::get_all_text("/data",$parser);
+	my $datatext = &Apache::lonxml::get_all_text("/data",$parser,$style);
 	$datatext=&Apache::run::evaluate($datatext,$safeeval,$$parstack[-1]);
 	# Deal with cases where we're given an array...
 	if ($datatext =~ /^\@/) {
@@ -900,10 +1310,8 @@ sub start_data {
 	push  @{$curves[-1]->{'data'}},\@data;
     } elsif ($target eq 'edit') {
 	$result .= &Apache::edit::tag_start($target,$token,'Comma or space deliminated curve data');
-	my $text = &Apache::lonxml::get_all_text("/data",$parser);
-	$result .= &Apache::edit::end_row().
-	    &Apache::edit::start_spanning_row().
-	    &Apache::edit::editline('',$text,'',60);
+	my $text = &Apache::lonxml::get_all_text("/data",$parser,$style);
+	$result .= &Apache::edit::editline('',$text,'',60);
     } elsif ($target eq 'modified') {
 	$result.=&Apache::edit::rebuild_tag($token);
 	$result.=&Apache::edit::modifiedfield("/data",$parser);
@@ -997,9 +1405,9 @@ sub get_attributes{
 ##------------------------------------------------------- write_gnuplot_file
 sub write_gnuplot_file {
     my ($tmpdir,$filename,$target)= @_;
+    my ($fontsize, $font_properties) =  &get_font($target);
     my $gnuplot_input = '';
     my $curve;
-    my $pt = $plot{'texfont'};
     #
     # Check to be sure we do not have any empty curves
     my @curvescopy;
@@ -1020,68 +1428,115 @@ sub write_gnuplot_file {
     @curves = @curvescopy;
     # Collect all the colors
     my @Colors;
-    push @Colors, $plot{'bgcolor'};
-    push @Colors, $plot{'fgcolor'}; 
-    push @Colors, (defined($axis{'color'})?$axis{'color'}:$plot{'fgcolor'});
+    push @Colors, $Apache::lonplot::plot{'bgcolor'};
+    push @Colors, $Apache::lonplot::plot{'fgcolor'}; 
+    push @Colors, (defined($axis{'color'})?$axis{'color'}:$Apache::lonplot::plot{'fgcolor'});
     foreach $curve (@curves) {
 	push @Colors, ($curve->{'color'} ne '' ? 
 		       $curve->{'color'}       : 
-		       $plot{'fgcolor'}        );
+		       $Apache::lonplot::plot{'fgcolor'}        );
     }
     # set term
     if ($target eq 'web') {
-	$gnuplot_input .= 'set term gif ';
-	$gnuplot_input .= 'transparent ' if ($plot{'transparent'} eq 'on');
-	$gnuplot_input .= $plot{'font'} . ' ';
-	$gnuplot_input .= 'size '.$plot{'width'}.','.$plot{'height'}.' ';
+	$gnuplot_input .= 'set terminal png enhanced nocrop ';
+	$gnuplot_input .= 'transparent ' if ($Apache::lonplot::plot{'transparent'} eq 'on');
+	$gnuplot_input .= 'font "'.$Apache::lonnet::perlvar{'lonFontsDir'}.
+	    '/'.$font_properties->{'file'}.'.ttf" ';
+	$gnuplot_input .= $fontsize;
+	$gnuplot_input .= ' size '.$Apache::lonplot::plot{'width'}.','.$Apache::lonplot::plot{'height'}.' ';
 	$gnuplot_input .= "@Colors\n";
 	# set output
 	$gnuplot_input .= "set output\n";
     } elsif ($target eq 'tex') {
-	$gnuplot_input .= "set term postscript eps monochrome solid \"Helvetica\" $pt \n";
-	$gnuplot_input .= "set output \"/home/httpd/perl/tmp/".
-	    &Apache::lonnet::unescape($filename).".eps\"\n";
+	$gnuplot_input .= "set term postscript eps enhanced $Apache::lonplot::plot{'plotcolor'} solid ";
+	if (!$font_properties->{'tex_no_file'}) {
+	    $gnuplot_input .=
+		'fontfile "'.$Apache::lonnet::perlvar{'lonFontsDir'}.
+		'/'.$font_properties->{'file'}.'.pfb" ';
+	}
+	$gnuplot_input .= ' "'.$font_properties->{'printname'}.'" ';
+	$gnuplot_input .= $fontsize;
+	$gnuplot_input .= "\nset output \"/home/httpd/perl/tmp/".
+	    &unescape($filename).".eps\"\n";
     }
-    # cartesian or polar?
-    if (lc($plot{'plottype'}) eq 'polar') {
+    # cartesian or polar plot?
+    if (lc($Apache::lonplot::plot{'plottype'}) eq 'polar') {
         $gnuplot_input .= 'set polar'.$/;
     } else {
         # Assume Cartesian
     }
+    # cartesian or polar grid?
+    if (lc($Apache::lonplot::plot{'gridtype'}) eq 'polar') {
+        $gnuplot_input .= 'set grid polar'.$/;
+    } elsif (lc($Apache::lonplot::plot{'gridtype'}) eq 'linear-log') {
+        $gnuplot_input .= 'set logscale x'.$/;
+    } elsif (lc($Apache::lonplot::plot{'gridtype'}) eq 'log-linear') {
+        $gnuplot_input .= 'set logscale y'.$/;
+    } elsif (lc($Apache::lonplot::plot{'gridtype'}) eq 'log-log') {
+        $gnuplot_input .= 'set logscale x'.$/;
+        $gnuplot_input .= 'set logscale y'.$/;
+    } else {
+        # Assume Cartesian
+    }
+    # solid or pattern for boxes?
+    if (lc($Apache::lonplot::plot{'fillstyle'}) eq 'solid') {
+        $gnuplot_input .= 'set style fill solid '.
+	    $Apache::lonplot::plot{'solid'}.$Apache::lonplot::plot{'box_border'}.$/;
+    } elsif (lc($Apache::lonplot::plot{'fillstyle'}) eq 'pattern') {
+        $gnuplot_input .= 'set style fill pattern '.$Apache::lonplot::plot{'pattern'}.$Apache::lonplot::plot{'box_border'}.$/;
+    } elsif (lc($Apache::lonplot::plot{'fillstyle'}) eq 'empty') {
+    }
     # margin
-    if (lc($plot{'lmargin'}) ne 'default') {
-        $gnuplot_input .= 'set lmargin '.$plot{'lmargin'}.$/;
+    if (lc($Apache::lonplot::plot{'lmargin'}) ne 'default') {
+        $gnuplot_input .= 'set lmargin '.$Apache::lonplot::plot{'lmargin'}.$/;
     }
-    if (lc($plot{'rmargin'}) ne 'default') {
-        $gnuplot_input .= 'set rmargin '.$plot{'rmargin'}.$/;
+    if (lc($Apache::lonplot::plot{'rmargin'}) ne 'default') {
+        $gnuplot_input .= 'set rmargin '.$Apache::lonplot::plot{'rmargin'}.$/;
     }
-    if (lc($plot{'tmargin'}) ne 'default') {
-        $gnuplot_input .= 'set tmargin '.$plot{'tmargin'}.$/;
+    if (lc($Apache::lonplot::plot{'tmargin'}) ne 'default') {
+        $gnuplot_input .= 'set tmargin '.$Apache::lonplot::plot{'tmargin'}.$/;
     }
-    if (lc($plot{'bmargin'}) ne 'default') {
-        $gnuplot_input .= 'set bmargin '.$plot{'bmargin'}.$/;
+    if (lc($Apache::lonplot::plot{'bmargin'}) ne 'default') {
+        $gnuplot_input .= 'set bmargin '.$Apache::lonplot::plot{'bmargin'}.$/;
     }
+
     # tic scales
-    $gnuplot_input .= 'set ticscale '.
-        $plot{'major_ticscale'}.' '.$plot{'minor_ticscale'}.$/;
+    if ($version > 4) {
+	$gnuplot_input .= 'set tics scale '.
+	    $Apache::lonplot::plot{'major_ticscale'}.', '.$Apache::lonplot::plot{'minor_ticscale'}.$/;
+    } else {
+    	$gnuplot_input .= 'set ticscale '.
+	    $Apache::lonplot::plot{'major_ticscale'}.' '.$Apache::lonplot::plot{'minor_ticscale'}.$/;
+    }
+    #boxwidth
+    if (lc($Apache::lonplot::plot{'boxwidth'}) ne '') {
+	$gnuplot_input .= 'set boxwidth '.$Apache::lonplot::plot{'boxwidth'}.$/;
+    }
+    # gridlayer
+    $gnuplot_input .= 'set grid noxtics noytics front '.$/ 
+	if ($Apache::lonplot::plot{'gridlayer'} eq 'on');
+
     # grid
-    $gnuplot_input .= 'set grid'.$/ if ($plot{'grid'} eq 'on');
+    $gnuplot_input .= 'set grid'.$/ if ($Apache::lonplot::plot{'grid'} eq 'on');
     # border
-    $gnuplot_input .= ($plot{'border'} eq 'on'?
+    $gnuplot_input .= ($Apache::lonplot::plot{'border'} eq 'on'?
 		       'set border'.$/           :
 		       'set noborder'.$/         );
     # sampling rate for non-data curves
-    $gnuplot_input .= "set samples $plot{'samples'}\n";
+    $gnuplot_input .= "set samples $Apache::lonplot::plot{'samples'}\n";
     # title, xlabel, ylabel
     # titles
+    my $extra_space_x = ($xtics{'location'} eq 'axis') ? ' 0, -0.5 ' : '';
+    my $extra_space_y = ($ytics{'location'} eq 'axis') ? ' -0.5, 0 ' : '';
+
     if ($target eq 'tex') {
-        $gnuplot_input .= "set title  \"$title\" font \"Helvetica,".$pt."pt\"\n"  if (defined($title)) ;
-        $gnuplot_input .= "set xlabel \"$xlabel\" font \"Helvetica,".$pt."pt\" \n" if (defined($xlabel));
-        $gnuplot_input .= "set ylabel \"$ylabel\" font \"Helvetica,".$pt."pt\"\n" if (defined($ylabel));
+	$gnuplot_input .= "set title  \"$title\"          font \"".$font_properties->{'printname'}.",".$fontsize."pt\"\n" if (defined($title)) ;
+	$gnuplot_input .= "set xlabel \"$xlabel\" $extra_space_x font \"".$font_properties->{'printname'}.",".$fontsize."pt\"\n" if (defined($xlabel));
+	$gnuplot_input .= "set ylabel \"$ylabel\" $extra_space_y font \"".$font_properties->{'printname'}.",".$fontsize."pt\"\n" if (defined($ylabel));
     } else {
-        $gnuplot_input .= "set title  \"$title\"  \n"  if (defined($title)) ;
-        $gnuplot_input .= "set xlabel \"$xlabel\" \n" if (defined($xlabel));
-        $gnuplot_input .= "set ylabel \"$ylabel\" \n" if (defined($ylabel));
+        $gnuplot_input .= "set title  \"$title\"          \n" if (defined($title)) ;
+        $gnuplot_input .= "set xlabel \"$xlabel\" $extra_space_x \n" if (defined($xlabel));
+        $gnuplot_input .= "set ylabel \"$ylabel\" $extra_space_y \n" if (defined($ylabel));
     }
     # tics
     if (%xtics) {    
@@ -1106,6 +1561,22 @@ sub write_gnuplot_file {
     }
     # axis
     if (%axis) {
+        if ($axis{'xformat'} ne 'on') {
+            $gnuplot_input .= "set format x ";
+            if ($axis{'xformat'} eq 'off') {
+                $gnuplot_input .= "\"\"\n";
+            } else {
+                $gnuplot_input .= "\"\%.".$axis{'xformat'}."\"\n";
+            }
+        }
+        if ($axis{'yformat'} ne 'on') {
+            $gnuplot_input .= "set format y ";
+            if ($axis{'yformat'} eq 'off') {
+                $gnuplot_input .= "\"\"\n";
+            } else {
+                $gnuplot_input .= "\"\%.".$axis{'yformat'}."\"\n";
+            }
+        }
 	$gnuplot_input .= "set xrange \[$axis{'xmin'}:$axis{'xmax'}\]\n";
 	$gnuplot_input .= "set yrange \[$axis{'ymin'}:$axis{'ymax'}\]\n";
     }
@@ -1123,23 +1594,35 @@ sub write_gnuplot_file {
     my $label;
     foreach $label (@labels) {
 	$gnuplot_input .= 'set label "'.$label->{'text'}.'" at '.
-	    $label->{'xpos'}.','.$label->{'ypos'}.' '.$label->{'justify'}.' font "Helvetica,'.$pt.'pt"'.$/ ;
+                          $label->{'xpos'}.','.$label->{'ypos'};
+        if ($label->{'rotate'} ne '') {
+            $gnuplot_input .= ' rotate by '.$label->{'rotate'};
+        }
+        $gnuplot_input .= ' '.$label->{'justify'};
+
+        if ($target eq 'tex') {
+	    $gnuplot_input .=' font "'.$font_properties->{'printname'}.','.$fontsize.'pt"' ;
+        }
+        $gnuplot_input .= $/;
     }
     if ($target eq 'tex') {
-        $gnuplot_input .="set size 1,".$plot{'height'}/$plot{'width'}*1.38;
+        $gnuplot_input .="set size 1,".$Apache::lonplot::plot{'height'}/$Apache::lonplot::plot{'width'}*1.38;
         $gnuplot_input .="\n";
-        }
+    }
     # curves
     $gnuplot_input .= 'plot ';
     for (my $i = 0;$i<=$#curves;$i++) {
 	$curve = $curves[$i];
 	$gnuplot_input.= ', ' if ($i > 0);
+	if ($target eq 'tex') {
+	    $curve->{'linewidth'} *= 2;
+	}
 	if (exists($curve->{'function'})) {
 	    $gnuplot_input.= 
 		$curve->{'function'}.' title "'.
 		$curve->{'name'}.'" with '.
                 $curve->{'linestyle'};
-            $gnuplot_input.= ' linewidth 4 ' if ($target eq 'tex');
+
             if (($curve->{'linestyle'} eq 'points')      ||
                 ($curve->{'linestyle'} eq 'linespoints') ||
                 ($curve->{'linestyle'} eq 'errorbars')   ||
@@ -1148,7 +1631,19 @@ sub write_gnuplot_file {
                 ($curve->{'linestyle'} eq 'xyerrorbars')) {
                 $gnuplot_input.=' pointtype '.$curve->{'pointtype'};
                 $gnuplot_input.=' pointsize '.$curve->{'pointsize'};
+            } elsif ($curve->{'linestyle'} eq 'filledcurves') { 
+                $gnuplot_input.= ' '.$curve->{'limit'};
+            } elsif ($curve->{'linetype'} ne '' &&
+                     $curve->{'linestyle'} eq 'lines') {
+                $gnuplot_input.= ' linetype ';
+                $gnuplot_input.= $linetypes{$curve->{'linetype'}};
+                $gnuplot_input.= ' linecolor rgb "';
+                # convert color from xaaaaaa to #aaaaaa
+                $curve->{'color'} =~ s/^x/#/;
+                $gnuplot_input.= $curve->{'color'}.'"';
             }
+            $gnuplot_input.= ' linewidth '.$curve->{'linewidth'};
+
 	} elsif (exists($curve->{'data'})) {
 	    # Store data values in $datatext
 	    my $datatext = '';
@@ -1167,12 +1662,11 @@ sub write_gnuplot_file {
 	    }
 	    #   write file
 	    print $fh $datatext;
-	    close ($fh);
+	    close($fh);
 	    #   generate gnuplot text
 	    $gnuplot_input.= '"'.$datafilename.'" title "'.
 		$curve->{'name'}.'" with '.
 		$curve->{'linestyle'};
-            $gnuplot_input.= ' linewidth 4 ' if ($target eq 'tex');
             if (($curve->{'linestyle'} eq 'points')      ||
                 ($curve->{'linestyle'} eq 'linespoints') ||
                 ($curve->{'linestyle'} eq 'errorbars')   ||
@@ -1181,11 +1675,23 @@ sub write_gnuplot_file {
                 ($curve->{'linestyle'} eq 'xyerrorbars')) {
                 $gnuplot_input.=' pointtype '.$curve->{'pointtype'};
                 $gnuplot_input.=' pointsize '.$curve->{'pointsize'};
+            } elsif ($curve->{'linestyle'} eq 'filledcurves') { 
+                $gnuplot_input.= ' '.$curve->{'limit'};
+            } elsif ($curve->{'linetype'} ne '' &&
+                     $curve->{'linestyle'} eq 'lines') {
+                $gnuplot_input.= ' linetype ';
+                $gnuplot_input.= $linetypes{$curve->{'linetype'}};
+                $gnuplot_input.= ' linecolor rgb "';
+                # convert color from xaaaaaa to #aaaaaa
+                $curve->{'color'} =~ s/^x/#/;
+                $gnuplot_input.= $curve->{'color'}.'"';
             }
+                $gnuplot_input.= ' linewidth '.$curve->{'linewidth'}; 
 	}
     }
     # Write the output to a file.
-    my $fh=Apache::File->new(">$tmpdir$filename.data");
+    open (my $fh,">$tmpdir$filename.data");
+    binmode($fh, ":utf8");
     print $fh $gnuplot_input;
     close($fh);
     # That's all folks.
@@ -1196,7 +1702,7 @@ sub write_gnuplot_file {
 sub check_inputs {
     ## Note: no inputs, no outputs - this acts only on global variables.
     ## Make sure we have all the input we need:
-    if (! %plot) { &set_defaults(\%plot,\%gnuplot_defaults); }
+    if (! %Apache::lonplot::plot) { &set_defaults(\%Apache::lonplot::plot,\%gnuplot_defaults); }
     if (! %key ) {} # No key for this plot, thats okay
 #    if (! %axis) { &set_defaults(\%axis,\%axis_defaults); }
     if (! defined($title )) {} # No title for this plot, thats okay