Subscripts and fonts: Embedded L^ATEX-like commands

In the label clickbox, a limited subset of rudimentary L^ATEX-like commands may be embedded in the string. These include:

• $\backslash$it (italic font)
• $\backslash$rm (roman font)
• $\backslash$gr (greek font)
• $\backslash$sf (sans serif font)
• $\backslash$tt (typewriter (courier) font)
• $\backslash$bf (boldface weight)
• $\backslash$med (medium weight)
• $\backslash$font fontname (specify font name, e.g. helvetica, times, etc.)
• $\backslash$size size (specify desired font size (xlsfonts provides a list))
• $\backslash$up distance (superscript)(moves remainder of string up by specified no. of pixels)
• $\backslash$down distance (subscript)(moves remainder of string down by specified no. of pixels)
• $\backslash$left distance (moves remainder of string left by specified no. of pixels)
• $\backslash$right distance (moves remainder of string right by specified no. of pixels)
• $\backslash$ $\backslash$A backslash character
• $\backslash$r (same as ``right'')
• $\backslash$l (same as ``left'')
• $\backslash$u (same as ``up'')
• $\backslash$d (same as ``down'')
• $\backslash$s (same as ``size'')

For example, the string

  
    before\it italic\rm roman\bf bold\rm

Embedded L^ATEXcommands in a label.

would produce:

When specifying a font, a font name should be specified that corresponds to the second part of an X-window fontname, for example:

  
     before \font courier  more text\font helvetica after

will print the label ``before more text after'' in 3 different fonts.

Greek letters can also be printed, for example:

  
     abc\size 14 \up 6 \gr abc

will print something like

abc $^{\alpha\beta\chi}$ .

In making superscripts, it may be helpful to preface the label with a ``down'' command. For example, the string:

  
    \gr\d14 2p\rm e\s14 \u9 -x\u5 2

would be rendered as:

Note: Font commands are cumulative, so a command like

  
    \tt a \rm b \gr c \it d

would probably give an error because on most systems there is no Italic Greek font. The correct command would be:

  
    \tt a \rm b \gr c \rm\it d

This would change the typeface back to Roman before changing it to Greek symbols.

Note: L^ATEX-like commands only work with the ``label'' command, and do not work when simply typing text on the image.