FONTS -- Standard Character Fonts Supplied with each Node.       83/08/15


  A "font" is data that graphically describe a set of related character
  images.  Fonts are stored in named files on a node.  A font file
  contains exactly one font.

  We supply three kinds of fonts in the directory /SYS/DM/FONTS.  They are:

  1. Fixed width fonts.  These correspond to the fonts typically found on
     "dumb terminals".  All the characters are the same width.  Several
     sizes are available.  These fonts are named according to their width
     in raster units, and their height above the base-line, again in raster
     units.  Italic and boldface versions have ".i" or ".b" appended;
     inverted (reverse-video) fonts have ".iv" appended.  Included in these
     fonts' total size is intercharacter spacing (two raster units in all
     cases), interline spacing (one to three raster units), and descenders
     (parts of characters, such as "y", that go below the base-line)
     (three to five raster units).  Table 1 lists the available fixed width
     fonts, and their actual total sizes.


              Table 1.  Fixed Width Fonts

                Total Width  Total Height

        f5x7       7           11
        f5x7.iv    7           11   inverted version of f5x7
        f5x9       7           14   same as std.19L
        f5x9.iv    7           14   inverted version of f5x9
        f7x13      9           19   same as std
        f7x13.i    9           19   italic version of std.
        f7x13.b    9           19   bold version of std.
        f7x13.iv   9           19   inverted version of std.
        legend     9           19   same as f7x13 but with pixel values
                                    inverted, for window legends.
        f9x15      11          23
        f9x15.iv   11          23   inverted version of f9x15


  2. Proportional spaced fonts.  In these fonts the characters have different
     widths.  They can be used in typesetting and advanced text processing
     applications.  We do not currently offer applications which utilize
     these fonts, although the DM will properly display and edit text using
     these fonts.  Their names include the type style and the "point" size,
     where one point is 1/72 inch.  Proportional spaced fonts currently
     available are:

       nonie.r.16       a large, attractive, block letter font
       r.12             regular,
       i.12             italic,
       b.12             and bold versions of a roman font
       old_english.36   a very large font


  3. Special purpose fonts.  Applications programs use such special fonts
     in a variety of ways.  The font editor (type HELP EDFONT) can be used
     to design such customized fonts.  As an example, the CHESS.36 font is
     included among the distributed fonts.  (The number 36 indicates the
     font's point size.)


  The naming conventions for fonts have evolved over time.  For this
  reason, a number of links have been made within the /SYS/DM/FONTS
  directory to preserve compatibility with older names.


RELATED TOPICS

  More information is available.  Type:

    - HELP FL
      for details about loading fonts for use in pads.

    - HELP EDFONT
      for details about the character font editor.