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groff: Font Directories

 
 2.4 Font Directories
 ====================
 
 Basically, there is no restriction how font files for 'groff' are named
 and how long font names are; however, to make the font family mechanism
 work (Font Families), fonts within a family should start with
 the family name, followed by the shape.  For example, the Times family
 uses 'T' for the family name and 'R', 'B', 'I', and 'BI' to indicate the
 shapes 'roman', 'bold', 'italic', and 'bold italic', respectively.  Thus
 the final font names are 'TR', 'TB', 'TI', and 'TBI'.
 
    All font files are kept in the "font directories", which constitute
 the "font path".  The file search functions always append the directory
 'dev'NAME, where NAME is the name of the output device.  Assuming, say,
 DVI output, and '/foo/bar' as a font directory, the font files for
 'grodvi' must be in '/foo/bar/devdvi'.
 
    The elements of the search path for font files are (in that order):
 
    * The directories specified with 'gtroff''s or 'groff''s '-F' command
      line option.  All device drivers and some preprocessors also have
      this option.
 
    * The directories given in the 'GROFF_FONT_PATH' environment
      variable.
 
    * A site-specific directory and the main font directory; the default
      locations are
 
           /usr/local/share/groff/site-font
           /usr/local/share/groff/1.22.3/font
 
      assuming that the version of 'groff' is 1.22.3, and the
      installation prefix was '/usr/local'.  It is possible to fine-tune
      those directories during the installation process.
 

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