Complete Linux Command Reference - David Reichwein - 1997.
addftinfo reads a troff font file and adds some additional font-metric information that is used by the groff system. The font
file with the information added is written on the standard output. The information added is guessed using some parametric
information about the font and assumptions about the traditional troff names for characters. The main information added
is the heights and depths of characters. The res and unitwidth arguments should be the same as the corresponding parameters
in the DESC file; font is the name of the file describing the font; if font ends with I, the font will be assumed to be italic.
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