addftinfo

Add font metrics to a troff font file

$ addftinfo [resolution] [unitwidth] [font] < [input.tfm] > [output.tfm]

$ addftinfo 300 300 TR < times-roman.tfm > TR.tfm

addftinfo [-v] resolution unitwidth font < input > output

addftinfo is a groff (GNU troff) utility that adds computed font metric information to troff font files. It reads a font file, calculates additional metrics needed for typesetting, and outputs an enhanced font file.
The tool is typically used as part of the font installation process for groff, adding metrics like character heights and depths that aren't always present in basic font files.

resolution

Device resolution in dots per inch

Point size at which the font unitwidth was designed

Groff font name (R, I, B, BI, etc.)

Print version information

The input must be a valid troff font description file. Output metrics are computed approximations and may not perfectly match the actual font rendering. This tool is specific to the groff typesetting system.

addftinfo is part of GNU groff, which was developed starting in 1989 as a free replacement for the Unix troff typesetting system. The utility was created to simplify font installation.

groff(1), afmtodit(1), tfmtodit(1)