-v prints the version number.
All other options changes one of the parameters that is used to derive the heights and depths. Like the existing quantities in the font file, each value is in inches/res for a font whose point size is unitwidth. param must be one of:
x-height
The height of lowercase letters without ascenders such as x.
fig-height
The height of figures (digits).
asc-height
The height of characters with ascenders, such as b, d or l.
body-height
The height of characters such as parentheses.
cap-height
The height of uppercase letters such as A.
comma-depth
The depth of a comma.
desc-depth
The depth of characters with descenders, such as p,q, or y.
body-depth
The depth of characters such as parentheses.
addftinfo makes no attempt to use the specified parameters to guess the unspecified parameters. If a parameter is not specified the default will be used. The defaults are chosen to have the reasonable values for a Times font.