where ps_char is the PostScript name of the character and groff_char is the groff name of the character (as used in the groff font file.) The same ps_char can occur multiple times in the file; each groff_char must occur at most once. font is the groff name of the font. If a PostScript character is in the encoding to be used for the font but is not mentioned in map_file then afmtodit will put it in the groff font file as an unnamed character, which can be accessed by the \N escape sequence in troff. The groff font file will be output to a file called font.
If there is a downloadable font file for the font, it may be listed in the file /usr/local/gnu/lib/groff/font/devps/download; see grops.1
If the -i option is used, afmtodit will automatically generate an italic correction, a left italic correction and a subscript correction for each character (the significance of these parameters is explained in groff_font.5 these parameters may be specified for individual characters by adding to the afm_file lines of the form:
italicCorrection ps_char n
leftItalicCorrection ps_char n
subscriptCorrection ps_char n
where ps_char is the PostScript name of the character, and n is the desired value of the corresponding parameter in thousandths of an em. These parameters are normally needed only for italic (or oblique) fonts.
Also generate a subscript correction equal to the product of the tangent of the slant of the font and four fifths of the x-height of the font. If this would result in a subscript correction greater than the italic correction, use a subscript correction equal to the italic correction instead.
Also generate a left italic correction for each character equal to n thousandths of an em plus the amount by which the left edge of the character's bounding box is to the left of the character's origin. The left italic correction may be negative.
This option is normally needed only with italic (or oblique) fonts. The font files distributed with groff were created using an option of -i50 for italic fonts.
Created by unroff & hp-tools. © by Hans-Peter Bischof. All Rights Reserved (1997).
Last modified 21/April/97