23) How do I use PostScript fonts with LaTeX?

    There are at least four problems with replacing the standard Computer
    Modern fonts used in LaTeX:
    1. The fonts are defined in a long set of macros in lfonts.tex
       which are not easy to understand and change;
    2. You must have a device driver capable of understanding the idea
       of fonts built into the printer (all the drivers referred to in
       question 2 have this capability).
    3. The default layout of the Adobe fonts is NOT the same as that for
       the CMR fonts, so you will not get the right characters (ligatures
       being a good example).
    4. The official names of the PostScript fonts are long and in both 
       upper and lower cases. While this presents no problems for Unix,
       it can cause problems with files under DOS, VMS, etc.

    The first problem can be solved by one of:
    1. Going through lfonts.tex and changing references to CMR to some
       new font, e.g., times.
    2. Overloading the definitions of \bf, \rm, etc., with new font 
       families.
    3. Using the New Font Selection Scheme (see question 35).
    
    The second problem is quickly disappearing since all recent DVI to 
    PostScript drivers have adequate facilities. The third problem can
    be solved by:
    1. Changing TeX macros, etc., so the Adobe font layouts are
       expected.
    2. Re-encoding the Adobe fonts in a PostScript prolog so they
       conform to TeX standards.
    3. Using ``virtual fonts'' to perform the mapping between Adobe and
       TeX layouts. Tomas Rokicki's dvips driver (see question 2) has 
       examples of this.

    A definitive statement on short names for Adobe fonts is expected soon.
    Meanwhile, there is not much agreement on how to compress 
    Garamond-LightItalic into 8 characters.