I am trying to correct the ps.map help page to list available
PostScript fonts. Currently it indicates the that standard GRASS display
fonts should be used, which is incorrect. (romans, gothgbt, etc)
Is there a canonical list of minimum supported PS fonts? I found these
but something official would be nice.
I don't think there's a standard, but it's usually safe to assume the
existence of Times, Helvetica and Courier (including bold/italic
versions) and Symbol.