🚀 go-pugleaf

Can someone describe the GDOS font file format (a C header file would probably
be great)?  Unless I'm missing it in the documentation available to me (MWC
2.0.1, Sozobon C, Abacus GEM and Internals, and ProGEM), my only references to
this documentation say to look in "the VDI manual", which I assume is part of
the Atari developer's kit.  (If I'm missing it, a pointer to read chapter
such-and-such would do.)

Several random related points.  What I'm trying to do is add characters to the
font files shipped with Timeworks DTP.  Since the characters I'm most
interested in are Spanish alphabet characters, I don't think I'd have a problem
contorting existing characters into the appropriate format given I knew what
the format is.  I'm correct, right, in believing these characters aren't
available in the distributed fonts.

Also, I've seen references in STart and other places praising G+Plus.  Does
anyone have a quick review of this?  I understand it's faster than GDOS (does
it have higher quality (i.e. fewer bugs and/or increased performance)?), though
I don't find GDOS's speed to be real annoying (I don't use a lot of graphics in
DTP, which I understand is a big part of the problem).  Also, how much should I
want to get Fontz, given that increasing my supply of fonts is a desire, but I
won't steal them (I have access to Macintoshes, so if there are good PD fonts
available for them, that's a plus).