------------------------------------------------------------

                     Description of the
               font setup for VTeX/Free v7.32
          
------------------------------------------------------------
                        preliminary edition as of 2001-06-07


Contents
--------
FM files
Aliasing files
Embedding the base fonts
`Faked' font for use with LaTeX



FM files
--------

The VTeX/Free distribution includes shell scripts to run
VTeX with the Plain or LaTeX formats in PDF or PostScript
mode.  These shell scripts specify the usage of the FM files
pdf.fm (for PDF mode) and ps.fm (for PostScript mode):

% file pdf.fm for VTeX/Free -- PDF mode
LOCAL-OS2 {
  TEXMF = "c:/texmf/"
  URW = "c:/gs/fonts/"
  }
LOCAL-LNX {
  TEXMF = "/usr/local/vtex/texmf/"
  URW = "/usr/share/ghostscript/fonts/"
  }
PSRENAME {
  fontname.fix
  }
A4FIXTABLE {
  a4type1.fix
  }
TYPE1 {
  tm-x..ali
  hv-x.ali
  pdfbase.ali
  cm.ali
  misc.ali
  micropress.ali
  cmbright.ali
  concrete.ali
  }
  
The file ps.fm differs only as to loading posbase.ali in
place of pdfbase.ali.

The variables TEXMF and URW _must_ be defined, because the
aliasing files will refer to them.  The default values, as
shown above, may need to be customized:  TEXMF must point to
the root directory of the TDS tree.  URW must point to the
directory of the Type 1 fonts, that come with Ghostscript.



Aliasing files
--------------
Each aliasing file refers to a certain set of fonts:

tm-x.ali       :  Times
hv-x.ali       :  Helvetica
pdfbase.ali    :  the rest of the Base 35, for PDF mode
posbase.ali    :  ditto, for PS mode
cm.ali         :  Computer Modern and related fonts
misc.ali       :  various other fonts supplied with VTeX/Free
micropress.ali :  MicroPress' TM-Math, HV-Math, IF-Math
cmbright.ali   :  CM Bright
concrete.ali   :  Concrete

The font map files assume that the base Type 1 fonts from
URW are provided in the directory $URW$, and that they have
their original (URW) names.  These fonts come with
Ghostscript, so VTeX/Free can safely rely on their presence.

The CM Bright, Concrete, TM-Math, HV-Math and IF-Math font
families are NOT distributed with VTeX/Free.  However, all
required font metrics, style files and aliasing files are
provided, so that the fonts can be installed easily, without
editing the configuration files.



Embedding the base fonts
------------------------
Whether or not the PostScript base fonts are downloaded into
the generated .ps and .pdf documents, is controlled by the
font map files used:

* In PostScript mode, the default behavior is to _not_ embed
  the Base 35 fonts, as specified through tm-x.ali, hv-x.ali
  and posbase.ali.
  
* In PDF mode, only the Base 14 font set is not embedded, as
  specified through tm-x.ali, hv-x.ali and pdfbase.ali.
  This is common behavior of most PDF-creating applications.

Acrobat 4 and above will, however, substitute Helvetica with
Arial and Times with TimesNewRomanPSMT, when displaying a
PDF file on screen or printing on a non-PostScript printer,
unless the document actually includes the fonts.  This is 
particularly bad, if you are using MicroPress' HV-Math or 
TM-Math fonts, since they were designed to blend with 
Adobe's originals or the corresponding "clones" provided 
by MicroPress.  

If you want to assure that your PDF documents look the same
way on all printers, you must configure VTeX to embed the
Times and Helvetica fonts.  This is easily done be editing
the FM file pdf.fm and replacing the default records for
tm-x.ali and hv-x.ali with the name of a different map file:

tm-x.ali  : do not embed Times (default)
tm-ea.ali : embed original Adobe Times
tm-em.ali : embed MicroPress' TM-Text for Times
tm-eu.ali : embed URW Nimbus for Times

hv-x.ali  : do not embed Helvetica (default)
hv-ea.ali : embed original Adobe Helvetica
hv-em.ali : embed MicroPress' HV-Text for Helvetica

* Embedding URW NimbusSans for Helvetica is deliberately NOT
  supported, because these fonts have a minor bug with the
  German sharp s (\ss).

* VTeX/Free does NOT include Adobe Times and Helvetica.  You
  have to purchase them or take them out of a product, which
  includes them, such as Acrobat 3. For use with VTeX, the 
  font files (.pfb) must reside in the directories

     texmf/fonts/type1/adobe/times 
  and
     texmf/fonts/type1/adobe/helvetic

  The font files must keep their original names, as supplied
  by Adobe, i.e.  tir_____.pfb, hv______.pfb etc.
  (lowercase!)  Do NOT rename them to the KB scheme!

  * MicroPress' TM-Text and HV-Text fonts are NOT
  distributed with VTeX/Free.  These fonts are part of the
  TM-Math and HV-Math distributions, version 1.51 and above.
  If you install these, embedding the Times or Helvetica
  text fonts is recommended.  It does not matter, whether
  you embed MicroPress' "clones" or Adobe's originals.

Note that there are no ready-made .ali files to configure 
the use of other fonts.  For instance, if you want to make 
VTeX use Adobe Palatino in place of URW Palladio, you will 
have to patch the files pdfbase.ali, posbase.ali and
fontname.fix---see the VTeX/Free manual!



`Faked' fonts for use with LaTeX
--------------------------------
The file texmf/vtex/config/preload.cfg issues a number of
\aliasfont commands to replace or `fake' various fonts,
which are required by LaTeX, but are not physically supplied
with VTeX/Free:  

* certain Computer Modern fonts: cmmib6, cmmib8, cmmib9,
  cmbsy6, cmbsy8, cmbsy9

* artificially slanted fonts used by the PSNFSS system, such
  as ptmro8r or eurmo10


== finis

