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The dm Fonts and DVF.EXE (Version 0.4)
TeX 3.0 cannot reach its full potential until it has the appropriate fonts.
In time new fonts including acccented characters as true characters rather
than composites will be generated. For the present though, one can make do
with virtual fonts based on the cm fonts. As a step in this direction, 55
dm (dyslexic modern) virtual fonts have been created from TeX text mapped
cm fonts. These include 58 characters referenced by numbers in the range
192 to 255. The character number has been based on ISO 8859/1, details of
which were sent to me by Chris Thompson. The TeX community needs urgently
to establish a decent standard for character mappings 128-255. The 58
additional characters in the dm fonts are either single characters remapped
or character pairs possibly with positioning. TeX was used with the fonts at
16pt to obtain character dimensions, which avoids some possible rounding
problems. The width of the virtual character is exactly the same as the width
of the last character in its expansion. This simplifies DVI-DVI conversion.
Kerning for the new characters is based on the principal character in the
virtual character. Thus each accented letter is treated in terms of kerns
as though it were the unaccented letter. Those who wish more subtle kerns
may modify the TFM files with TFtoPL and PLtoTF. The check sum of the dm
font is obtained from that of the corresponding cm font by adding 4.
In addition to the dm virtual fonts, this distribution also provides
the DVI-DVI translation program DVF.EXE. It has the 55 VF's built in.
For a DVI file which contains references to the dm fonts, one may run
DVF on this file to translate these references into their cm equivalents.
These are experimental fonts and programs. Please send comments, bug reports,
etc., to
Wayne Sullivan
WSULIVAN@IRLEARN.bitnet
(14 May 1990)
Please destroy the earlier code page 850 version of DVF. DVF03 has incorrect
kerning for certain characters.
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