% pdcadobe.dtx -- documentation & source for pdcadobe.tex -*-tex-*-
%%%@TeX-document-file {
%%% title = "PDCADOBE -- Formatting Macros",
%%% filename = "$texmf/doc/plain/pdcmac/pdcadobe.dtx",
%%% version = "$Revision: 1.3 $",
%%% package = "pdcmac 1.0",
%%% date = "$Date: 1995/03/30 16:07:31 $",
%%% author = "P. Damian Cugley",
%%% email = "damian.cugley@comlab.ox.ac.uk",
%%% address = "Oxford University Computing Laboratory,"
%%% Parks Road, Oxford OX1 3QD, UK",
%%% abstract = "This document describes and is the source code for
%%% the TeX definitions file pdcadobe.tex.
%%% Running plain TeX on this file produces both the
%%% definitions file and the printed documentation.",
%%% copyright = "Copyright (c) 1995 P. Damian Cugley",
%%% copying = "This program is free software; you can redistribute
%%% it and/or modify it under the terms of the GNU
%%% General Public License as published by the Free
%%% Software Foundation; either version 2 of the License,
%%% or (at your option) any later version.",
%%% notice = "This program is distributed in the hope that it will
%%% be useful, but WITHOUT ANY WARRANTY; without even the
%%% implied warranty of MERCHANTABILITY or FITNESS FOR A
%%% PARTICULAR PURPOSE. See the GNU General Public
%%% License for more details.",
%%% notice = "You should have received a copy of the GNU General
%%% Public License along with this program; if not, write
%%% to the Free Software Foundation, Inc., 675 Mass Ave,
%%% Cambridge, MA 02139, USA.",
%%% codetable = "USASCII",
%%% dependencies = "pdccode.tex"
%%%}
%{{{ pdcadobe
%{{{ preamble
\relax
\input pdccode
\document
\rcs$Id: pdcadobe.dtx,v 1.3 1995/03/30 16:07:31 pdc Exp $\endrcs
\codefile{pdcadobe.tex}
%}}} preamble
%{{{ introduction
\author{P. Damian Cugley}
\title{PDCAdobe---Macros for using Adobe fonts}
\section{Introduction}
This document describes |pdcadobe.tex|, a collection of macros
for using Adobe's Standard Roman character set, via DVIPS's
variation on the \TeX\ Text encoding.
\notepar
You will need to use a different strategy if your PostScript
fonts adhere strictly to the \TeX\ Text conventions (the
conventions of Computer Modern Roman, described in {\it\TeX
book}\/ Appendix~F, and called OT1 by the \LaTeX~3 team), such
as the fonts generated with Fontinst.
\endnotepar
\subsec{New text symbols}
The new characters now available in text are:
$$\halign{\indent\tt\char`\\#1\hfil&\quad#\hfil\cr
quotesingle& typewriter-style apostrophe ({\tt\char"0D })\cr
quotedouble& typewriter-style double apostrophe ({\tt"})\cr
asciicircum& ASCII circumflex\cr
asciitilde& ASCII tilde\cr
}$$
\subsec{Use of the Symbol font}
The assumption is that one of the resons for using PostScript
fonts is that, if you stick to the `Adobe~35', the resulting
PostScript files are much smaller because no font bitmaps need
to be downloaded. On this assumption, Adobe's Symbol font is
used whenever possible, even when the Computer Modern symbol is
arguably prettier.
The Symbol font will need to have its own maths family, which by
convention this file expects to find defined as |\asyfam|.
\subsec{Composite letters}
\setbox0=\hbox{accent}
\edef\\{\vrule height\the\ht0 depth\the\dp0 width\the\wd0 \relax }
Composite letters are those made from some base letter and a
{\it mark}, for example {\it\'e}, {\it\"u}.\footnote*{`Composite
letters' is a euphemism for what English speakers usually refer
to as `\\ed letters', since the word `\\' tends to provoke
lectures to the effect that composite letters are not considered
to be `\\ed' in many of the lanuages in which they are used.}
In the Adobe Standard Roman character set, and hence in
|afm2tfm|'s encoding, the composite letters of ISO 8859--1 are
included as separate glyphs. These glyphs are accessed using
ligatures between mark glyphs and base letters (so that |^^13e|
in the manuscript file produces `\'e'). Unfortunately,
exploiting this is tricky if we also want to allow for composite
glyphs {\it not} included in the PostScript fonts.
The approach taken in these definitions is that \TeX's composite
letter commands (|\'|, |\"|, and friends) are left unchanged, so
that `|\'e|' works through \TeX's |\|\\ command. The magic
glyphs are available as commands with names like |\acuteglyph|
or via the Latin-1 special symbols, so that `|\acuteglyph e|' or
`|^^b4e|' (which might liik like `{\tt\char"13 e}' on the screen
if your computer uses Latin-1) produces `\'e' as a single glyph
(which might mean tha mark is better aligned). Finally, the
Latin-1 composite letters generate the single glyphs vial
ligatures, so that `|^^e9|' (which may well look like `{\tt\'e}'
on the screen) expands to `|\acuteglyph e|' and hence `\'e'.
\subsec{About this document}
The definitions file and the printed documentation are both in
|pdcadobe.dtx|, a `documented \TeX\ macros' file\footnote*{The
\LaTeX~2e distribution uses files with the `|dtx|' suffix for
similar purposes.} which, when processed by plain \TeX,
generates a fresh copy of |pdcadobe.tex| in the current directory
in addition to the |dvi| file. This ensures that the printed
documentation and the code it describes are identical. The
|dtx| file uses the macros in |pdccode.tex|.
%}}} introduction
%{{{ File identification
\section{File identification}
Nowadays, macro files start with some comments identifying the
file.
\code
\|\% pdcadobe.tex \fileversion~\filedate~-- macros for Adobe style fonts
|
|%%%@TeX-definition-file {
|%%% filename = "$texmf/tex/plain/pdcmac/pdcadobe.tex",
\|\%\%\% version~~~~~~~~= "\fileversion",
\|\%\%\% date~~~~~~~~~~~= "\filedate",
|%%% package = "pdcmac 1.0",
|%%% author = "P. Damian Cugley",
|%%% email = "damian.cugley@comlab.ox.ac.uk",
|%%% address = "Oxford University Computing Laboratory,
|%%% Parks Road, Oxford OX1 3QD, UK",
|%%% codetable = "USASCII",
|%%% keywords = "TeX, plain TeX, macros",
|%%% supported = "Maybe",
|%%% abstract = "Formatting macros for Adobe-style fonts.
|%%% This file was generated by running
\|\%\%\%~~~~~~~~~~~~~~~~~~~plain TeX on \jobname.dtx",
|%%% copyright = "Copyright (c) 1991-1995 P. Damian Cugley",
|%%% copying = "DO NOT DISTRIBUTE THIS FILE.
\|\%\%\%~~~~~~~~~~~~~~~~~~~Distribute \jobname.dtx only as part of the
|%%% package it came in.",
|%%% dependencies = "",
|%%% }
|
\|\\message\{\fileversion~<pdc \filedate>\}
|
\endcode
%}}} file id
%{{{ chardefs
\section{Characters available in all styles}
The following characters are in the fonts generated by
|afm2tfm|, so are available in all styles.
\code
|\chardef\quotesingle="0D
|\chardef\quotedouble="22
|\chardef\_="5F
|\chardef\asciicircum="80
|\chardef\asciitilde="81
|\chardef\cents="A2
|\chardef\pounds="A3
|\chardef\fractionslash="A4
|\chardef\yen="A5
|\chardef\florin="A6
|\chardef\S="A7
|\chardef\currency="A8
|\chardef\lguillemet="AB
|\chardef\dag="B2
|\chardef\ddag="B3
|\chardef\gbdecimal="B4
|\chardef\P="B6
|\chardef\bullet="B7
|\chardef\quotesinglebase="B8
|\chardef\quotedblbase="B9
|\chardef\rguillemet="BB
|\chardef\ellipsis="BC \def\dots{\ellipsis\thinspace}
|\chardef\permille="BD
|\chardef\orda="E3
|\chardef\ordo="EB
\endcode
Some glyphs, like |\fractionslash| and |\gbdecimal| may well be
used in maths mode, but are defined using |\chardef| to allow
them to be used in text as well.
The definition of |\dots| adds the thin space that is included
in plain \TeX's |\dots|, so that `|\dots,|' will have a thin
space between the third full stop and the comma.
\subsec{Maths stuff}
These symbols are available in maths mode, coming from the |\rm|
font (fam~0).
\code
|\mathchardef\backslash="205C
|\edef\lbrace{\delimiter"407B308} \let\{=\lbrace \mathcode`\{="407B
|\mathcode`\|="707C \mathchardef\mid="307C
|\edef\rbrace{\delimiter"507D309} \let\}=\rbrace \mathcode`\}="507D
|\mathchardef\sim="3081
|\mathchardef\cdot="20B4
|\mathchardef\bullet="20B7
|\mathchardef\ldots="60BC
\endcode
There {\it are} extensible braces in the Adobe Symbol font,
which I~would have used for the |\lbrace| and |\rbrace|
commands. Unfortunately, the TFM file generated with |afm2tfm|
seems to lack the special information that makes extensible
characters work, so the |cmex10| glyphs must be used instead.
\subsec{Marks for composite letters}
Some common accented letters can be got by printing the accent
glyph before the letter glyph. However not all combinations
will work, so I~have left plain \TeX's definitions in place.
For later reference, the glyphs used for the accents are given
names.
\code
|\chardef\graveglyph="12
|\chardef\acuteglyph="13
|\chardef\hookglyph="14
|\chardef\breveglyph="15
|\chardef\macronglyph="16
|\chardef\ringglyph="17
|\chardef\cedillaglyph="18
|\chardef\circumglyph="5E
|\chardef\tildeglyph="7E
|\chardef\twodotsglyph="7F
|\chardef\dotglyph="C7
|\chardef\hungarianglyph="CD
|\chardef\ogonekglyph="CE
\endcode
Some special letters and marks have been moved to new slots.
\code
|\chardef\AA="C8 \chardef\aa="98
|\chardef\L="E8 \chardef\l="F8
|\def\.#1{\accent\dotglyph #1}
|\def\H#1{\accent\hungarianglyph"CD #1}
\endcode
%}}} chardefs
%{{{ adobe sy
\section{Adobe Symbol font characters}
Most of Adobe's Symbol font's glyphs exist already in one of the
maths fonts. Nevertheless I~think it makes sense to use them
whenever possible, because if it so happens that none of the
glyphs in the maths fonts are used, the bitmaps for the fonts
may be omitted from the PostScript file, making it much smaller.
For these definitions to work, there must be a family |\asyfam|
and font nickname |\asy|.
\code
|\ifx\asyfam\UNDEFINED
| \newfam\asyfam
|\fi
\endcode
\subsec{Extracting the fam name}
\code
|\edef\\{\ifcase\asyfam 0\or 1\or 2\or 3\or 4\or 5\or 6\or 7\or
| 8\or 9\or A\or B\or C\or D\or E\or F\fi
|}
\endcode
Where plain \TeX's definition uses glyphs from the roman font,
I~have let the definition stand.
\code
|\mathchardef\forall="0\\22
|\mathchardef\exists="0\\24
|\mathchardef\suchthat="0\\27
|\mathcode`*="2\\2A
|\mathcode`,="6\\2C
|\mathcode`-="2\\2D
|\mathcode`.="2\\2E
|\mathcode`/="2\\2F
|\mathcode`<="3\\3C
|\mathcode`>="3\\3E
\smallbreak
|\mathchardef\cong="3\\40
|\mathchardef\Alpha="0\\41
|\mathchardef\Beta="0\\42
|\mathchardef\Chi="0\\43
|\mathchardef\Delta="0\\44
|\mathchardef\Epsilon="0\\45
|\mathchardef\Phi="0\\46
|\mathchardef\Gamma="0\\47
|\mathchardef\Eta="0\\48
|\mathchardef\Iota="0\\49
|\mathchardef\vartheta="0\\4A
|\mathchardef\Kappa="0\\4B
|\mathchardef\Lambda="0\\4C
|\mathchardef\Mu="0\\4D
|\mathchardef\Ni="0\\4E
|\mathchardef\Omicron="0\\4F
\smallbreak
|\mathchardef\Pi="0\\50
|\mathchardef\Theta="0\\51
|\mathchardef\Rho="0\\52
|\mathchardef\Sigma="0\\53
|\mathchardef\Tau="0\\54
|\mathchardef\varUpsilon="0\\55
|\mathchardef\varsigma="0\\56
|\mathchardef\Omega="0\\57
|\mathchardef\Xi="0\\58
|\mathchardef\Psi="0\\59
|\mathchardef\Zeta="0\\5A
%
|\mathchardef\therefore="3\\5C
%
|\mathchardef\perp="3\\5E
%
\smallbreak
%
|\mathchardef\alpha="0\\61
|\mathchardef\beta="0\\62
|\mathchardef\chi="0\\63
|\mathchardef\delta="0\\64
|\mathchardef\epsilon="0\\65
|\mathchardef\phi="0\\66
|\mathchardef\gamma="0\\67
|\mathchardef\eta="0\\68
|\mathchardef\iota="0\\69
|\mathchardef\varphi="0\\6A
|\mathchardef\kappa="0\\6B
|\mathchardef\lambda="0\\6C
|\mathchardef\mu="0\\6D
|\mathchardef\ni="0\\6E
|\mathchardef\omicron="0\\6F
\smallbreak
|\mathchardef\pi="0\\70
|\mathchardef\theta="0\\71
|\mathchardef\rho="0\\72
|\mathchardef\sigma="0\\73
|\mathchardef\tau="0\\74
|\mathchardef\upsilon="0\\75
|\mathchardef\varpi="0\\76
|\mathchardef\omega="0\\77
|\mathchardef\xi="0\\78
|\mathchardef\psi="0\\79
|\mathchardef\zeta="0\\7A
|\mathchardef\sim="3\\7E
%
\smallbreak
|\mathchardef\Upsilon="0\\A1
|\mathcode`'="0\\A2 \mathchardef\minutes="0\\A2
|\mathchardef\leq="3\\A3 \let\le=\leq
|\mathchardef\fractionslash="0\\A4
|\mathchardef\infinity="0\\A5
%
|\mathchardef\clubsuit="0\\A7
|\mathchardef\diamondsuit="0\\A8
|\mathchardef\heartsuit="0\\A9
|\mathchardef\spadesuit="0\\AA
|\mathchardef\leftrightarrow="3\\AB
|\mathchardef\leftarrow="3\\AC \let\gets=\rightarrow
|\mathchardef\uparrow="3\\AD
|\mathchardef\rightarrow="3\\AE \let\to=\rightarrow
|\mathchardef\downarrow="3\\AF
\smallskip
|\mathchardef\degrees="0\\B0
|\mathchardef\pm="2\\B1
|\mathchardef\seconds="0\\B2
|\mathchardef\geq="3\\B3 \let\ge=\geq
|\mathchardef\times="2\\B4
|\mathchardef\propto="3\\B5
|\mathchardef\partial="0\\B6
%
|\mathchardef\div="2\\B8
|\mathchardef\neq="3\\B9 \let\ne=\neq
|\mathchardef\equiv="3\\BA
|\mathchardef\approx="3\\BB
|\mathchardef\ldots="6\\BC
|\edef\arrowvert{\delimiter"0\\BD33C }
|\mathchardef\relbar"3\\BE
|\edef\crlf{\noexpand\mathexbox\\BF}
\smallbreak
|\mathchardef\aleph="0\\C0
|\mathchardef\Im="0\\C1
|\mathchardef\Re="0\\C2
|\mathchardef\wp="0\\C3
|\mathchardef\otimes="2\\C4
|\mathchardef\oplus="2\\C5
|\mathchardef\emptyset="0\\C6
|\mathchardef\cap="2\\C7
|\mathchardef\cup="2\\C8
|\mathchardef\supset="3\\C9
|\mathchardef\supseteq="3\\CA
|\mathchardef\nsubset="3\\CB
|\mathchardef\subset="3\\CC
|\mathchardef\subseteq="3\\CD
|\mathchardef\in="3\\CE
|\mathchardef\nin="3\\CF
\smallbreak
|\mathchardef\angle="0\\D0
|\mathchardef\nabla="0\\D1
|\edef\registered{\noexpand\mathhexbox\\D2}
|\edef\copyright{\noexpand\mathhexbox\\D3}
|\edef\trademark{\noexpand\mathhexbox\\D4}
|\mathchardef\prod="1\\D5
|\edef\sqrt{\radical"\\D6370 }
|\mathchardef\cdot="2\\D7
|\mathchardef\neg="0\\D8 \let\lnot=\neg
|\mathchardef\wedge="3\\D9 \let\land=\wedge
|\mathchardef\vee="3\\DA \let\lor=\vee
|\mathchardef\Leftrightarrow="3\\DB
|\mathchardef\Leftarrow="3\\DC
|\mathchardef\Uparrow="3\\DD
|\mathchardef\Rightarrow="3\\DE
|\mathchardef\Downarrow="3\\DF
\smallbreak
|\mathchardef\diamond="3\\E0
|\edef\langle{\delimiter"4\\E130A }
|\mathchardef\sum="1\\E5
|\edef\rangle{\delimiter"5\\F130B }
\endcode
(I haven't bothered redefining those delimiters based on parts of
large delimiters.)
%}}} adobe sy
%{{{ ISO 8859-1 support
\section{ISO 8859--1 input}
ISO~8859--1 (Latin-1) is the de facto standard character
encoding in a large numebr of countries, and so we shall try to
make a reasonable number of Latin-1 characters available.
\subsec{Symbols}
Those characters whose code is the same as the code of the
corresponding glyph are left alone (with catcode~12). For
example, |^^a3| (pounds sterling) is left alone.
Those that have an equivalent |\chardef| (or |\mathchardef|)
name are defined with |\let| (for example, |^^a4| is |\let| to
|\currency|). Those with an equivalent standard ligature use
that ligature. These conventions hopefully insulate these
definitions against changes in the encoding.
The characters that represent marks for composite
letters\footnote*{This phrase is used on the grounds that the
word {\it accent} tends to provoke lectures on ways in which
many composite letters do {\it not} represent accents in the
languages in which they are used.} will form ligatures with the
following letter---one may write `{\tt\char"7F u\char"18 c}' to
get `\"u\c c'.
I don't use |\declareactivechar| on these because they would not
work properly in verbatim text with catcode~12. (Extending
verbatim text to include Latin-1 will take a few definitions
along the same lines as |\ttlq| etc.).
\code
|\catcode`^^a0\active \let^^a0=~
|\catcode`^^a1\active \def^^a1{!`}
% A2
% A3
|\catcode`^^a4\active \let^^a4=\currency
% A5
% A6 XXX
% A7
|\catcode`^^a8\active \let^^a8=\twodotsglyph
|\catcode`^^a9\active \let^^a9=\copyright
|\catcode`^^aa\active \let^^aa=\orda
% AB
|\catcode`^^ac\active \let^^ac=\lnot
|\catcode`^^ad\active \let^^ad=\-
|\catcode`^^ae\active \let^^ae=\registered
|\catcode`^^af\active \let^^af=\macronglyph
\smallbreak
|\catcode`^^b0\active \let^^b0=\degrees
|\catcode`^^b1\active \let^^b1=\pm
|\catcode`^^b2\active \def^^b2{^2}
|\catcode`^^b3\active \def^^b3{^3}
|\catcode`^^b4\active \let^^b4=\acuteglyph
|\catcode`^^b5\active \let^^b5=\mu
% B6
|\catcode`^^b7\active \let^^b7=\gbdecimal
|\catcode`^^b8\active \let^^b8=\cedillaglyph
|\catcode`^^b9\active \def^^b9{^1}
|\catcode`^^ba\active \let^^ba=\ordo
% BB
|\catcode`^^bc\active \def^^bc{\frac14}
|\catcode`^^bd\active \def^^bd{\frac12}
|\catcode`^^be\active \def^^be{\frac34}
|\catcode`^^bf\active \def^^bf{?`}
\smallbreak
|\catcode`^^d7\active \let^^d7=\times
|\catcode`^^f7\active \let^^f7=\div
\endcode
\subsec{Composite letters}
The composite letters acer accessed via ligatures so that they
are immune to some possible changes in encoding.
\code
|\catcode`^^c0\active \def^^c0{\graveglyph A}
|\catcode`^^c1\active \def^^c1{\acuteglyph A}
|\catcode`^^c2\active \def^^c2{\circumglyph A}
|\catcode`^^c3\active \def^^c3{\tildeglyph A}
|\catcode`^^c4\active \def^^c4{\twodotsglyph A}
|\catcode`^^c5\active \def^^c5{\ringglyph A}
|\catcode`^^c6\active \let^^c6=\AE
|\catcode`^^c7\active \def^^c7{\cedillaglyph C}
|\catcode`^^c8\active \def^^c8{\graveglyph E}
|\catcode`^^c9\active \def^^c9{\acuteglyph E}
|\catcode`^^ca\active \def^^ca{\circumglyph E}
|\catcode`^^cb\active \def^^cb{\twodotsglyph E}
|\catcode`^^cc\active \def^^cc{\graveglyph I}
|\catcode`^^cd\active \def^^cd{\acuteglyph I}
|\catcode`^^ce\active \def^^ce{\circumglyph I}
|\catcode`^^cf\active \def^^cf{\twodotsglyph I}
\smallbreak
% |\catcode`^^d0\active \chardef^^d0="?? % DH
|\catcode`^^d1\active \def^^d1{\tildeglyph N}
|\catcode`^^d2\active \def^^d2{\graveglyph O}
|\catcode`^^d3\active \def^^d3{\acuteglyph O}
|\catcode`^^d4\active \def^^d4{\circumglyph O}
|\catcode`^^d5\active \def^^d5{\tildeglyph O}
|\catcode`^^d6\active \def^^d6{\twodotsglyph O}
|\catcode`^^d8\active \let^^d8=\O
|\catcode`^^d9\active \def^^d9{\graveglyph U}
|\catcode`^^da\active \def^^da{\acuteglyph U}
|\catcode`^^db\active \def^^db{\circumglyph U}
|\catcode`^^dc\active \def^^dc{\twodotsglyph U}
|\catcode`^^dd\active \def^^dd{\acuteglyph Y}
% |\catcode`^^de\active \def^^de{TH}
|\catcode`^^df\active \let^^df=\ss
\smallbreak
|\catcode`^^e0\active \def^^e0{\acuteglyph a}
|\catcode`^^e1\active \def^^e1{\graveglyph a}
|\catcode`^^e2\active \def^^e2{\circumglyph a}
|\catcode`^^e3\active \def^^e3{\tildeglyph a}
|\catcode`^^e4\active \def^^e4{\twodotsglyph a}
|\catcode`^^e5\active \def^^e5{\ringglyph a}
|\catcode`^^e6\active \let^^e6=\ae
|\catcode`^^e7\active \def^^e7{\cedillaglyph c}
|\catcode`^^e8\active \def^^e8{\graveglyph e}
|\catcode`^^e9\active \def^^e9{\acuteglyph e}
|\catcode`^^ea\active \def^^ea{\circumglyph e}
|\catcode`^^eb\active \def^^eb{\twodotsglyph e}
|\catcode`^^ec\active \def^^ec{\graveglyph i}
|\catcode`^^ed\active \def^^ed{\acuteglyph i}
|\catcode`^^ee\active \def^^ee{\circumglyph i}
|\catcode`^^ef\active \def^^ef{\twodotsglyph i}
\smallbreak
% |\catcode`^^f0\active \def^^f0{dh}
|\catcode`^^f1\active \def^^f1{\tildeglyph n}
|\catcode`^^f2\active \def^^f2{\graveglyph o}
|\catcode`^^f3\active \def^^f3{\acuteglyph o}
|\catcode`^^f4\active \def^^f4{\circumglyph o}
|\catcode`^^f5\active \def^^f5{\tildeglyph o}
|\catcode`^^f6\active \def^^f6{\twodotsglyph o}
|\catcode`^^f8\active \let^^f8=\o
|\catcode`^^f9\active \def^^f9{\graveglyph u}
|\catcode`^^fa\active \def^^fa{\acuteglyph u}
|\catcode`^^fb\active \def^^fb{\circumglyph u}
|\catcode`^^fc\active \def^^fc{\twodotsglyph u}
|\catcode`^^fd\active \def^^fd{\acuteglyph y}
% |\catcode`^^fe\active \def^^fe{th}
|\catcode`^^ff\active \def^^ff{\twodotsglyph y}
\endcode
%}}} ISO 8859-1 support
%{{{ other hacks
\section{Modifications to other PDCMAC macros}
For typewriter text, less drastic revision of the string is
necessary.
\code
|\def\ttminus{--{}}
|\let\ttcircum=\asciicircum
|\let\tttilde=\asciitilde
\endcode
Note that ASCII quote and backquote characters are still got
from accents because a `neutral' quotation mark is not adequate
for computer listings where both sorts of `quote mark' might be
appear, with different meanings.
%}}} other hacks
\endcodefile
\enddocument
\bye
%}}} pdcadobe.dtx
%Local variables:
%fill-prefix: "\t"
%fold-folded-p: t
%End: