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- %
- % some of the old Tbase paragraphing macros (built on Plain TeX)
- %
- % These macros demonstrate common uses for the
- % \hangindent, \hangafter, \indent, \noindent, \everypar,
- % \lastbox, and \the commands.
- %
-
- \catcode`\@=11\relax % make @ a letter for use in macro names
-
- %
- % N.B. These macros do not set a ``paragraphing mode,'' as
- % they used to in Tbase; they apply only to the immediately
- % following paragraph.
- %
- % The right way to use one of the macros is, e.g.,
- %
- % \ivp This is an inverted paragraph...
- % and so on, and so on...
- %
- \def\ivp {% inverted paragraph, all but 1st line indented
- \hangindent \parindent
- \hangafter \@ne
- \noindent}
-
- \def\ip {% indented paragraph, all lines indented
- \hangindent \parindent
- \hangafter \@ne
- \indent}
-
- \def\ftp #1{% flush-tagged paragraph, like \ip but with tag on left margin
- \hangindent \parindent
- \hangafter \@ne
- \noindent \hbox to\parindent{#1\hfil}\ignorespaces}
-
- \def\atp #1{% adjoint-tagged par, like \ftp but tag is next to first line
- \hangindent \parindent
- \hangafter \@ne
- \indent \llap{#1\enspace}\ignorespaces}
-
- \def\bpar {% bullet-tagged paragraph
- \ftp{$\bullet$}}
-
-
- %
- % vest paragraphs:
- % After an interruption in the running text (such as a section
- % title or in-line illustration), it is customary not to indent
- % the first line of the next paragraph. The macro \vp arranges
- % for this to be the case by making sure that \unindent gets
- % called as soon as the paragraph starts. \unindent simply
- % removes the \indent box that TeX automatically puts at the
- % start of every paragraph (except those which start with
- % \noindent).
- %
- \def\unindent {%
- \setbox0=\lastbox} % get the indent box and discard it
-
- \def\vp {%
- \everypar{\unindent\everypar{}}}
-
-
- %
- % the \heading macro puts out a bold-faced unindented heading,
- % and then calls \vp to insure that the next paragraph does not
- % start with an indentation.
- % No break is allowed between the heading and the paragraph.
- %
- \def\heading #1{%
- \vskip 1ex
- {\bf\noindent #1\par}
- \nobreak
- \vskip.5ex
- \vp}
-
-
- %
- % These next two macros are a convenient way of turning
- % indentation off and then on again. The macro \fp
- % sets \parindent to 0, but not before defining the macro \pp so
- % that it restores \parindent to what it was. The \edef command
- % in conjunction with the \the command actually put the
- % value of \parindent into the text of the \pp command.
- % Do \fp\show\pp to see what this means.
- %
- \def\fp {\edef\pp{\parindent=\the\parindent}\parindent=\z@}
- \let\pp=\relax
-
-
- % make @ back into a non-letter
- \catcode`\@=12\relax
-