/usr/share/tth/amsppt.sty is in tth-common 4.12+ds-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 | % Some amsppt formating macros simplified for TtH
% Those with names the same as Plain TeX macros will work ONLY if
% they are used without a following ``{''. Otherwise they are interpreted
% as in Plain.
% (c) 1998 Ian Hutchinson.
\def\title#1\endtitle{\title{#1}}
\def\author#1\endauthor{\author{#1}}
\def\address#1\endaddress{\address{#1}}
\def\date#1\enddate{\date{#1}}
\def\thanks#1\endthanks{\\thanks{#1}}
\def\abstract{\begin{abstract}}
\def\endabstract{\end{abstract}}
\def\email#1\endemail{\href{mailto:#1}{#1}}
\def\head#1\endhead{\section*{#1}}
\def\subhead#1\endsubhead{\subsection*{#1}}
\def\subsubhead#1\endsubsubhead{\subsubsection*{#1}}
\def\block{\begin{quote}}
\def\endblock{\end{quote}}
\def\roster{\begin{description}}
\def\endroster{\end{description}}
\def\proclaim#1{{\bf #1}\begingroup}
\def\endproclaim{\endgroup\par}
\def\matrix{\begin{array}{dummy}}
\def\endmatrix{\end{array}}
\def\pmatrix{\left(\begin{array}{dummy}}
\def\endpmatrix{\end{array}\right)}
\def\bmatrix{\left[\begin{array}{dummy}}
\def\endbmatrix{\end{array}\right]}
\def\vmatrix{\left|\begin{array}{dummy}}
\def\endvmatrix{\end{array}\right|}
\def\Vmatrix{\left|\begin{array}{dummy}}
\def\endVmatrix{\end{array}\right|}
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