/usr/share/doc/texlive-doc/plain/font-change/default-amssymbols.tex is in texlive-plain-extra 2014.20141024-1.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 | % The author of this work is Amit Raj Dhawan
% This work has been released under
% Creative Commons Attribution-Share Alike 3.0 Unported License
% on July 19, 2010. For details visit:
% http://creativecommons.org/licenses/by-sa/3.0/.
%
\def\loadmsam{\font\tenmsa=msam10 \font\sevenmsa=msam7 \font\fivemsa=msam5
\fam\msafam \textfont\msafam=\tenmsa \scriptfont\msafam=\sevenmsa \scriptscriptfont\msafam=\fivemsa
\global\let\loadmsam\empty}%
\loadmsam
%
\def\loadmsbm{\font\tenmsb=msbm10 \font\sevenmsb=msbm7 \font\fivemsb=msbm5
\fam\msbfam \textfont\msbfam=\tenmsb \scriptfont\msbfam=\sevenmsb \scriptscriptfont\msbfam=\fivemsb
\global\let\loadmsbm\empty}%
\loadmsbm
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