\let\@mainsize=\twelvepoint
\twelvepoint
\def\@parskip{4.5pt plus 1.2pt}
\parskip\@parskip
\parindent 11pt



% Environment names for type styles
% Note that the \@end... commands are left undefined, since
% TeX turns an undefined \begincsname ... \endcsname into \relax

\def\@beginroman{\rm\ignorespaces}
\def\@beginitalic{\it\ignorespaces}
\def\@begintypewriter{\tt\ignorespaces}
\def\@beginboldface{\bf\ignorespaces}
\def\@beginsansserif{\sf\ignorespaces}

% type size commands

\def\@beginnormal{\twelvepoint\def\@parskip{5pt plus 1.3pt}\parskip\@parskip
    \ignorespaces}

\def\tit{\twelvepoint\def\@parskip{5pt plus 2pt}\parskip\@parskip}
\def\@begintitle{\tit\ignorespaces}

\def\Tit{\eighteenpoint}
\def\@beginTitle{\Tit\ignorespaces}

\def\@beginsmall{\tenpoint\def\@parskip{4pt plus 1pt}\parskip\@parskip
      \ignorespaces}
\def\@beginfootnotesize{\ninepoint
     \def\@parskip{3.5pt plus 1pt}\parskip\@parskip\ignorespaces}

\def\@beginscriptsize{\eightpoint
     \def\@parskip{3.1pt plus 1pt}\parskip\@parskip\ignorespaces}