\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}