% math fonts:
\@ifundefined{new@fontshape}%
{\@latexerr{This style option to use PostScript fonts can only be used%
                  with the new font selection scheme}\@eha%
      \endinput}{}
\message{Using PostScript Palatino font for math text}
%
\input psmath
%
\firstpsmathgroup{ppl}{m}{n}% palatino - roman
\secondpsmathgroup{ppl}{m}{it}% palatino - slanted
\thirdpsmathgroup{cmsy}{m}{n}% cmsy

%\new@mathversion\mv@psbold
%\define@mathgroup\mv@psbold{0}{ppl}{b}{n}
%\define@mathgroup\mv@psbold{1}{ppl}{b}{it}
%\define@mathgroup\mv@psbold{2}{cmsy}{b}{n}
%\def\boldmath{\@nomath\boldmath
%              \mathversion{psbold}}
\new@internalmathalphabet\mathbf\bffam{ppl}{b}{n}
\def\pbf{\family\rmdefault
    \series\bfdefault
    \shape\default@shape\selectfont\mathbf}