%
% "a4j" document style option.
%
\@ifundefined{@twoc}{%
\topmargin-.3in
\oddsidemargin0pt
\evensidemargin0pt
\parindent1zw
\@ifundefined{@lands}{\ifcase \@ptsize
    % mods for 10 pt
    \textheight55\baselineskip
    \textwidth60zw
\or % mods for 11 pt 
    \textheight53\baselineskip
    \textwidth55zw
\or % mods for 12 pt
    \textheight50\baselineskip
    \textwidth50zw
\fi}{\ifcase\@ptsize
    % mods for 10 pt
    \textheight35\baselineskip
    \textwidth93zw
\or % mods for 11 pt 
    \textheight35\baselineskip
    \textwidth84zw
\or % mods for 12 pt
    \textheight33\baselineskip
    \textwidth77zw
\fi}
\advance\textheight\topskip
\def\@ps@{3}}{\@warning{Sorry, I igunored `b4j' style}}