% \iffalse meta-comment
%<*package>
% \begin{macrocode}
\def\bordermatrix#1{\begingroup
\setbox\tw@\hbox{$\kern\wd\@ne\left(\kern-\wd\@ne
\vcenter{\kern-\ht\@ne\unvbox\z@}\,\right)$}%
\endgroup}
\def\@bBigg@#1#2{{\hbox{$\left#2\vcenter to#1{}\right.$}}}
\setbox\z@\hbox{$\left#2\right#4$}%
% \end{macrocode}
%</package>
% \fi