\long\def\@makecaption#1#2{%
   \vskip 10\p@
   \setbox\@tempboxa\hbox{#1: #2}%
   \ifdim \wd\@tempboxa >\hsize
       \unhbox\@tempboxa\par
     \else
       \hbox to\hsize{\hfil\box\@tempboxa\hfil}%
   \fi}

\hyper@pen{art1\@ptsize}
\if@twocolumn
 \hyper@pen{twocolum}
\fi

\if@titlepage
  \hyper@pen{titlepag}
\fi