\documentclass{ppex}
\nonstopmode
\AtBeginDocument {\setlength \unitlength {0.09pt}}
\usepackage {carom}
\pagestyle{empty}

\begin{document}
\ResetPreambleCommands
\ReadyForTheFray
\usepackage {carom}
\bzdrh{1==Br;4==Br}    \bzdrv{1==Br;4==Br}
\bzdrv[l]{1==Br;4==Br} \bzdrv[c]{1==Br;4==Br}
\end{document}
