% |\arrayrulewidth|. However, there's an optional argument which can contain
% one of:
%
-% \begin{description}
-% \renewcommand\makelabel[1]{\kern\labelsep\ttfamily#1}
+% \begin{description} \setdescriptionlabel{\ttfamily#1}
% \item[thin] Use |\arrayrulewidth| as the line width. This is the default.
% \item[thick] Use |\arraythickrulewidth| as the line width. This is the
% same as giving a |*| after the command.