% \iffalse meta-comment
% $Header$
%
% $Log$
%
% \fi
% \CheckSum{37}
% \def\fileversion{1.0}
% \def\filedate{26 May 97}
% \def\docdate{26 May 97}
%
% \changes{v1.0}{26 May 97}{First release}
%
% \MakeShortVerb{\|}
%
% \title{Putting ``dangerous bend'' symbols in the margin of difficult
% tutorial questions.}
% \author{Nick Urbanik}
% \maketitle
% \begin{abstract}
% Use this to indicate which tutorial questions are more difficult (or
% less relevant to the core syllabus!)
% \end{abstract}
%\StopEventually{}
% \section{Producing the documentation}
% Here is a short driver program that can be extracted with the \LaTeX2e
% |docstrip| program.
%    \begin{macrocode}
%<*driver>
\documentclass{article}%
\usepackage{a4,doc}
\EnableCrossrefs   % Make a full index.
\CodelineIndex     % Index by line numbers rather than by page.
\RecordChanges     % Show change history.
\begin{document}
\DocInput{dbend.dtx}
\PrintIndex
\PrintChanges
%    \end{macrocode}
% Now tell the people what they need to do next to get the index and
% change list:
%    \begin{macrocode}
\message{Next, to make the index and changes list for this documentation:}
\message{2. makeindx -s gind.ist dbend}
\message{3. makeindx -s gglo.ist -o dbend.gls dbend.glo}
\message{Finally, run this file through LaTeX once more.}
%    \end{macrocode}
%
%    \begin{macrocode}
\end{document}
%</driver>
%    \end{macrocode}
%    \begin{macrocode}
%<*package>
\ProvidesPackage{dbend}[97/05/26 ver 1.0 Creates dangerous bend in
the margin]
%    \end{macrocode}
%
% It's all in Don Knuth's \texttt{manfnt} font.
%    \begin{macrocode}
\font\manual=manfnt
%    \end{macrocode}
% The |dbend| macro puts the double bend symbol right there, but it
% has greater depth than the \texttt{manfnt.tfm} file indicates, so it
% overwrites what comes below it, but it does not change the line spacing.
%    \begin{macrocode}
\def\dbend{{\manual\char127}}
%    \end{macrocode}
%
% \DescribeMacro{bend}
% The |bend| macro puts the double bend symbol right there, hopefully
% not overwriting any other text.  However, it can increase the line
% spacing for that line.
%    \begin{macrocode}
\newcommand*{\bend}{\parbox[t][4.3ex][t]{1.5em}{\dbend\vfill}}
%\newcommand*{\tricky}{\llap{\dbend\hspace*{15mm}}}
%    \end{macrocode}
% \DescribeMacro{tricky}
% The |tricky| macro takes no arguments.  It simply places the double
% bend symbol from Don Knuth's \TeX{}book and places it in the margin.
%    \begin{macrocode}
\newcommand*{\tricky}{\makebox[0pt][r]{\dbend\hspace*{15mm}}}
%</package>
%    \end{macrocode}
%
% This |\endinput| command prevents anything else from being read by
% |docstrip|, such as the character table.
%    \begin{macrocode}
\endinput
%    \end{macrocode}
% \Finale