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+% \iffalse
+% --------------------------------------------------------------------
+% <*utils>
+% \fi
+%
+% \subsubsection{Random IDs}
+%
+% This macro sets the macro \cs{wg@uuid} to some random hex number.
+%
+% \begin{macrocode}
+\def\wg@r@ndom@id{%
+ \def\wg@uuid{}
+ \foreach \i in {1,...,8}{%
+ \pgfmathparse{Hex(random(0,15))}
+ \xdef\wg@uuid{\wg@uuid\pgfmathresult}}}
+% \end{macrocode}
+%
+%
+% \iffalse
+% --------------------------------------------------------------------
+% </utils>
+% \fi