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diff --git a/tex/thesis/style/prettyref.sty b/tex/thesis/style/prettyref.sty
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+%% prettyref v3.0
+%%
+%% Copyright 1995,1998.  by Kevin Ruland kevin@rodin.wustl.edu
+%%
+%% Modified 2003, by David Symonds:
+%%	- added non-breaking space (~) in reference formats
+%%	- used {varioref} to get nicer page references
+%%	- added \shortref to get almost the same, except for page references
+%%
+\ProvidesPackage{style/prettyref}[1998/07/09 v3.0]
+\usepackage{varioref}
+\def\newrefformat#1#2{%
+  \@namedef{pr@#1}##1{#2}}
+\def\prettypageref#1{\vpageref{#1}}
+\newrefformat{eq}{\textup{(\ref{#1})}}
+\newrefformat{lem}{Lemma~\ref{#1} \prettypageref{#1}}
+\newrefformat{thm}{Theorem~\ref{#1}}
+\newrefformat{cha}{Chapter~\ref{#1} \prettypageref{#1}}
+\newrefformat{sec}{Section~\ref{#1} \prettypageref{#1}}
+\newrefformat{app}{Appendix~\ref{#1} \prettypageref{#1}}
+\newrefformat{tab}{Table~\ref{#1} \prettypageref{#1}}
+\newrefformat{fig}{Figure~\ref{#1} \prettypageref{#1}}
+\newrefformat{alg}{Algorithm~\ref{#1} \prettypageref{#1}}
+\def\prettyref#1{\@prettyref#1:}
+\def\@prettyref#1:#2:{%
+  \expandafter\ifx\csname pr@#1\endcsname\relax%
+    \PackageWarning{prettyref}{Reference format #1\space undefined}%
+    \ref{#1:#2}%
+  \else%
+    \csname pr@#1\endcsname{#1:#2}%
+  \fi%
+}
+
+
+
+\def\newshortrefformat#1{%
+  \@namedef{prS@#1}##1}
+\newshortrefformat{lem}{Lemma~\ref{#1}}
+\newshortrefformat{cha}{Chapter~\ref{#1}}
+\newshortrefformat{sec}{Section~\ref{#1}}
+\newshortrefformat{app}{Appendix~\ref{#1}}
+\newshortrefformat{tab}{Table~\ref{#1}}
+\newshortrefformat{fig}{Figure~\ref{#1}}
+\newshortrefformat{alg}{Algorithm~\ref{#1}}
+\def\shortref#1{\@shortref#1:}
+\def\@shortref#1:#2:{%
+  \expandafter\ifx\csname prS@#1\endcsname\relax%
+    \PackageWarning{prettyref}{Reference format #1\space undefined}%
+    \ref{#1:#2}%
+  \else%
+    \csname prS@#1\endcsname{#1:#2}%
+  \fi%
+}
+
+
+\endinput
+%%
+%% End of file `prettyref.sty'.