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%%% ====================================================================
%%% @LaTeX-style-file{
%%% author = "Nico Verwer",
%%% version = "1.2",
%%% date = "24 February 1992",
%%% filename = "xrefwarn.sty",
%%% address = "Dept. of Computer Science
%%% Rijksuniversiteit te Utrecht
%%% P.O. box 80.089
%%% 3508 TB Utrecht
%%% the Netherlands",
%%% telephone = "+31 30 533921",
%%% FAX = "+31 30 513791",
%%% email = "nico@cs.ruu.nl (Internet)",
%%% codetable = "ISO/ASCII",
%%% keywords = "LaTeX, x-ref warnings",
%%% supported = "yes",
%%% docstring = "Normally, LaTeX issues a warning every
%%% time it encounters an undefined cross-
%%% reference or citation. Thus you will get
%%% many identical warnings. The effect of
%%% this style file is that only one warning
%%% is issued for every cross-reference or
%%% citation.",
%%% }
%%% ====================================================================
\ifx\xrefwarnLoaded\undefined\else\endinput\fi
\let\xrefwarnLoaded\empty
\def\@citex[#1]#2{\if@filesw\immediate\write\@auxout{\string\citation{#2}}\fi
\def\@citea{}\@cite{\@for\@citeb:=#2\do
{\@citea\def\@citea{,\penalty\@m\ }\@ifundefined
{b@\@citeb}{{\bf #2}\@warning
{Citation `\@citeb' on page \thepage \space undefined}
\global\@namedef{b@\@citeb}{{\bf ?}}}%
\hbox{\csname b@\@citeb\endcsname}}}{#1}}
\def\ref#1{\@ifundefined{r@#1}{{\bf {#1}?}
\@ifundefined{rr@#1}{\global\@namedef{rr@#1}{}\@warning
{Reference `#1' on page \thepage \space
undefined}}{}}{\edef\@tempa{\@nameuse{r@#1}}\expandafter
\@car\@tempa \@nil\null}}
\def\pageref#1{\@ifundefined{r@#1}{{\bf {#1}?}
\@ifundefined{rr@#1}{\global\@namedef{rr@#1}{}\@warning
{Reference `#1' on page \thepage \space
undefined}}{}}{\edef\@tempa{\@nameuse{r@#1}}\expandafter
\@cdr\@tempa\@nil\null}}
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