% This macro source file is from the four volume series
% "TeX in Practice" by Stephan von Bechtolsheim, published
% 1993 by Springer-Verlag, New York.
% Copyright 1993 Stephan von Bechtolsheim.
% No warranty or liability is assumed.
% This macro may be copied freely if no fees other than
% media cost or shipping charges are charged and as long
% as this copyright and the following source code itself
% is not changed. Please see the series for further information.
%
% Version: 1.0
% Date: May 1, 1993
%
%
% This source code is documented in 19.3.8, p. III-95.
% Original source in file "tokens2.TEX", starting line 1371.
\wlog{L: "cref-3a.tip" ["tokens2.TEX," l. 1371, p. III-95]}%
% This file DOES NOT belong to format "texip."
\InputD{pickfs.tip}
\InputD{namedef.tip}
\InputD{defauarg.tip}
\catcode`\@ = 11
\def\Ref #1{\@ref{0}{#1}}
\def\PageRef #1{\@ref{1}{#1}}
\def\@MostRecentLabel{}
\def\@ref #1#2{%
   \DefaultArg
       {\@ThisLabel}%
       {#2}%
       {\@MostRecentLabel}%
   \xdef\@MostRecentLabel{\@ThisLabel}%
   \if\NameDefinedConditional{@REF-\@ThisLabel}%
       \edef\@CrefTemp{\NameUse{@REF-\@ThisLabel}}%
       \ifcase #1\relax
           \expandafter\PickFirstOfTwo\@CrefTemp
       \or
           \expandafter\PickSecondOfTwo\@CrefTemp
       \fi
   \else
       {\bf ??}%
       \wlog{Label \@ThisLabel\space undefined.}%
   \fi
}
\catcode`\@ = 12

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