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+% 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 27.1.8.4, p. III-415.
+% Original source in file "macros7.TEX", starting line 945.
+\wlog{L: "widestc.tip" ["macros7.TEX," l. 945, p. III-415]}%
+% This file DOES belong to format "texip."
+\InputD{maxmindi.tip}
+\InputD{doloop.tip}
+\catcode`\@ = 11
+\newcount\@WidestLoopCounter
+\newbox\@WidestLoopBox
+\def\FindWidestChar #1#2#3#4{%
+ #1 = 0pt
+ \DoLoop{\@WidestLoopCounter}{#3}{1}{#4}{%
+ \setbox\@WidestLoopBox = \hbox{%
+ #2%
+ \char\@WidestLoopCounter
+ }%
+ \MaxDimen{#1}{#1}{\wd\@WidestLoopBox}{}%
+ }%
+}
+\catcode`\@ = 12