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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 26.5, p. III-365.
% Original source in file "macros6.TEX", starting line 362.
\wlog{L: "legyear.tip" ["macros6.TEX," l. 362, p. III-365]}%
% This file DOES belong to format "texip."
\InputD{earliest.tip}
\def\CheckLegalYear #1{%
\ifnum #1 < \EarliestYearDate
\errmessage{\string\CheckLegalYear: year #1
< \the\EarliestYearDate\space
encountered, illegal.}%
\fi
}
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