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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 11.3.1, p. II-72.
% Original source in file "par2.TEX", starting line 1216.
\wlog{L: "enumlist.tip" ["par2.TEX," l. 1216, p. II-72]}%
% This file DOES belong to format "texip."
\InputD{parv-1.tip}
\InputD{counters.tip}
\catcode`\@ = 11
\newcount\@EnumerateListDepth
\@EnumerateListDepth = 0
\NewCounter{Enumerate1}{\arabic}%
{\TheCounter{Enumerate1}.}{\TheCounter{Enumerate1}}
\NewCounter{Enumerate2}{\alph}%
{(\TheCounter{Enumerate2})}%
{\TheCounter{Enumerate1}.\TheCounter{Enumerate2}}
\NewCounter{Enumerate3}{\roman}%
{\TheCounter{Enumerate3}.}%
{\RefCounter{Enumerate2}.\TheCounter{Enumerate3}}
\NewCounter{Enumerate4}{\Alph}%
{\TheCounter{Enumerate4}.}%
{\RefCounter{Enumerate3}.\TheCounter{Enumerate4}}
\def\BeginEnumerate{%
\begingroup
\global\advance\@EnumerateListDepth by 1
\ifcase\@EnumerateListDepth
\errmessage{\string\BeginEnumerate: no level
zero.}%
\or
\SetCounter{Enumerate1}{0}%
\@BeginEnumerateLevelOne
\def\Label ##1{\@Label{##1}{\RefCounter{Enumerate1}}{1}}%
\def\Item{%
\StepCounter{Enumerate1}%
\ItemLR{\PrintCounter{Enumerate1}}%
}%
\or
\SetCounter{Enumerate2}{0}%
\@BeginEnumerateLevelTwo
\def\Label ##1{\@Label{##1}{\RefCounter{Enumerate2}}{1}}%
\def\Item{%
\StepCounter{Enumerate2}%
\ItemLR{\PrintCounter{Enumerate2}}%
}%
\or
\SetCounter{Enumerate3}{0}%
\@BeginEnumerateLevelThree
\def\Label ##1{\@Label{##1}{\RefCounter{Enumerate3}}{1}}%
\def\Item{%
\StepCounter{Enumerate3}%
\ItemLR{\PrintCounter{Enumerate3}}%
}%
\or
\SetCounter{Enumerate4}{0}%
\@BeginEnumerateLevelFour
\def\Label ##1{\@Label{##1}{\RefCounter{Enumerate4}}{1}}%
\def\Item{%
\StepCounter{Enumerate4}%
\ItemLR{\PrintCounter{Enumerate4}}%
}%
\else
\errmessage{\string\BeginEnumerate: maximum
nesting level of 4 exceeded.}%
\fi
}
\def\EndEnumerate{%
\EndAList
\endgroup
\global\advance\@EnumerateListDepth by -1
}
\catcode`\@ = 12
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