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%D \module
%D [ file=strc-lev,
%D version=2010.09.23,
%D title=\CONTEXT\ Structure Macros,
%D subtitle=Automatic Levels,
%D author=Hans Hagen,
%D date=\currentdate,
%D copyright=PRAGMA-ADE / Hans Hagen]
%C
%C This module is part of the \CONTEXT\ macro||package and is
%C therefore copyrighted by \PRAGMA. See mreadme.pdf for
%C details.
\writestatus{loading}{ConTeXt Structure Macros / Automatic Levels}
%D This module is the result of a discussion between Alan Braslau and
%D me. I used to have a private (\MKII) module for this but the new
%D structure code in \MKIV\ is more suitable for this so now we have
%D it as core functionality. For the moment this an experiment that
%D Alan and I conduct so it might evolve.
\registerctxluafile{strc-lev}{1.001}
\unprotect
\unexpanded\def\definestructurelevels{\dodoubleargument\dodefinestructurelevels}
\unexpanded\def\startstructurelevel {\dosingleempty\dostartstructurelevel}
\unexpanded\def\dodefinestructurelevels[#1][#2]{\ctxlua{structures.sections.defineautolevels("#1","#2")}}
\unexpanded\def\dostartstructurelevel [#1]{\ctxlua{structures.sections.startautolevel("#1")}}
\unexpanded\def\stopstructurelevel {\ctxlua{structures.sections.stopautolevel()}}
\unexpanded\def\nostartstructurehead{\dotripleargument\nonostartstructurehead}
\unexpanded\def\nostopstructurehead {\dosingleargument\nonostopstructurehead }
\unexpanded\def\dostartstructurelevel[#1]%
{\doifassignmentelse{#1}
{\ctxlua{structures.sections.startautolevel("\v!default")}[#1]}
{\ctxlua{structures.sections.startautolevel("#1")}}}
\unexpanded\def\nonostartstructurehead[#1][#2][#3]%
{\blank
\noindentation{\tttf[start missing structure level #1]}
\blank}
\unexpanded\def\nonostopstructurehead[#1]%
{\blank
\noindentation{\tttf[stop missing structure level #1]}
\blank}
\definestructurelevels
[\v!default]
[\v!chapter,
\v!section,
\v!subsection,
\v!subsubsection,
\v!subsubsubsection,
\v!subsubsubsubsection]
\protect \endinput
% \starttext
% \definehead[xxxxxxsection][subsubsection]
% \setuphead [xxxxxxsection][color=red]
% \definestructurelevels[main][chapter,section,subsection,subsubsection]
% \definestructurelevels[next][chapter,section,subsection,xxxxxxsection]
% \startstructurelevel [main] [title=first top level]
% \startstructurelevel [main] [title=first lower level]
% \startstructurelevel [main] [title=second lower level]
% \startstructurelevel [main] [title=third lower level]
% test
% \stopstructurelevel
% \stopstructurelevel
% \stopstructurelevel
% \startstructurelevel [main] [title=first lower level]
% \startstructurelevel [main] [title=second lower level]
% \startstructurelevel [next] [title=third lower level]
% test
% \stopstructurelevel
% \stopstructurelevel
% \stopstructurelevel
% \stopstructurelevel
% \stoptext
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