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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% outlines.sty - Provides an "outline" environment for mixed-level
% outline lists
%
% Charles Pecheur, UCL, 2005 -- 2012
% charles.pecheur@uclouvain.be
%
% Note: this package has no connection with outline.sty or outliner.sty,
% that are available on CTAN
%
% This work may be distributed and/or modified under the
% conditions of the LaTeX Project Public License, either version 1.3
% of this license or (at your option) any later version.
% The latest version of this license is in
% http://www.latex-project.org/lppl.txt
% and version 1.3 or later is part of all distributions of LaTeX
% version 2005/12/01 or later.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% Usage:
%
% \usepackage{outlines}
%
% \begin{outline}[<list-style>]
% \1 <level 1 text>
% \1[<label>] <level 1 text>
% \2 <level 2 text>
% \3 <level 3 text>
% \4 <level 4 text>
% \0 <normal paragraph>
% ...
% \end{outline}
%
% where:
% + <list-style> is an optional list environment name
% (e.g. itemize, enumerate, ...). The default is itemize.
% The same style is used for all levels that have not been overridden.
% + <label> is an optional label, as in \item[<label>].
% + Levels may be mixed freely, except that a \1 must come before
% the first \2, a \2 before the first \3, etc.
% (this restriction is inherited from list environments).
% + \0 gives a normal, non-list paragraph.
% + List styles for each level can be overridden by re-defining
% \outlinei, ..., \outlineiiii, either globally or inside an outline block.
%
% Do not nest outlines inside outlines or other lists. Lists inside outlines
% should work fine.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\ProvidesPackage{outlines}[2012/1/23 1.1 Ch. Pecheur]
\RequirePackage{ifthen}
\makeatletter
% \ol@type stores the default list style
\newcommand{\ol@type}{itemize}
% \ol@typei ... store the (list) environment names used in outlines
\newcommand{\outlinei}{\ol@type}
\newcommand{\outlineii}{\ol@type}
\newcommand{\outlineiii}{\ol@type}
\newcommand{\outlineiiii}{\ol@type}
% \ol@inci ..., \ol@deci ... increase/decrease the indentation level
\newcommand{\ol@inci}{\begin{\outlinei}}
\newcommand{\ol@deci}{\end{\outlinei}}
\newcommand{\ol@incii}{\begin{\outlineii}}
\newcommand{\ol@decii}{\end{\outlineii}}
\newcommand{\ol@inciii}{\begin{\outlineiii}}
\newcommand{\ol@deciii}{\end{\outlineiii}}
\newcommand{\ol@inciiii}{\begin{\outlineiiii}}
\newcommand{\ol@deciiii}{\end{\outlineiiii}}
% \ol@toz, \ol@toi ... "transition" to indentation level 0..4 by opening or
% closing nested list levels as needed.
% They are dynamically modified according to the current level.
\newcommand{\ol@toz}{}
\newcommand{\ol@toi}{}
\newcommand{\ol@toii}{}
\newcommand{\ol@toiii}{}
\newcommand{\ol@toiiii}{}
% \ol@commands{C0}{C1}{C2}{C3}{C4} set the level transition commands
% above to C0..C4
\newcommand{\ol@commands}[5]{%
\renewcommand{\ol@toz}{#1}%
\renewcommand{\ol@toi}{#2}%
\renewcommand{\ol@toii}{#3}%
\renewcommand{\ol@toiii}{#4}%
\renewcommand{\ol@toiiii}{#5}%
}
% \ol@exit resets transition commands. This is not mandatory, just cleaner.
\newcommand{\ol@exit}{%
\ol@commands{}{}{}{}{}}
% \ol@z, \ol@i ... update all transitions for level 0..4
\newcommand{\ol@z}{%
\ol@commands%
{}%
{\ol@inci}%
{\ol@inci\ol@incii}%
{\ol@inci\ol@incii\ol@inciii}%
{\ol@inci\ol@incii\ol@inciii\ol@inciiii}}
\newcommand{\ol@i}{%
\ol@commands%
{\ol@deci}%
{}%
{\ol@incii}%
{\ol@incii\ol@inciii}%
{\ol@incii\ol@inciii\ol@inciiii}}
\newcommand{\ol@ii}{%
\ol@commands%
{\ol@decii\ol@deci}%
{\ol@decii}%
{}%
{\ol@inciii}%
{\ol@inciii\ol@inciiii}}
\newcommand{\ol@iii}{%
\ol@commands%
{\ol@deciii\ol@decii\ol@deci}%
{\ol@deciii\ol@decii}%
{\ol@deciii}%
{}%
{\ol@inciiii}}
\newcommand{\ol@iiii}{%
\ol@commands%
{\ol@deciiii\ol@deciii\ol@decii\ol@deci}%
{\ol@deciiii\ol@deciii\ol@decii}%
{\ol@deciiii\ol@deciii}%
{\ol@deciiii}%
{}}
% the outline environment provides commands \1..\4 for
% introducing items at level 1..4, and \0 for normal paragraphs
% within the outline section.
\newenvironment{outline}[1][]{%
\ifthenelse{\equal{#1}{}}{}{\renewcommand{\ol@type}{#1}}%
\ol@z%
\newcommand{\0}{\ol@toz\ol@z}%
\newcommand{\1}{\ol@toi\ol@i\item}%
\newcommand{\2}{\ol@toii\ol@ii\item}%
\newcommand{\3}{\ol@toiii\ol@iii\item}%
\newcommand{\4}{\ol@toiiii\ol@iiii\item}%
}{%
\ol@toz\ol@exit%
}
\makeatother
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