From e0c6872cf40896c7be36b11dcc744620f10adf1d Mon Sep 17 00:00:00 2001
From: Norbert Preining <norbert@preining.info>
Date: Mon, 2 Sep 2019 13:46:59 +0900
Subject: Initial commit

---
 macros/latex/contrib/boites/boites.dtx | 676 +++++++++++++++++++++++++++++++++
 1 file changed, 676 insertions(+)
 create mode 100644 macros/latex/contrib/boites/boites.dtx

(limited to 'macros/latex/contrib/boites/boites.dtx')

diff --git a/macros/latex/contrib/boites/boites.dtx b/macros/latex/contrib/boites/boites.dtx
new file mode 100644
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--- /dev/null
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@@ -0,0 +1,676 @@
+%\CheckSum{242}
+%\iffalse ^^A meta-comment
+% boites.dtx
+%
+%% Copyright (c) José Romildo Malaquias <malaquias@gmail.com>, 2013
+%%               (maintainer)
+%% Copyright (c) Markus Kohm <komascript at gmx.info>, 2009
+%%               (boites.dtx only)
+%% Copyright (c) Susan Dittmar <Susan.Dittmar@gmx.de>, 2009
+%%               (english translation)
+%% Copyright (c) Vincent Zoonekynd <zoonek@math.jussieu.fr>, 1998-1999
+%%               (boites.sty)
+%%
+%% This work was derived from Susan Dittmar's translated version of
+%% Vincent Zoonekynd's boites.sty.
+%%
+%% This file is distributed unter the same license like the orignal
+%% boites.sty from March 1999: The GNU Public Licence.
+%%
+%
+%<*dtx|driver|package>
+%<*dtx>
+\ifx\ProvidesFile\undefined
+\def\batchfile{boites.dtx}
+\input docstrip.tex
+\keepsilent
+\askforoverwritefalse
+\preamble
+\endpreamble
+\generate{%
+  \file{boites-fr.drv}{\from{boites.dtx}{driver,french}}%
+  \file{boites-en.drv}{\from{boites.dtx}{driver,english}}%
+% \file{boites-p.sty}{\from{boites.dtx}{package}}% just use original boites.sty!
+}
+\ifToplevel{\csname fi\endcsname\csname fi\endcsname}
+\csname endinput\endcsname
+\fi
+\ProvidesFile{boites.dtx}[%
+%</dtx>
+%<driver&english>\ProvidesFile{boites-en.tex}[%
+%<driver&french>\ProvidesFile{boites-fr.tex}[%
+%<package>\ProvidesPackage{boites-p}[%
+2009/05/06 v1.0a from boites.sty derived
+%<*dtx>
+dtx file]
+%</dtx>
+%<*driver>
+%<english>english
+%<french>french
+%<driver>documentation]
+%</driver>
+%<package>package]
+%</dtx|driver|package>
+%<*dtx|driver>
+\documentclass{ltxdoc}
+\usepackage[utf8]{inputenc}
+%<*dtx>
+\usepackage[french,english]{babel}
+%</dtx>
+%<driver&english>\usepackage[english]{babel}
+%<driver&french>\usepackage[french]{babel}
+\expandafter\newif\csname ifenglish\endcsname
+\expandafter\newif\csname iffrench\endcsname
+\newcommand*{\selectenglish}{%
+  \selectlanguage{english}%
+  \englishtrue
+  \frenchfalse
+}
+\newcommand*{\selectfrench}{%
+  \selectlanguage{french}%
+  \englishfalse
+  \frenchtrue
+}
+\usepackage{hyperref}\renewcommand*{\theHsection}{\theHpart.\thesection}
+\begin{document}
+\RecordChanges
+%<*dtx|english>
+\selectenglish
+\DocInput{boites.dtx}
+%</dtx|english>
+%<*dtx|french>
+\selectfrench
+\DocInput{boites.dtx}
+%</dtx|french>
+\end{document}
+%</dtx|driver>
+%\fi ^^A meta-comment
+%
+% \GetFileInfo{boites.dtx}
+%
+%\iffrench
+%   \title{\textsf{boites}\thanks{\fileversion, \filedate}}
+%   \author{Vincent Zoonekynd\thanks{\texttt{zoonek@math.jussieu.fr}}}
+%   \date{\filedate}
+%\fi
+%\ifenglish
+%   \title{Package \textsf{boites}\thanks{\fileversion, \filedate}}
+%   \author{Vincent Zoonekynd\thanks{\texttt{zoonek@math.jussieu.fr}}%
+%           \and
+%           Susan Dittmar (translation of the documentation)%
+%           \thanks{\texttt{Susan.Dittmar@gmx.de}}}
+%\fi
+% \let\Title\title
+% \let\Author\author
+% \let\Maketitle\maketitle
+% \maketitle
+% \setcounter{section}{0}
+% \let\maketitle\Maketitle
+% \let\author\Author
+% \let\title\Title
+%
+% \iffrench \setcounter{part}{2}\part{Franzaise}\fi
+% \ifenglish \setcounter{part}{1}\part{English}\fi
+%
+%\iffrench\section{Modifiations par VZ, Juillet 1998}\fi
+%\ifenglish\section{Modifications by VZ, July 1998}\fi
+%
+% \begin{description}
+% \ifenglish\item[May 2009:] Original file \texttt{README} included\fi
+% \ifenglish\item[January 2009:] Translations of the french comments by
+%   Susan Dittmar.\fi
+% \iffrench\item[Mars 1999:] Il y a certaines lignes à ne pas numéroter (par
+%   exemple, celles qui ne contiennent que des espaces
+%   verticaux avant ou après une énumération).\fi
+% \ifenglish\item[March 1999:] Some lines are not taken in correctly (for
+%   example those that contain only vertical space before or after
+%   an enumeration).\fi
+% \iffrench\item[Mars 1999:] commentaires\fi
+% \ifenglish\item[March 1999:] comments\fi
+% \end{description}
+%
+%\iffrench
+% Il y a quelques bugs, en particulier des traits qui sont trop
+% longs, trop courts, trop épais ou trop fins. Si Quelqu'un sait à
+% quoi c'est dû, qu'il me le dise.
+%
+% Il ne devrait plus y avoir de problème à cause d'un environement de
+% type liste (itemize, enumerate, etc.) à l'intérieur des boites.
+%
+% D'après :
+%\fi
+%\ifenglish
+% There are some bugs, in particular some lengths that are too long,
+% too short, too low, or too fine. If someone knows what causes this,
+% please tell me.
+%
+% The problem with list environments (itemize, enumerate, etc.) inside
+% the boite environment should not longer exist.
+%
+% Based upon:
+%\fi
+% \textsf{eclbkbox.sty} by Hideki Isozaki, 1992;
+% Date: May  28, 1993.
+%
+% \ifenglish
+% \section{User Documentation}
+% \begin{flushleft}
+% \texttt{boites.sty} (boxes that may break across pages)\\
+% \copyright\ 1998--1999 Vincent Zoonekynd \textless
+% zoonek@math.jussieu.fr\textgreater\\
+% Distributed under the GNU Public Licence
+% \end{flushleft}
+%
+% \subsection{Description}
+% These environments allow page breaks inside framed boxes.
+% They include a few examples (shaded box, box with a wavy
+% line on its side, etc.)
+%
+% See also
+% \href{http://www.ctan.org/pkg/framed}
+%      {macros/latex/contrib/other/misc/framed.sty}.
+%
+% \subsection{Usage}
+%
+% \paragraph{In the preamble:}
+% \begin{verbatim}
+% \usepackage{boites,boites_examples,graphicx}
+% \end{verbatim}
+%
+% \paragraph{Before using the various environments:}
+% \begin{description}
+% \item[\cs{bkcounttrue}:]  the lines will be numbered
+% \item[\cs{bkcountfalse}:] the lines will not be numbered
+% \end{description}
+%
+% \paragraph{Boxed text with a title:}
+% \begin{verbatim}
+% \begin{boiteepaisseavecuntitre}
+% ...
+% \end{boiteepaisseavecuntitre}
+% \end{verbatim}
+%
+% \paragraph{Text with a double vertical line on the left and a number}
+% (17, in this example):
+% \begin{verbatim}
+% \begin{boitenumeroteeavecunedoublebarre}{17}
+% ...
+% \end{boitenumeroteeavecunedoublebarre}
+% \end{verbatim}
+%
+% \paragraph{Text with a wavy line on the left:}
+% \begin{verbatim}
+% \begin{boiteavecunelignequiondulesurlecote}
+% ...
+% \end{boiteavecunelignequiondulesurlecote}
+% \end{verbatim}
+%
+% \paragraph{Shaded box:}
+% \begin{verbatim}
+% \begin{boitecoloriee}
+% ...
+% \end{boitecoloriee}
+% \end{verbatim}
+%
+% If you wish other kinds of boxes, have a look at
+% \texttt{boites\_examples.sty} and feel free to adapt the macros. Examples
+% for several kinds of boxes are shown at
+% \href{boites_exemples.pdf}{\texttt{boites\_exemples.pdf}}.
+%
+% \subsection{Features}
+% \begin{itemize}
+% \item These environments may be nested.
+% \item They may appear in a multicols environment.
+% \item Floating material, footnotes, marginpars appearing inside
+%  them will be lost.
+% \end{itemize}
+% \fi
+%
+% \iffrench\section{Guide d'utilisateur}
+% Cette section n'existe malheureusement que dans la version anglaise.\fi
+%
+% \StopEventually{\PrintIndex\PrintChanges}
+%
+% \section{Implementation}
+%
+%\iffalse
+%<*package>
+%\fi
+%
+%    \begin{macrocode}
+\newbox\bk@bxb
+\newbox\bk@bxa
+\newif\if@bkcont 
+\newif\ifbkcount
+\newcount\bk@lcnt
+
+\def\breakboxskip{2pt}
+\def\breakboxparindent{1.8em}
+%    \end{macrocode}
+%
+% \iffrench\subsection{Paramètres modifiables}\fi
+% \ifenglish\subsection{parameters that can be modified}\fi
+%    \begin{macrocode}
+\def\bkvz@before@breakbox{\ifhmode\par\fi\vskip\breakboxskip\relax}
+%    \end{macrocode}
+%
+% \iffrench
+% Ce que l'on met à gauche du texte, par exemple, une ligne verticale
+% pour faire un cadre, ou une ligne qui ondule.
+% \fi
+% \ifenglish
+% What should be put on the left of the text, for example a vertical
+% line for a frame, or a wavy line.
+% \fi
+%    \begin{macrocode}
+\def\bkvz@left{\vrule \@width\fboxrule\hskip\fboxsep}
+%    \end{macrocode}
+%
+% \iffrench De même, ce que l'on met à droite,\fi
+% \ifenglish Analog; what should be put on the right,\fi
+%    \begin{macrocode}
+\def\bkvz@right{\hskip\fboxsep\vrule \@width\fboxrule}
+%    \end{macrocode}
+%
+% \iffrench en haut\fi
+% \ifenglish above\fi
+%    \begin{macrocode}
+\def\bkvz@top{\hrule\@height\fboxrule}
+%    \end{macrocode}
+%
+% \iffrench ou en bas\fi
+% \ifenglish and below.\fi
+%    \begin{macrocode}
+\def\bkvz@bottom{\hrule\@height\fboxrule}
+%    \end{macrocode}
+%
+% \iffrench
+% Si vous modifiez l'une de ces macros, il ne faut pas oublier de
+% modifier aussi la suivante, qui change la valeur de \cs{linewidth} en
+% lui retirant la largeur de tout ce que l'on vient de mettre sur le
+% côté. 
+% \fi
+% \ifenglish 
+% If you modify one of those macros, don't forget to modify also
+% the following. It reduces the value of \cs{linewidth} by the width
+% of all that will be put on the edges.
+% \fi
+%    \begin{macrocode}
+\def\bkvz@set@linewidth{\advance\linewidth -2\fboxrule
+  \advance\linewidth -2\fboxsep}
+%    \end{macrocode}
+%
+% \iffrench FIN DES PARAMÈTRES MODIFIABLES\fi
+% \ifenglish END OF PARAMETERS THAT CAN BE MODIFIED\fi
+%
+% \iffrench \subsection{Le début de l'environement}\fi
+% \ifenglish \subsection{The start of the environment}\fi
+%    \begin{macrocode}
+\def\breakbox{%
+%    \end{macrocode}
+% \iffrench
+% On n'est pas nécessairement en mode vertical.
+% C'est \cs{bkvz@before@breakbox} qui s'en occupe (ou non).
+% \fi
+% \ifenglish 
+% Start is not necessarily in vertical mode.
+% \cs{bkvz@before@breakbox} deals with this (if necessary).
+% \fi
+%    \begin{macrocode}
+  \bkvz@before@breakbox
+%    \end{macrocode}
+% \iffrench on met tout dans une \cs{vbox} (\cs{bk@bxb})\fi
+% \ifenglish put all in one \cs{vbox} (\cs{bk@bxb})\fi
+%    \begin{macrocode}
+  \setbox\bk@bxb\vbox\bgroup
+%    \end{macrocode}
+% \iffrench
+% À l'intérieur de cette \cs{vbox}, on change la valeur de \cs{hsize} (et
+% aussi \cs{linewidth}).
+% \fi
+% \ifenglish Inside this \cs{vbox}, change \cs{hsize} (and \cs{linewidth}).\fi
+%    \begin{macrocode}
+  \bkvz@set@linewidth
+  \hsize\linewidth
+%    \end{macrocode}
+% \iffrench je ne sais pas ce que fait la commande \cs{@parboxrestore}.\fi
+% \ifenglish I do not know what \cs{@parboxrestore} does.\fi
+%    \begin{macrocode}
+  \@parboxrestore
+%    \end{macrocode}
+% \iffrench On indente éventuellement, si l'utilisateur le désire.\fi
+% \ifenglish Indent if the user so desires.\fi
+%    \begin{macrocode}
+  \parindent\breakboxparindent\relax}
+%    \end{macrocode}
+%
+% \iffrench On coupe la boite\fi
+% \ifenglish Cut the box\fi
+%
+% \cs{@tempdimb}: amount of vertical skip 
+% between the first line (\cs{bk@bxa}) and the rest (\cs{bk@bxb})
+%    \begin{macrocode}
+\def\bk@split{%
+%    \end{macrocode}
+% \iffrench On calcule la hauteur totale (hauteur + profondeur) de la boite.\fi
+% \ifenglish Calculate the total height (height + depth) of the box.\fi
+%    \begin{macrocode}
+  \@tempdimb\ht\bk@bxb % height of original box
+  \advance\@tempdimb\dp\bk@bxb 
+%    \end{macrocode}
+% \iffrench
+% On coupe, à l'aide de la commande \cs{vsplit}\dots to 0pt
+% Le morceau du haut se retrouve dans \cs{bk@bxa}, 
+% celui du bas dans \cs{bk@bxb}.
+% \fi
+% \ifenglish 
+% Cut with the help of \cs{vsplit}\dots to 0pt
+% The height can then be found in \cs{bk@bxa},
+% the depth in \cs{bk@bxb}.
+% \fi
+%    \begin{macrocode}
+\setbox\bk@bxa\vsplit\bk@bxb to\z@ % split it
+%    \end{macrocode}
+% \iffrench
+% L'un des problèmes, c'est que la première boite a une hauteur vide. 
+% On peut lui redonner sa hauteur initiale grace à |\vbox{\unvbox...}|
+% \fi
+% \ifenglish 
+% A problem arises if the first box has an empty height.
+% It can be given back its initial height via |\vbox{\unvbox...}|
+% \fi
+%    \begin{macrocode}
+  \setbox\bk@bxa\vbox{\unvbox\bk@bxa}% recover height & depth of \bk@bxa
+%    \end{macrocode}
+% \iffrench
+% L'autre problème, c'est que l'on a perdu l'espace (interligne) entre
+% nos deux boites. Pour le récupérer, on ajoute la hauteur de ces deux
+% boites, et on fait la différence avec la hauteur initiale.
+% \fi
+% \ifenglish 
+% The other problem is to forget the (interline) space between our
+% our two boxes. To regain it, add the height of the two boxes
+% and subtract that from the initial height.
+% \fi
+%    \begin{macrocode}
+  \setbox\@tempboxa\vbox{\copy\bk@bxa\copy\bk@bxb}% naive concatenation
+  \advance\@tempdimb-\ht\@tempboxa 
+  \advance\@tempdimb-\dp\@tempboxa
+%    \end{macrocode}
+% \iffrench
+% Désormais, \cs{@tempdimb} contient l'espace entre les deux boites, que
+% l'on utilisera avec \cs{bk@addskipdp}.
+% \fi
+% \ifenglish 
+% Now, \cs{@tempdimb} contains the space between the two boxes,
+% which will be used with \cs{bk@addskipdp}.
+% \fi
+%    \begin{macrocode}
+}% gap between two boxes
+%    \end{macrocode}
+%
+% \iffrench Rajouter \cs{fboxsep} à la première ligne\fi
+% \ifenglish Add \cs{fboxsep} to the first line\fi
+%
+% \cs{@tempdima}: height of the first line (\cs{bk@bxa}) + \cs{fboxsep}
+%    \begin{macrocode}
+\def\bk@addfsepht{%
+     \setbox\bk@bxa\vbox{\vskip\fboxsep\box\bk@bxa}}
+%    \end{macrocode}
+%
+% \iffrench Cette macro n'est pas utilisée\fi
+% \ifenglish This macro is not used anywhere\fi
+%    \begin{macrocode}
+\def\bk@addskipht{%
+     \setbox\bk@bxa\vbox{\vskip\@tempdimb\box\bk@bxa}}
+%    \end{macrocode}
+%
+% \iffrench Rajouter \cs{fboxsep} à la dernière ligne\fi
+% \ifenglish Add \cs{fboxsep} to the last line\fi
+%
+% \cs{@tempdima}: depth of the first line (\cs{bk@bxa}) + \cs{fboxsep}
+%    \begin{macrocode}
+\def\bk@addfsepdp{%
+     \@tempdima\dp\bk@bxa
+     \advance\@tempdima\fboxsep
+     \dp\bk@bxa\@tempdima}
+%    \end{macrocode}
+%
+% \iffrench Rajouter l'espace qui a été perdu par \cs{vsplit}\dots\ to 0pt\fi
+% \ifenglish Add the space that had been lost by \cs{vsplit}\dots\ to 0pt\fi
+%
+% \cs{@tempdima}: depth of the first line (\cs{bk@bxa}) + vertical skip
+%    \begin{macrocode}
+\def\bk@addskipdp{%
+     \@tempdima\dp\bk@bxa
+     \advance\@tempdima\@tempdimb
+     \dp\bk@bxa\@tempdima}
+%    \end{macrocode}
+%
+% \iffrench
+% On ne compte pas toutes les lignes, mais uniquement celles qui en
+% sont vraiment. J'ai pris comme critère une largeur supérieure à
+% 1mm.  La même distance se retrouve un peu plus loin, dans
+% \cs{bk@line}. 
+% \fi
+% \ifenglish
+% Not all lines are computed, only cells that truely are there.
+% I have taken as criterion a size of minimum 1mm.
+% The same distance can be found further on, in \cs{bk@line}.
+% \fi
+%    \begin{macrocode}
+\def\bkvz@countlines{%
+  \ifdim\wd\bk@bxa>1mm\advance\bk@lcnt\@ne\fi
+}
+%    \end{macrocode}
+%
+% \iffrench Afficher la ligne que l'on vient de couper\fi
+% \ifenglish show the line we had cut\fi
+%    \begin{macrocode}
+\def\bk@line{%
+    \hbox to \linewidth{%
+      \ifdim\wd\bk@bxa>1mm
+        \ifbkcount\smash{\llap{\the\bk@lcnt\ }}\fi
+      \fi
+      \bkvz@left
+      \box\bk@bxa
+%    \end{macrocode}
+% \iffrench
+% Il arrive que la boite ne soit pas aussi large que la ligne
+% (par exemple, espace avant une énumération)
+% \fi
+% \ifenglish 
+% Sometimes the box is not big enough for a line (for example,
+% space before an enumeration)
+% \fi
+%    \begin{macrocode}
+      \hfil
+      \bkvz@right}}
+%    \end{macrocode}
+%
+% \iffrench La fin de l'environement\fi
+% \ifenglish The end of the environment\fi
+%    \begin{macrocode}
+\def\endbreakbox{%
+%    \end{macrocode}
+% \iffrench On ferme la \cs{vbox} (\cs{bk@bxb})\fi
+% \ifenglish Close the \cs{vbox} (\cs{bk@bxb})\fi
+%    \begin{macrocode}
+  \egroup
+% \ifhmode\par\fi
+  {\noindent
+%    \end{macrocode}
+% \iffrench On remet le compteur de lignes à un.\fi
+% \ifenglish Set line count back to one.\fi
+%    \begin{macrocode}
+    \bk@lcnt 0
+%    \end{macrocode}
+% \iffrench Le booléen que nous allons utiliser dans la boucle plus loin.\fi
+% \ifenglish The boolean we will use in the following loop.\fi
+%    \begin{macrocode}
+    \@bkconttrue
+%    \end{macrocode}
+% \iffrench
+% Comme on va empiler des boites, on met certains ressorts à zéro,
+% pour éviter les espaces verticaux non désirés.
+% \fi
+% \ifenglish 
+% While putting together the boxes, some ajustable lengths are set
+% to zero to avoid undesired vertical space.
+% \fi
+%    \begin{macrocode}
+    \baselineskip\z@
+    \lineskiplimit\z@
+    \lineskip\z@
+    \vfuzz\maxdimen
+%    \end{macrocode}
+% \iffrench On coupe la boite\fi
+% \ifenglish split the boxes\fi
+%    \begin{macrocode}
+    \bk@split
+%    \end{macrocode}
+% \iffrench On ajoute un peu d'espace vertical (\cs{fboxsep}) au dessus\fi
+% \ifenglish Add a bit of vertical space (\cs{fboxsep}) above\fi
+%    \begin{macrocode}
+    \bk@addfsepht
+%    \end{macrocode}
+% \iffrench
+% On ajoute en dessous l'espace qui avait été perdu par la commande
+% \cs{vsplit}. 
+% \fi
+% \ifenglish 
+% Add below the space that had been forgotten due to the use of
+% the \cs{vsplit} command.
+% \fi
+%    \begin{macrocode}
+    \bk@addskipdp
+%    \end{macrocode}
+% \iffrench De deux choses l'une,\fi
+% \ifenglish First of two,\fi
+%    \begin{macrocode}
+    \ifvoid\bk@bxb
+%    \end{macrocode}
+% \iffrench Soit, il n'y a qu'une ligne\fi
+% \ifenglish In case there's only one line\fi
+%    \begin{macrocode}
+      \def\bk@fstln{%
+%    \end{macrocode}
+% \iffrench On rajoute un peu d'espace (\cs{fboxsep}) en dessous.\fi
+% \ifenglish Add a bit of space (\cs{fboxsep}) below.\fi
+%    \begin{macrocode}
+        \bk@addfsepdp
+%    \end{macrocode}
+% \iffrench
+% On construit la boite : le haut, le milieu (qui contient la gauche
+% et la droite) et le bas.
+% \fi
+% \ifenglish 
+% Construct the box: the top, the middle (which contains 
+% the left and right parts) and the foot.
+% \fi
+%    \begin{macrocode}
+        \bkvz@countlines
+        \vbox{\bkvz@top\bk@line\bkvz@bottom}}%
+%    \end{macrocode}
+% \iffrench Soit, il y en a plusieurs.\fi
+% \ifenglish In case there's more to do.\fi
+%    \begin{macrocode}
+    \else
+      \def\bk@fstln{%
+%    \end{macrocode}
+% \iffrench On met le haut\fi
+% \ifenglish Put in the top\fi
+%    \begin{macrocode}
+        \bkvz@countlines
+        \vbox{\bkvz@top\bk@line}%
+%    \end{macrocode}
+% \iffrench ??? (Si on l'enlève, ça ne marche plus.)\fi
+% \ifenglish ??? (If this is removed, it does not work any more.)\fi
+%    \begin{macrocode}
+      \hfil 
+%    \end{macrocode}
+% \iffrench On commence à compter les lignes\fi
+% \ifenglish Continue counting lines\fi
+%    \begin{macrocode}
+%     \advance\bk@lcnt\@ne %%%%%%%%%%%%%%%%%%%% Voir \bkvz@countlines
+%    \end{macrocode}
+% \iffrench Début de la boucle\fi
+% \ifenglish Begin of the loop\fi
+%    \begin{macrocode}
+      \loop 
+%    \end{macrocode}
+% \iffrench On coupe ce qui reste de la boite.\fi
+% \ifenglish Cut out the next bit of the box.\fi
+%    \begin{macrocode}
+      \bk@split
+%    \end{macrocode}
+% \iffrench On rajoute l'espace vertical qui a été perdu.\fi
+% \ifenglish Add the vertical space that has been left out.\fi
+%    \begin{macrocode}
+      \bk@addskipdp
+%    \end{macrocode}
+% \iffrench Éventuellement, on augmente le numéro de la ligne\fi
+% \ifenglish advance number of lines if necessary\fi
+%    \begin{macrocode}
+      \bkvz@countlines
+%    \end{macrocode}
+% ???
+%    \begin{macrocode}
+      leavevmode
+%    \end{macrocode}
+% \iffrench S'il s'agit de la dernière ligne\fi
+% \ifenglish If it's the last line\fi
+%    \begin{macrocode}
+      \ifvoid\bk@bxb
+%    \end{macrocode}
+% \iffrench On met le booléen indiquant que la boucle doit se poursuivre à
+% FAUX.\fi
+% \ifenglish Set the boolean that indicates continuing the loop to FALSE.\fi
+%    \begin{macrocode}
+        \@bkcontfalse
+%    \end{macrocode}
+% \iffrench On met un peu d'espace vertical (\cs{fboxsep})\fi
+% \ifenglish Add a bit of vertical space (\cs{fboxsep})\fi
+%    \begin{macrocode}
+        \bk@addfsepdp
+%    \end{macrocode}
+% \iffrench En envoie la dernière ligne.\fi
+% \ifenglish Add the last line.\fi
+% \iffrench POURQUOI \cs{vtop} ??? Pour que l'éventuel numéro de ligne soit à
+% la bonne hauteur.\fi
+% \ifenglish WHY \cs{vtop}??? Because the line number has correct height.\fi
+%    \begin{macrocode}
+        \vtop{\bk@line\bkvz@bottom}%
+      \else               % 2,...,(n-1)
+        \bk@line
+      \fi
+      \hfil
+%    \end{macrocode}
+% \iffrench Voir \cs{bkvz@countlines}\fi
+% \ifenglish See \cs{bkvz@countlines}\fi
+%    \begin{macrocode}
+%     \advance\bk@lcnt\@ne
+     \if@bkcont\repeat}%
+  \fi
+  \leavevmode\bk@fstln\par}\vskip\breakboxskip\relax}
+%    \end{macrocode}
+%    \begin{macrocode}
+\bkcountfalse
+%    \end{macrocode}
+%
+%\iffalse
+%</package>
+%\fi
+%
+% \Finale
+%
+\endinput
+%
+% end of `boites.dtx'
+%
+% \iffalse
+%%% Local Variables:
+%%% mode: doc-tex
+%%% TeX-master: t
+%%% End:
+% \fi
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