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+% \CheckSum{1237}
+%
+%\iffalse   % this is a METACOMMENT !
+%
+%% File: slidenotes.dtx Copyright (C) 1993-1996 Hans van der Meer
+%%
+%
+%    \begin{macrocode}
+%<*driver>
+\documentclass{ltxdoc}
+\ProvidesFile{slidenotes.dtx}[1998/04/23 3.27  Slides and notes]
+\GetFileInfo{slidenotes.dtx}
+\title{The \textsf{slidenotes} package%
+\thanks{This file has version \fileversion\space dated \filedate.}}
+\author{Hans van der Meer\\hansm@wins.uva.nl}
+\date{Printed \today}
+\DisableCrossrefs
+\CodelineNumbered
+%\RecordChanges
+\begin{document}
+\maketitle
+\DocInput{slidenotes.dtx}
+\end{document}
+%</driver>
+%    \end{macrocode}
+%
+%\fi
+%
+% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+% \changes{3.00}{1994/03/21}{First version for LaTeX2E and docstrip}
+% \changes{3.01}{1994/12/10}{Removed @vpt... macros}
+% \changes{3.02}{1995/01/26}{sheets->slides, various changes}
+% \changes{3.03}{1995/02/02}{small changes}
+% \changes{3.04}{1995/08/11}{@currdir in folder defaults}
+% \changes{3.05}{1995/08/28}{restructured documentation}
+% \changes{3.06}{1995/08/29}{frame variations, LaTeX2e-isms}
+% \changes{3.07}{1995/09/01}{frame variations, oval boxing problematic}
+% \changes{3.08}{1995/09/04}{note (section) title -> toc error}
+% \changes{3.09}{1995/09/05}{added vertical slide centering option}
+% \changes{3.10}{1995/09/18}{cue macro changed}
+% \changes{3.11}{1995/10/12}{everyslide, nofiles for slides added}
+% \changes{3.12}{1995/10/23}{cue macro marginpar always same side}
+% \changes{3.13}{1996/03/16}{changes to frame treatment}
+% \changes{3.14}{1996/03/22}{check for slides that are too high}
+% \changes{3.15}{1996/05/25}{nofiles removed}
+% \changes{3.16}{1996/08/13}{test presence chapter, cleaning code}
+% \changes{3.17}{1996/08/14}{on directory names changed pathseparator,
+%                            disable tableofcontents if not notes}
+% \changes{3.18}{1996/08/14}{added mixing of portrait and landscape}
+% \changes{3.19}{1996/08/21}{added portrait/landscape selective code}
+% \changes{3.20}{1996/08/23}{made all newcommands starred where appropiate,
+%                            removed superfluous braces}
+% \changes{3.21}{1997/03/08}{added better directory separator,
+%                            changed slide dimensions to magnified sizes,
+%                            corrected calculation of text dimensions,
+%                            problem with missedslidecounter solved}
+% \changes{3.22}{1997/03/14}{CurrentDirectory for @currdir added}
+% \changes{3.23}{1998/02/17}{option to suppress newpage at slide}
+% \changes{3.24}{1998/03/20}{ignorespaces in slide en note begin-commands}
+% \changes{3.25}{1998/04/08}{stepcounter{slidecounter}->refstepcounter}
+% \changes{3.26}{1998/04/15}{list in note environment zet parsep}
+% \changes{3.27}{1998/04/23}{boldmath in titles on sheets}
+% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%
+% \DoNotIndex{\#}
+% \DoNotIndex{\@,}
+% \DoNotIndex{\\}
+% \DoNotIndex{\@dblarg}
+% \DoNotIndex{\@empty}
+% \DoNotIndex{\@firstoftwo}
+% \DoNotIndex{\@height}
+% \DoNotIndex{\@ifstar}
+% \DoNotIndex{\@ifundefined}
+% \DoNotIndex{\@m}
+% \DoNotIndex{\@makeother}
+% \DoNotIndex{\@namedef}
+% \DoNotIndex{\@sanitize}
+% \DoNotIndex{\@secondoftwo}
+% \DoNotIndex{\@tempdima}
+% \DoNotIndex{\@tempdimb}
+% \DoNotIndex{\@title}
+% \DoNotIndex{\@width}
+% \DoNotIndex{\addtolength}
+% \DoNotIndex{\addvspace}
+% \DoNotIndex{\advance}
+% \DoNotIndex{\begin}
+% \DoNotIndex{\begingroup}
+% \DoNotIndex{\bgroup}
+% \DoNotIndex{\bigskip}
+% \DoNotIndex{\bigskipamount}
+% \DoNotIndex{\box}
+% \DoNotIndex{\catcode}
+% \DoNotIndex{\csname}
+% \DoNotIndex{\def}
+% \DoNotIndex{\dimen@}
+% \DoNotIndex{\divide}
+% \DoNotIndex{\dp}
+% \DoNotIndex{\edef}
+% \DoNotIndex{\egroup}
+% \DoNotIndex{\end}
+% \DoNotIndex{\endcsname}
+% \DoNotIndex{\endgroup}
+% \DoNotIndex{\endlist}
+% \DoNotIndex{\enspace}
+% \DoNotIndex{\expandafter}
+% \DoNotIndex{\fbox}
+% \DoNotIndex{\gdef}
+% \DoNotIndex{\global}
+% \DoNotIndex{\hbox}
+% \DoNotIndex{\hfil}
+% \DoNotIndex{\hfill}
+% \DoNotIndex{\hrule}
+% \DoNotIndex{\hspace}
+% \DoNotIndex{\Huge}
+% \DoNotIndex{\huge}
+% \DoNotIndex{\ht}
+% \DoNotIndex{\if,\else,\fi}
+% \DoNotIndex{\ifcase,\or,\fi}
+% \DoNotIndex{\ifdim,\fi}
+% \DoNotIndex{\ifnum,\fi}
+% \DoNotIndex{\ifodd,\fi}
+% \DoNotIndex{\ifx,\fi}
+% \DoNotIndex{\item}
+% \DoNotIndex{\kern}
+% \DoNotIndex{\LARGE}
+% \DoNotIndex{\Large}
+% \DoNotIndex{\large}
+% \DoNotIndex{\let}
+% \DoNotIndex{\list}
+% \DoNotIndex{\m@ne}
+% \DoNotIndex{\medskip}
+% \DoNotIndex{\medskipamount}
+% \DoNotIndex{\multiply}
+% \DoNotIndex{\newcommand}
+% \DoNotIndex{\newcounter}
+% \DoNotIndex{\newenvironment}
+% \DoNotIndex{\newif}
+% \DoNotIndex{\newlength}
+% \DoNotIndex{\newpage}
+% \DoNotIndex{\newsavebox}
+% \DoNotIndex{\newtoks}
+% \DoNotIndex{\next}
+% \DoNotIndex{\noexpand}
+% \DoNotIndex{\noindent}
+% \DoNotIndex{\null}
+% \DoNotIndex{\p@}
+% \DoNotIndex{\par}
+% \DoNotIndex{\parbox}
+% \DoNotIndex{\raggedright}
+% \DoNotIndex{\relax}
+% \DoNotIndex{\renewcommand}
+% \DoNotIndex{\reserved@a}
+% \DoNotIndex{\scriptsize}
+% \DoNotIndex{\setbox}
+% \DoNotIndex{\setlength}
+% \DoNotIndex{\sloppy}
+% \DoNotIndex{\small}
+% \DoNotIndex{\smallskip}
+% \DoNotIndex{\smallskipamount}
+% \DoNotIndex{\space}
+% \DoNotIndex{\stepcounter}
+% \DoNotIndex{\string}
+% \DoNotIndex{\strut}
+% \DoNotIndex{\test}
+% \DoNotIndex{\the}
+% \DoNotIndex{\tiny}
+% \DoNotIndex{\tw@}
+% \DoNotIndex{\typeout}
+% \DoNotIndex{\undefined}
+% \DoNotIndex{\value}
+% \DoNotIndex{\vbox}
+% \DoNotIndex{\vfil}
+% \DoNotIndex{\vfill}
+% \DoNotIndex{\vskip}
+% \DoNotIndex{\vspace}
+% \DoNotIndex{\wd}
+% \DoNotIndex{\xdef}
+% \DoNotIndex{\z@}
+%
+% \begin{abstract}
+%   This article describes the use and the implementation of the 
+%   \emph{slidenotes class}.
+%   Its purpose is the typesetting of slides and accompanying notes.
+%   Slides can be in portrait or landscape orientation.
+%   Options are the typesetting of the slides or slides plus notes,
+%   or a collection of slides in small format.
+% \end{abstract}
+%
+% \tableofcontents
+%
+% \section{Usage}
+%
+% An input file may consist of a series of slides accompanied
+% by notes. Below the format of a slide in a nutshell:
+%
+% \DescribeEnv{slide}
+% \begin{verbatim}
+% \begin{slide}[SLIDE TITLE (optional)]
+%    ...
+%    \slidesubtitle{SUBTITLE}
+%    ...
+%    <more slide text>
+%    ...
+% \end{slide}
+% \end{verbatim}
+%
+% or
+%
+% \DescribeEnv{portraitslide}
+% \begin{verbatim}
+% \begin{portraitslide}[SLIDE TITLE (optional)]
+%    ...
+% \end{portraitslide}
+% \end{verbatim}
+%
+% \DescribeEnv{landscapeslide}
+% \begin{verbatim}
+% \begin{landscapeslide}[SLIDE TITLE (optional)]
+%    ...
+% \end{landscapeslide}
+% \end{verbatim}
+%
+% Do not put anything text outside notes/slide, 
+% because it interferes destructively with the layout.
+%
+% \DescribeEnv{note}
+% \begin{verbatim}
+% \begin{note}
+%    ...
+%    \cue{MARGIN TEXT}
+%    ...
+%    <more note text>
+%    ...
+% \end{note}
+% \end{verbatim}
+%
+% Use |\chapter| for the main structure, each note will
+% be converted to a |\section|.
+% Several parameters and font macro's are defined for various
+% style features; they can be redefined, either in the document
+% or in the \emph{slidenotes.cfg} file.
+% These parameters exist for the dimensions of the slide,
+% the font in the various text parts, several standard texts.
+%
+% Options exist for:
+% \begin{itemize}\setlength{\itemsep}{0pt}
+% \item choosing between slides, slides + notes, a collection of slides; 
+% \item landscape or portrait format;
+% \item notes in a type one notch smaller than in the slides;
+% \item variation in frame around slide.
+% \item variation in vertical centering of the contents.
+% \end{itemize}
+% 
+% See the implementation sections for further details.
+% 
+% \StopEventually{\PrintChanges}
+%
+% \section{Identification}
+%
+%    This document class can only be used with \LaTeXe, so we make
+%    sure that an appropriate message is displayed when another \TeX{}
+%    format is used.
+%
+%    \begin{macrocode}
+%<cls|obox>\NeedsTeXFormat{LaTeX2e}[1995/12/01]
+%    \end{macrocode}
+%
+%    Announce class names and versions:
+%    \begin{macrocode}
+%<*cls>
+\ProvidesClass{slidenotes}[1998/04/23 3.27  Slides and notes]
+%    \end{macrocode}
+%
+% \section{Declaration of Class Options}
+%
+%    In this part we define the options for this class that are additional
+%    to those of its parent class.
+%
+% \subsection{Show Options to User}
+%
+% Show options to the user with option |help|.
+%
+%    \begin{macrocode}
+\DeclareOption{help}{\ClassWarningNoLine{slidenotes}{%
+    Options (first one is default):
+      \MessageBreak
+    notes,slides,minis:\space type of production;
+      \MessageBreak
+    portrait,landscape:\space slide orientation;
+      \MessageBreak
+    mixed,unmixed,anti:\space both, chosen, anti orientation;
+      \MessageBreak
+    center,nocenter,squeeze:\space vertical slide position;
+      \MessageBreak
+    rect,oval,rules,drules,noframe:\space type of slideframe;
+      \MessageBreak
+    newpage,nonewpage:\space yes/no start slide on new page;
+      \MessageBreak
+    smallnotes:\space notes one notch smaller}}
+%    \end{macrocode}
+%
+% \subsection{Slides and/or Notes}
+%
+% \begin{macro}{\ifnotes}
+% \begin{macro}{\ifslides}
+% \begin{macro}{\ifminis}
+% Flag |\ifnotes| governs the production of notes in the
+% typesetting of slides and notes, 
+% flag |\ifslides| signals the typesetting of slides only
+% and |\ifminis| is for the production of a smallsized slide collection.
+% Options |notes|, |slides| and |minis| perform the selection
+% of these modes.
+%
+%    \begin{macrocode}
+\newif\ifnotes
+\newif\ifslides
+\newif\ifminis
+\DeclareOption{notes}{\notestrue\minisfalse\slidesfalse}
+\DeclareOption{slides}{\notesfalse\minisfalse\slidestrue}
+\DeclareOption{minis}{\notesfalse\ministrue\slidesfalse}
+%    \end{macrocode}
+% \end{macro}
+% \end{macro}
+% \end{macro}
+%
+% \subsection{Portrait or Landscape Orientation}
+%
+% \begin{macro}{\iflandscape}
+% Typesetting of slides can come in portrait or landscape format;
+% even mixing of these within one document is possible.
+%
+%    \begin{macrocode}
+\newif\iflandscape
+\DeclareOption{landscape}{\landscapetrue}
+\DeclareOption{portrait}{\landscapefalse}
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\ifmixed}
+% \begin{macro}{\ifanti}
+% The next series of flags control the production of mixed portrait\slash
+% landscape slides or runs with one orientation only.
+%
+% With the |mixed| option one may mix portrait and landscape
+% oriented slides. If a slide has an orientation differing
+% from the one currently in effect (from the landscape and
+% portrait class option), it will be rotated over 90 degrees.
+% This however, requires the presence of one of the graphics
+% styles (\emph{graphics.sty} or \emph{graphicx.sty}) and
+% a conforming printer driver.
+% If one of these styles is not already present, one 
+% will be loaded at the start of the document.
+%
+% The |unmixed| option is for the case where rotation is
+% not possible (as for ex. the native OzTeX printer driver)
+% or not wanted. Only slides conforming to the current
+% orientation are typeset. E.g. if landscape format is chosen, 
+% then all slides produced from the environments |landscapeslide|
+% and the neutral |slide| are done, those of |portraitslide| are skipped.
+% If there are any slides skipped,
+% then a warning will be issued and the job must be rerun with
+% the |anti| option; this will produce the
+% missing slides in the complementary orientation.
+% The |anti| option can coexist with the |unmixed| option.
+%
+%    \begin{macrocode}
+\newif\ifmixed
+\newif\ifanti
+\DeclareOption{mixed}{\mixedtrue\antifalse}
+\DeclareOption{unmixed}{\mixedfalse}
+\DeclareOption{anti}{\mixedfalse\antitrue}
+%    \end{macrocode}
+% \end{macro}
+% \end{macro}
+%
+% \subsection{Vertical Centering of Slide Material}
+%
+% \begin{macro}{\ifcenter}
+% \begin{macro}{\ifsqueeze}
+% Everything below the title at the head of the slide can
+% be centered vertically as well as kept tightly below the
+% head, the options |center| and |nocenter| accomplish this. 
+% Filling will be done with |\vfil|, thereby allowing it
+% to be overridden simply by the inclusion of a |\vfill|.
+% Furthermore one can |squeeze| the slidebox to minimal height
+% for the slides + notes combination.
+%
+%    \begin{macrocode}
+\newif\ifcenter
+\newif\ifsqueeze
+\DeclareOption{center}{\squeezefalse\centertrue}
+\DeclareOption{nocenter}{\squeezefalse\centerfalse}
+\DeclareOption{squeeze}{\squeezetrue\centerfalse}
+%    \end{macrocode}
+% \end{macro}
+% \end{macro}
+%
+% \subsection{Suppress Newpage with Slide}
+%
+% \begin{macro}{\ifnewpage}
+% In typesetting notes it may be usefull to suppress the
+% newpage at the beginning of a slide.
+% This option has effect in note production only.
+%
+%    \begin{macrocode}
+\newif\ifnewpage
+\DeclareOption{newpage}{\newpagetrue}
+\DeclareOption{nonewpage}{\newpagefalse}
+%    \end{macrocode}
+% \end{macro}
+%
+% \subsection{Notes in Smaller Type}
+%
+% \begin{macro}{\ifsmallnotes}
+% The \texttt{smallnotes} option switches the font set
+% in the notes one notch smaller than the standard
+% sizes chosen in the style. The sizes in the slides
+% are always those specified by the style.
+%
+%    \begin{macrocode}
+\newif\ifsmallnotes
+\smallnotesfalse
+\DeclareOption{smallnotes}{\smallnotestrue}
+%    \end{macrocode}
+% \end{macro}
+%
+% \subsection{Variation in Slideframe}
+%
+% \begin{macro}{\framevariant}
+% The frame of a slide can be rectangular, oval,
+% delineated by rules or empty.
+%
+%    \begin{macrocode}
+\newcommand*\framevariant{}
+\DeclareOption{noframe}{\renewcommand*\framevariant{n}}
+\DeclareOption{rules}{\renewcommand*\framevariant{r}}
+\DeclareOption{drules}{\renewcommand*\framevariant{d}}
+\DeclareOption{rect}{\renewcommand*\framevariant{f}}
+\DeclareOption{oval}{\renewcommand*\framevariant{o}}
+%    \end{macrocode}
+% \end{macro}
+%
+% The |\obox| macro is in file \texttt{obox.sty};
+% if necessary it is read when document processing starts.
+%
+%    \begin{macrocode}
+\AtBeginDocument{\@ifundefined{obox}%
+  {\IfFileExists{obox.sty}{\RequirePackage{obox}}%
+    {\if\framevariant o
+    \ClassWarningNoLine{slidenotes}{oval option disabled}%
+    \renewcommand*\framevariant{f}\fi}}%
+  {}}
+%    \end{macrocode}
+%
+% \begin{macro}{\ovalslideframerule}
+% An oval slideframe is drawn using LaTeX's picture command.
+% Therefore the range of linethicknesses is restricted to
+% those provided by the circle fonts. The following macro
+% is defined to one of the standard linethickness commands.
+%
+%    \begin{macrocode}
+\newcommand*\ovalslideframerule{\thicklines}
+%    \end{macrocode}
+% \end{macro}
+%
+% \subsection{Pass Options and Load Parent Class}
+%
+% \begin{macro}{\parentclass}
+% Since the \emph{slidenotes class} is implemented as a modification
+% of an existing document class, we must load the parent class.
+% However in order to ease changes in parent class the
+% name of this class is parametrized in macro |\parentclass|.
+% An obvious candidate is \emph{report} or friends.
+%
+% Customize with a definition of |\parentclass| before
+% calling |\documentclass|.
+%
+%    \begin{macrocode}
+\providecommand\parentclass{report}
+%    \end{macrocode}
+% \end{macro}
+%
+% Set the class defaults.
+%
+%    \begin{macrocode}
+\ExecuteOptions{notes,portrait,mixed,rect,center,newpage}
+%    \end{macrocode}
+%
+% The options of the |\documentclass| call which are not specific for the
+% \emph{slidenotes class} must be passed to the parent class.
+% We take the opportunity to select some defaults, e.g.
+% production of a titlepage in case the parent class is \emph{article}.
+%
+%    \begin{macrocode}
+\DeclareOption*{\PassOptionsToClass{\CurrentOption}{\parentclass}}
+\PassOptionsToClass{titlepage,a4paper}{\parentclass}
+\ProcessOptions
+%    \end{macrocode}
+%
+% After this we load the parent class.
+% Note that the landscape option is not passed if \texttt{notes}
+% is also specified.
+% For the production of skipped slides we may also need
+% landscaped printing.
+%
+%    \begin{macrocode}
+\iflandscape\ifnotes\else
+  \PassOptionsToClass{landscape}{\parentclass}%
+\fi\fi
+\LoadClass{\parentclass}
+%    \end{macrocode}
+%
+% Show some of the options chosen.
+%
+%    \begin{macrocode}
+\ClassWarningNoLine{slidenotes}{%
+  \iflandscape LANDSCAPE\else PORTRAIT\fi
+  \space SLIDES\space
+  \ifminis COLLECTION \fi \ifnotes + NOTES \fi
+  PRODUCTION}
+%    \end{macrocode}
+%
+% \section{Some Useful Macros}
+%
+% We define some helpfull macros first, as we need them later on.
+% Defining is with |\providecommand| just in case the parent class
+% has already loaded them.
+%
+% \begin{macro}{\@swapdimens}
+% This macro swaps two dimens with the help of a third.
+%
+%    \begin{macrocode}
+\providecommand*\@swapdimens[3]{#3=#1 #1=#2 #2=#3\relax}
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\@ifemptyarg}
+% Testing for the presence or absence of a parameter.
+%
+%    \begin{macrocode}
+\providecommand{\@ifemptyarg}[1]{% {absence}{presence}
+  \ifx\@empty#1\@empty
+  \expandafter\@firstoftwo\else\expandafter\@secondoftwo\fi}
+%    \end{macrocode}
+% \end{macro}
+%
+% \subsection{Postprocessing of Options}
+%
+% Reset the squeeze option to false when slides or minis are produced.
+% This is done to prevent the slide numbering jumping up and down.
+%
+%    \begin{macrocode}
+\ifminis\squeezefalse\fi
+\ifslides\squeezefalse\fi
+%    \end{macrocode}
+%
+% Production of notes turns |mixed| on and |anti| off.
+% When typesetting notes, no rotation on the part of the
+% dvi driver is required; both can be displayed.
+%
+%    \begin{macrocode}
+\ifnotes\mixedtrue\antifalse\fi
+%    \end{macrocode}
+%
+% When the skipped slides are in production we must effectively
+% change the orientation from landscape to portrait or vice versa.
+%
+%    \begin{macrocode}
+\ifanti
+  \iflandscape\landscapefalse\else\landscapetrue\fi
+  \ClassWarningNoLine{slidenotes}{ANTI OPTION => ORIENTATION CHANGED}
+\fi
+%    \end{macrocode}
+%
+% \DescribeEnv{verbatim}
+% We need the \emph{verbatim.sty} for skipping portions of the text.
+%
+%    \begin{macrocode}
+\RequirePackage{verbatim}
+%    \end{macrocode}
+%
+% \DescribeMacro{\rotatebox}
+% We need the |\rotatebox| macro in case of mixed slides or minis;
+% if necessary load \emph{graphics.sty}.
+% We are even prepared for the case where this file cannot be found.
+%
+%    \begin{macrocode}
+\ifmixed\ifnotes\else
+  \AtBeginDocument{%
+    \@ifundefined{rotatebox}%
+      {\IfFileExists{graphics.sty}%
+        {\RequirePackage{graphics}}%
+        {\mixedfalse}%
+      }{}}
+\fi\fi
+%    \end{macrocode}
+%
+% \section{Dimensions}
+%
+% \begin{macro}{\slidewidth}
+% \begin{macro}{\slideheight}
+% We give default values for height and width in portrait format,
+% |\slideheight| and |\slidewidth| respectively. 
+% In the initialization section the landscape format is set
+% by an exchange of height and width. Please note that
+% these values are set for slides production: magnified values.
+% They will be automatically diminished when slides \&\ notes are made.
+% All other dimensions (frame separation, linethickness, etc.)
+% must be given unmagnified values, just as one would do in
+% normal typesetting.
+%
+%    \begin{macrocode}
+\newlength\slidewidth
+\newlength\slideheight
+\setlength\slidewidth{176mm}
+\setlength\slideheight{248mm}
+%    \end{macrocode}
+% \end{macro}
+% \end{macro}
+%
+% \begin{macro}{\slidemagnification}
+% For the production of the slides the magnification is set to
+% |\slidemagnification|.
+%
+%    \begin{macrocode}
+\newcommand*\slidemagnification{\magstep4}
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\slideboxrule}
+% \begin{macro}{\slideboxsep}
+% \begin{macro}{\slidenotesep}
+% \begin{macro}{\slidetitlesep}
+% Furthermore we define special parameters for the
+% separation between frame and contents of the slide,
+% |\slideboxsep| and for the thickness of the frame, |\slideboxrule|.
+% Length |\slidenotesep| is the distance between the slide
+% and the note, |\slidetitlesep| the skip below a call of
+% a (sub)title macro.
+%
+%    \begin{macrocode}
+\newlength\slideboxrule
+\newlength\slideboxsep
+\newlength\slidenotesep
+\newlength\slidetitlesep
+\setlength\slideboxrule{.2mm}
+\setlength\slideboxsep{3mm}
+\setlength\slidenotesep{8mm}
+\setlength\slidetitlesep{\z@}
+%    \end{macrocode}
+% \end{macro}
+% \end{macro}
+% \end{macro}
+% \end{macro}
+%
+% \section{Registers}
+% 
+% \begin{macro}{\slidecounter}
+% The slides are counted and the counter is reset whenever
+% a new chapter is begun, if there is a chapter structure, of course.
+%
+%    \begin{macrocode}
+\@ifundefined{c@chapter}%
+  {\newcounter{slidecounter}}%
+  {\newcounter{slidecounter}[chapter]}
+%    \end{macrocode}
+% \end{macro}
+% 
+% \begin{macro}{\missedslidecounter}
+% If we have both the |mixed| and |anti| options off we must
+% keep count of the number of slides passed over.
+% Always define this counter, it may be present in the auxiliary
+% files from a previous run.
+% We cannot use the standard \LaTeX's |\newcounter| command, because the
+% the value reported will be the value produced by the last
+% included file; the reason being the recording of the counter
+% in the auxiliary files. Therefore we use plain \TeX's |\newcount|.
+%
+%    \begin{macrocode}
+\newcount\missedslidecounter
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\minicounter}
+% Minis come just four to a page, therefore we count them.
+%
+%    \begin{macrocode}
+\newcounter{minicounter}
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\slidebox}
+% Slides are typeset in a box for later placement and
+% height adjustement.
+%
+%    \begin{macrocode}
+\newsavebox\slidebox
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\slidemarker}
+% Slides are marked by a text and a number. The text by
+% default comes from the |\chapter| macro and is put into
+% a token register named |\slidemarker|.
+% In the article style, however there is no chapter structure.
+% There we intialize this
+% token register from the |\title|; note that we need to do this
+% at |\begin{document}|, because |\maketitle| interfers
+% by setting |\@title| empty.
+%
+%    \begin{macrocode}
+\newtoks\slidemarker
+\AtBeginDocument{%
+  \@ifundefined{@title}{\def\@title{\Collection}}{}%
+  \slidemarker={\@title}}
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\everyslide}
+% \begin{macro}{\everynote}
+% At the start of each slide a token register |\everyslide| is executed,
+% where the user can place settings that should be local to each slide. 
+% The same for the start of each note where |\everynote| is executed.
+%
+%    \begin{macrocode}
+\newtoks\everyslide
+\newtoks\everynote
+%    \end{macrocode}
+% \end{macro}
+% \end{macro}
+%
+% \section{Note Environment}
+%
+% \begin{environment}{note}
+% In case of productions of slides the notes are simply left out;
+% we effectuate this with the comment mechanism of the
+% \emph{verbatim.sty}. Otherwise the material in
+% the \texttt{note} environment is typeset.
+% The environment for notes is started with font selections;
+% the fontsize is initialized to normalsize, but all
+% sizes are set one notch down for the |smallnotes| option.
+% Execution starts the note with the code in token register |\everynote|.
+%
+%    \begin{macrocode}
+\ifnotes
+\newenvironment{note}[1][]{%
+  \notesfont
+  \ifsmallnotes\smallersizes\fi
+  \normalsize
+  \the\everynote
+%    \end{macrocode}
+%
+% Separate slide and note with some whitespace.
+%
+%    \begin{macrocode}
+  \addvspace{\slidenotesep}%
+%    \end{macrocode}
+%
+% We use the \texttt{list} environment for offsetting
+% the margin inside the notes, a variation on the
+% \texttt{quote} environment. However, the leftmargin is
+% reduced to zero, because we do not want extra indentation
+% for the text of the notes.
+%
+%    \begin{macrocode}
+  \list{}{\leftmargin=\z@ 
+  	\rightmargin=\marginwidth
+  	\parsep=\parskip}\item[]
+%    \end{macrocode}
+%
+% Finish the \texttt{note} environment, close page with a filler
+% when newpage option is in effect.
+%
+%    \begin{macrocode}
+  \ignorespaces}{\endlist\ifnewpage\vfill\fi}
+%    \end{macrocode}
+%
+% If notes are not wanted, |\let| the |note| environment to |comment|.
+%
+%    \begin{macrocode}
+\else
+  \let\note=\comment
+  \let\endnote=\endcomment
+\fi
+%    \end{macrocode}
+% \end{environment}
+%
+% \begin{macro}{\smallersizes}
+% This macro switches all of \LaTeX's sizes one notch down (except
+% for |\tiny|, the smallest size).
+%
+%    \begin{macrocode}
+\newcommand*\smallersizes{%
+  \let\Huge\huge
+  \let\huge\LARGE
+  \let\LARGE\Large
+  \let\Large\large
+  \let\large\normalsize
+  \let\normalsize\small
+  \let\small\footnootsize
+  \let\footnotesize\scriptsize
+  \let\scriptsize\tiny
+  }
+%    \end{macrocode}
+% \end{macro}
+%
+% \section{Slide Environment}
+%
+% \subsection{Slide Orientation}
+%
+% \begin{environment}{portraitslide}
+% \begin{environment}{landscapeslide}
+% \begin{environment}{slide}
+% Here we differentiate between the various possibilities
+% for the slide orientation.
+% Note that we set a flag for the current orientation
+% in order to allow orientation dependent code.
+%
+% First the case of mixed orientations.
+%
+%    \begin{macrocode}
+\ifmixed
+\newenvironment{portraitslide}{%
+  \landscapeslidefalse
+  \iflandscape\@swapdimens\slideheight\slidewidth\@tempdima
+  \fi
+  \@slide}{\@endslide
+  \iflandscape\putslide{90}\else\putslide{0}\fi}
+\newenvironment{landscapeslide}{%
+  \landscapeslidetrue
+  \iflandscape\else\@swapdimens\slideheight\slidewidth\@tempdima
+  \fi
+  \@slide}{\@endslide
+  \iflandscape\putslide{0}\else\putslide{90}\fi}
+\newenvironment{slide}{\@slide}{\@endslide\putslide{0}}
+%    \end{macrocode}
+%
+% Secondly the case where missed slides are produced. 
+% A tricky point here is that we have already complemented the
+% value of |\iflandscape|; therefore no dimensions
+% have to be interchanged and the tests all seem
+% to point the wrong way.
+%
+%    \begin{macrocode}
+\else\ifanti
+\newenvironment{portraitslide}{%
+  \landscapeslidefalse
+  \iflandscape
+    \refstepcounter{slidecounter}%
+    \let\@slide=\comment\let\@endslide=\endcomment
+  \fi
+  \@slide}{\@endslide
+  \iflandscape\else\putslide{0}\fi}
+\newenvironment{landscapeslide}{%
+  \landscapeslidetrue
+  \iflandscape\else
+    \refstepcounter{slidecounter}%
+    \let\@slide=\comment\let\@endslide=\endcomment
+  \fi
+  \@slide}{\@endslide
+  \iflandscape\putslide{0}\fi}
+\newenvironment{slide}{%
+  \refstepcounter{slidecounter}%
+  \let\@slide=\comment\let\@endslide=\endcomment
+  \@slide}{\@endslide}
+%    \end{macrocode}
+%
+% Finally the case of separate slide orientation.
+% A skipped slide must be counted always in |slidecounter|
+% in order to keep the numbers straight and is also recorded
+% in |missedslidecounter|; the |comment| environment
+% is used to get rid of a skipped slide.
+%
+%    \begin{macrocode}
+\else
+\newenvironment{portraitslide}{%
+  \landscapeslidefalse
+  \iflandscape
+    \refstepcounter{slidecounter}%
+    \global\advance\missedslidecounter\@ne
+    \let\@slide=\comment\let\@endslide=\endcomment
+  \fi
+  \@slide}{\@endslide
+  \iflandscape\else\putslide{0}\fi}
+\newenvironment{landscapeslide}{%
+  \landscapeslidetrue
+  \iflandscape\else
+    \refstepcounter{slidecounter}%
+    \global\advance\missedslidecounter\@ne
+    \let\@slide=\comment\let\@endslide=\endcomment
+  \fi
+  \@slide}{\@endslide
+  \iflandscape\putslide{}\fi}
+\newenvironment{slide}{\@slide}{\@endslide\putslide{0}}
+\fi\fi
+%    \end{macrocode}
+% \end{environment}
+% \end{environment}
+% \end{environment}
+%
+% And then we have to report if there are any skipped slides.
+%
+%    \begin{macrocode}
+\ifmixed\else\ifanti\else
+\AtEndDocument{\ifnum\missedslidecounter>\z@
+  \ClassWarningNoLine{slidenotes}{Rerun with `anti'
+  for \the\missedslidecounter\space slide(s) skipped}%
+  \fi}
+\fi\fi
+%    \end{macrocode}
+%
+% \subsection{Placing a Slide}
+%
+% \begin{macro}{\putslide}
+% The positioning of a slide is split off from its
+% production in the following macro.
+% We define this positioning differently for the
+% various production schemes.
+%
+%    \begin{macrocode}
+\ifnotes
+  \newcommand*\putslide[1]{\noindent\rputslide{#1}\par}
+\fi
+\ifslides
+  \newcommand*\putslide[1]{\begin{center}\rputslide{#1}\end{center}}
+\fi
+\ifminis
+  \newcommand*\putslide[1]{\noindent
+    \rputslide{#1}%
+    \stepcounter{minicounter}%
+      \ifnum\value{minicounter}=2
+        \par
+      \else\ifnum\value{minicounter}=4
+        \newpage\setcounter{minicounter}{0}%
+      \else\hfil\fi\fi}
+\fi
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\rputslide}
+% We alse need variants in accordance with the need of slide rotation.
+%
+%    \begin{macrocode}
+\newcommand*\rputslide[1]{\usebox{\slidebox}}
+\ifmixed\ifnotes\else
+  \renewcommand*\rputslide[1]{%
+    \ifnum#1=\z@\usebox{\slidebox}%
+    \else\rotatebox{#1}{\kern-.5\slidewidth\usebox{\slidebox}}%
+    \fi}
+\fi\fi
+%    \end{macrocode}
+% \end{macro}
+%
+% \subsection{Typeset Slide Contents}
+%
+% \begin{macro}{\@slide}
+% Slides are collected between |\@slide| and |\@endslide|.
+% Each slide starts a new page, except when a collection is made
+% or possibly in note production.
+% We program the |\newpage| here in order to get the pagenumbering
+% in the table of contents right.
+% The font is set to the special chosen |\slidefont|.
+% The fontsize is initialized to the normal size.
+% From the optional argument the title is put into the \emph{toc} file.
+%
+% \subsubsection{Starting a Slide}
+%
+%    \begin{macrocode}
+\newcommand*\@slide[1][]{%
+	\ifnotes
+		\ifnewpage\newpage\else\addvspace{\bigskipamount}\fi
+	\else
+		\ifminis\else\newpage\fi
+	\fi
+  \refstepcounter{slidecounter}%
+  \slidefont
+  \normalsize
+%    \end{macrocode}
+%
+% Write a line to the \emph{.toc} file when notes are in production.
+%
+%    \begin{macrocode}
+\ifnotes
+  \@ifemptyarg{#1}%
+    {\addcontentsline{toc}{section}{\Slide\,\theslidecounter}}%
+    {\addcontentsline{toc}{section}{#1}}%
+\fi
+%    \end{macrocode}
+%
+% The contents of the slide is typeset in a \texttt{minipage},
+% which is captured in a box. 
+% Execution starts the box with the code in token register |\everyslide|.
+% When the optional argument is not empty, this
+% furnishes the slide title at its top.
+% The width of the \texttt{minipage}, in which the contents of
+% the slide are typeset,
+% is the |\slidewidth| adjusted for the thickness of the
+% surrounding frame and the separation between frame and contents.
+%
+%    \begin{macrocode}
+  \@tempdima\slidewidth
+  \advance\@tempdima-\tw@\slideboxrule
+  \advance\@tempdima-\tw@\slideboxsep
+  \@tempdimb\slideheight
+  \advance\@tempdimb-\tw@\slideboxrule
+  \advance\@tempdimb-\tw@\slideboxsep
+  \begin{lrbox}{\slidebox}%
+    \the\everyslide
+    \ifsqueeze
+        \begin{minipage}{\@tempdima}%
+    \else
+        \begin{minipage}[][\@tempdimb][t]{\@tempdima}%
+    \fi
+%    \end{macrocode}
+%
+% We want to find out the height of the slide, therefore
+% we catch the slide contents in a |\vbox|.
+%
+%    \begin{macrocode}
+     \setbox\@tempboxa=\vbox\bgroup\leavevmode
+     \@ifemptyarg{#1}{}{\slidetitle{#1}}\ifcenter\vfil\fi
+     \ignorespaces}
+%    \end{macrocode}
+% \end{macro}
+%
+% \subsubsection{Finishing a Slide}
+%
+% \begin{macro}{\@endslide}
+% In the second part of slide typesetting we construct the slide.
+%
+%    \begin{macrocode}
+\newcommand*\@endslide{%
+%    \end{macrocode} 
+%
+% First we do vertical centering with |\vfil| if required.
+%
+%    \begin{macrocode}
+  \ifcenter\vfil\fi
+%    \end{macrocode} 
+%
+% Here we close the catching box and check its height.
+%
+%    \begin{macrocode}
+    \egroup
+    \chk@slideheight\@tempboxa
+    \unvbox\@tempboxa
+    \end{minipage}\end{lrbox}%
+%    \end{macrocode}
+%
+% The slide contents are enclosed in a framed box and
+% then together with the marker placed into a |\parbox|.
+% The height of the box is
+% adjusted to slideheight minus frame.
+% The complete slide is again captured in |\slidebox| because
+% we may want to subject it to a rotation.
+%
+%    \begin{macrocode}
+  \sbox\slidebox{\parbox{\slidewidth}{%
+    \fboxsep\slideboxsep
+    \fboxrule\slideboxrule
+    \csname frame@\framevariant\endcsname
+    \\*[\smallskipamount]
+    \makebox[\slidewidth]{%
+      \small\strut\the\slidemarker
+      \hfil\Slidenumber~\theslidecounter}%
+  }}}
+%    \end{macrocode}
+% \end{macro}
+%
+% \subsubsection{Framing a Slide}
+%
+% \begin{macro}{\frame@f}
+% Rectangular box around slide contents.
+%    \begin{macrocode}
+\newcommand*\frame@f{%
+  \fbox{\usebox\slidebox}%
+  }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\frame@o}
+% Oval box around slide contents.
+%    \begin{macrocode}
+\newcommand*\frame@o{%
+  \@tempdimb\dp\slidebox
+  \advance\@tempdimb-\fboxsep
+  \advance\@tempdimb-\fboxrule
+  \obox[][\ovalslideframerule]{%
+    \raisebox{\@tempdimb}{\usebox\slidebox}}%
+  }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\frame@n}
+% Nothing around slide contents.
+%    \begin{macrocode}
+\newcommand*\frame@n{%
+  \advance\fboxsep\fboxrule \fboxrule\z@
+  \fbox{\usebox\slidebox}%
+  }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\frame@r}
+% Rule above and below slide contents.
+%    \begin{macrocode}
+\newcommand*\frame@r{%
+  \rule{\slidewidth}{\fboxrule}\\*[\fboxsep]%
+  \usebox{\slidebox}\\*[\fboxsep]%
+  \rule{\slidewidth}{\fboxrule}%
+  }
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\frame@d}
+% Double rules above and below slide contents.
+%    \begin{macrocode}
+\newcommand*\frame@d{%
+  \rule{\slidewidth}{\fboxrule}\\*[\tw@\fboxrule]%
+  \rule[\baselineskip]{\slidewidth}{\fboxrule}%
+    \vspace{-\baselineskip}\\*[\fboxsep]%
+  \usebox{\slidebox}\\*[\fboxsep]%
+  \rule{\slidewidth}{\fboxrule}\\*[\tw@\fboxrule]%
+  \rule[\baselineskip]{\slidewidth}{\fboxrule}%
+    \vspace{-\baselineskip}%
+  }
+%    \end{macrocode}
+% \end{macro}
+%
+% \subsubsection{Check Slide Height}
+%
+% \begin{macro}{\chk@slideheight}
+% Here we define the macro that checks the height of slides and
+% gives a warning when overfilling occurs. 
+% Keep the changes to |\dimen@| local by grouping.
+%
+%    \begin{macrocode}
+\newcommand*\chk@slideheight[1]{{%
+  \dimen@\ht#1
+  \advance\dimen@\dp#1
+  \ifnum\dimen@>\slideheight
+    \ClassWarning{slidenotes}{slide too high by \the\dimen@}%
+  \fi}}
+%    \end{macrocode}
+% \end{macro}
+%
+% \subsection{Titles on Slides}
+%
+% \begin{macro}{\slidetitle}
+% \begin{macro}{\slidesubtitle}
+% Put centered title or subtitle on the slide.
+% The first (and optional) argument controls the font setting.
+% These titles are followed by a |\medskip|; whitespace before
+% the title is the responsibility of the slidewriter.
+% These titles are suppressed if their argument somehow
+% turns out to be empty.
+%
+%    \begin{macrocode}
+\newcommand*\slidetitle{\@slidetitle{\slidetitlefont}}
+\newcommand*\slidesubtitle{\@slidetitle{\slidesubtitlefont}}
+\newcommand*\@slidetitle[2]{%
+    \@ifemptyarg{#2}{}%
+        {\begin{center}#1#2\end{center}\vspace{\slidetitlesep}}}
+%    \end{macrocode}
+% \end{macro}
+% \end{macro}
+%
+% \subsection{Slideformat Dependent Typesetting}
+%
+% \begin{macro}{\iflandscapeslide}
+% Here we define a flag to be used for the implementation
+% of format dependent code selection.
+% This flag is initialized to the current default orientation.
+%
+%    \begin{macrocode}
+\newif\iflandscapeslide
+\iflandscape\landscapeslidetrue\else\landscapeslidefalse\fi
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\portraitonly}
+% \begin{macro}{\landscapeonly}
+% Material can be selected on the basis the slide's format,
+% portrait or landscape orientation with respectively:\\
+% |\landscapeonly{...}|\\
+% |\portraitonly{...}|\\
+% For example, where a list can be placed without any difficulty
+% on a portrait slide, it may require the use of |multicols|
+% in landscapeformat.
+% If problems arise, e.g. with the fixing of catcodes, then use the
+% basic construction
+% |\iflandscapeslide .. \else ..\fi|
+%
+%    \begin{macrocode}
+\newcommand\landscapeonly[1]{\iflandscapeslide#1\fi}
+\newcommand\portraitonly[1]{\iflandscapeslide\else#1\fi}
+%    \end{macrocode}
+% \end{macro}
+% \end{macro}
+%
+% \subsection{Cues in the Margin}
+%
+% \begin{macro}{\marginwidth}
+% The length variable |\marginwidth| holds the margin space
+% that will be reserved for short remarks.
+%
+%    \begin{macrocode}
+\newlength\marginwidth
+\setlength\marginwidth{3cm}
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\cue}
+% Giving short remarks in the margin of the notes text.
+% To be used for finding specific text parts with a glance.
+%
+%    \begin{macrocode}
+\newcommand*\cue[2][\cuefont]{%
+  \marginpar{\hspace*{-\marginwidth}%
+  \parbox{\marginparwidth}{\raggedright\sloppy#1#2}}}
+%    \end{macrocode}
+% \end{macro}
+%
+% |\cue| cannot allow marginpar switching from left to
+% right margin when typesetting twosided material; therefore
+% force all marginpars into the same margin.
+%
+%    \begin{macrocode}
+\@mparswitchfalse
+%    \end{macrocode}
+%
+% \section{Style Features}
+%
+% \subsection{Redefine Chapter Code}
+%
+% In order to process the slide marking
+% two macro's in the production of chapter heads are redefined.
+% Also a new chapter starts a new page and the
+% pagestyle for this page is set to \texttt{empty}.
+%
+%    \begin{macrocode}
+\@ifundefined{c@chapter}{}{%
+  \let\old@makechapterhead=\@makechapterhead
+  \let\old@makeschapterhead=\@makeschapterhead
+  \renewcommand*\@makechapterhead[1]{%
+    \global\slidemarker={#1}\old@makechapterhead{#1}%
+    \thispagestyle{empty}\newpage}%
+  \renewcommand*\@makeschapterhead[1]{%
+    \global\slidemarker={#1}\old@makeschapterhead{#1}%
+    \thispagestyle{empty}\newpage}%
+  }
+%    \end{macrocode}
+%
+% \subsection{Pagestyle}
+%
+% Slides and minis want the \texttt{empty} style.
+%
+%    \begin{macrocode}
+\ifnotes\else\pagestyle{empty}\fi
+%    \end{macrocode}
+%
+% \subsection{Fonts}
+%
+% \begin{macro}{\headerfont}
+% \begin{macro}{\slidefont}
+% \begin{macro}{\notesfont}
+% \begin{macro}{\footnotefont}
+% \begin{macro}{\slidetitlefont}
+% \begin{macro}{\slidesubtitlefont}
+% \begin{macro}{\cuefont}
+% Choose fonts for the various elements of slides and notes.
+% Their names speak for themselves.
+%
+%    \begin{macrocode}
+\newcommand*\headerfont{\rmfamily}
+\newcommand*\slidefont{\sffamily}
+\newcommand*\notesfont{\rmfamily}
+\newcommand*\footnotefont{\sffamily\mdseries\upshape}
+\newcommand*\slidetitlefont{\Large\bfseries\boldmath}
+\newcommand*\slidesubtitlefont{\normalsize\bfseries\boldmath}
+\newcommand*\cuefont{\sffamily\bfseries\boldmath}
+%    \end{macrocode}
+% \end{macro}
+% \end{macro}
+% \end{macro}
+% \end{macro}
+% \end{macro}
+% \end{macro}
+% \end{macro}
+%
+% \section{Language Adjustments}
+%
+% \begin{macro}{\Collection}
+% \begin{macro}{\Slidenumber}
+% \begin{macro}{\Slide}
+% We define some language specific verbs, such
+% as |\Collection| and |\Slidenumber|.
+% To be customized by redefinition in the configuration file.
+%
+%    \begin{macrocode}
+\newcommand*\Collection{LECTURE NOTES}
+\newcommand*\Slidenumber{\#}
+\newcommand*\Slide{Slide}
+%    \end{macrocode}
+% \end{macro}
+% \end{macro}
+% \end{macro}
+%
+% \subsection{Example of Adjustements in Configuration File}
+%
+% Example of a configuration file with dutch equivalents
+% for language dependent items.
+%
+%    \begin{macrocode}
+%</cls>
+%<*cfg>
+\renewcommand*\Collection{COLLEGE AANTEKENINGEN}
+\renewcommand*\Slidenumber{Nr.}
+\renewcommand*\Slide{Transparant}
+%</cfg>
+%<*cls>
+%    \end{macrocode}
+%
+% \section{Directory Localization}
+%
+% \begin{macro}{\CurrentDirectory}
+% \begin{macro}{\DirectorySeparator}
+% We can determine from |\@currdir| which
+% character separates directories in a path name. 
+% E.g. in UNIX this is |/| from the string |./|, but
+% in the MacOS the current directory and the separator are both |:|.
+% Therefore we extract from |\@currdir| the last character 
+% (of two at most).\\
+% Make |\CurrentDirectory| a synonyme for |\@currdir|.
+%
+%    \begin{macrocode}
+\let\CurrentDirectory=\@currdir
+\def\DirectorySeparator#1#2`\^^M{\@ifemptyarg{#2}{#1}{#2}}
+\edef\DirectorySeparator{%
+	\expandafter\DirectorySeparator\CurrentDirectory`\^^M}
+%    \end{macrocode}
+% \end{macro}
+% \end{macro}
+%
+% \begin{macro}{\LastChar}
+% Another macro delivers the last character of a string.
+%
+%    \begin{macrocode}
+\providecommand*{\LastChar}[1]{%
+  \@ifemptyarg{#1}{}{\expandafter\@lastchar#1`\^^M}}
+\def\@lastchar#1#2`\^^M{\@ifemptyarg{#2}{#1}{\@lastchar#2`\^^M}}
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\DirectoryName}
+% The next macro ensures that a path name ends correctly, when
+% a filename is concatenated with it.
+% If the directory separator character isn't the last character,
+% it is added.
+%
+%    \begin{macrocode}
+\providecommand*{\DirectoryName}[1]{\@ifemptyarg{#1}{}%
+  {\if\LastChar{#1}\DirectorySeparator\relax#1\else
+    #1\DirectorySeparator\fi}}
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\Setfolder}
+% Macro |\Setfolder| can be used to install a standard
+% folder (directory) name.
+% E.g. a name |\figuresfolder| can be defined as the
+% standard place for figures.
+% Supply as first argument to |\Setfolder| the macro name
+% for the folder. e.g. |\figuresfolder| and as second
+% parameter its location on disk.
+% Below three of these folders (here initialized 
+% with empty names) are defined in the example configuration file.
+%    \begin{macrocode}
+\newcommand*\Setfolder[2]{\edef#1{\DirectoryName{#2}}}
+%</cls>
+%<*cfg>
+\Setfolder{\mainfolder}{}
+\Setfolder{\commonfolder}{}
+\Setfolder{\figuresfolder}{}
+%</cfg>
+%<*cls>
+%    \end{macrocode}
+% \end{macro}
+%
+% \section{Read Configuration File}
+%
+% Last, but not least, see if there is a configuration
+% file \texttt{slidenotes.cfg} and read it for the final adjustments.
+% In this file one can change things like the
+% font selection, size of various length variables, etc.
+%
+%    \begin{macrocode}
+\InputIfFileExists{slidenotes.cfg}{}{}
+%    \end{macrocode}
+%
+% \section{Process the Orientation Options}
+%
+% Final settings take place afterwards, because the variables
+% involved may have been changed value in the configuration file.
+%
+% \subsection{Page Orientation}
+%
+% In case of landscape orientation the height and width of the page
+% need to be exchanged for slides + notes, for slides
+% in the anti orientation also.
+% For notes we always use a portrait paperformat with 
+% both portrait and landscape oriented slides on it.
+%
+%    \begin{macrocode}
+\ifnotes
+  \iflandscape\@swapdimens\paperheight\paperwidth\@tempdima\fi
+\else
+  \ifanti\@swapdimens\paperheight\paperwidth\@tempdima\fi
+\fi
+%    \end{macrocode}
+%
+% \subsection{Slide Dimensions and Orientation}
+%
+% At this point height and width of the slides are known
+% in their final sizes. For the proces of typesetting they
+% have to be reduced by the magnification applied later on.
+%
+%    \begin{macrocode}
+\divide\slidewidth by\slidemagnification
+\multiply\slidewidth by\@m
+\divide\slideheight by\slidemagnification
+\multiply\slideheight by\@m
+%    \end{macrocode}
+%
+% In case of landscape format the height and width of slides
+% need to be exchanged, because they are defined in portrait format.
+%
+%    \begin{macrocode}
+\iflandscape\@swapdimens\slideheight\slidewidth\@tempdima\fi
+%    \end{macrocode}
+%
+% \section{Shutoff Titles if Necessary}
+%
+% \begin{macro}{\maketitle}
+% Kill the title and the chapter pages for slide production, 
+% but not when a collection is prepared.
+% Also allow for the fact that |\chapter| effects
+% a change to pagestyle \texttt{plain}.
+%
+%    \begin{macrocode}
+\ifslides
+  \renewcommand\maketitle{}
+  \@ifundefined{c@chapter}{}{%
+    \renewcommand*\@makechapterhead[1]{\global\slidemarker={#1}%
+      \thispagestyle{empty}}%
+    \renewcommand*\@makeschapterhead[1]{\global\slidemarker={#1}%
+      \thispagestyle{empty}}%
+  }
+\fi
+%    \end{macrocode}
+% \end{macro}
+%
+% Disable typesetting of the table of contents unless notes are
+% in production.
+%
+%    \begin{macrocode}
+\ifnotes\else\AtBeginDocument{\let\tableofcontents=\relax}\fi
+%    \end{macrocode}
+%
+% \section{Page Dimensions}
+%
+% Here we do some calculations on sizes and set the variables
+% to their proper values.
+%
+% \subsection{Fullsize Slides}
+%
+% First we typeset with an enlarged magnification.
+%
+%    \begin{macrocode}
+\ifslides
+  \mag\slidemagnification\relax
+%    \end{macrocode}
+%
+% Horizontal dimensions:
+%
+%    \begin{macrocode}
+  \setlength\hoffset{-1in}
+    \divide\hoffset by\slidemagnification
+    \multiply\hoffset by\@m
+  \setlength\textwidth{\paperwidth}
+    \divide\textwidth by\slidemagnification
+    \multiply\textwidth by\@m
+  \setlength\oddsidemargin{0pt}
+  \setlength\evensidemargin{0pt}
+%    \end{macrocode}
+%
+% Vertical dimensions:
+%
+%    \begin{macrocode}
+  \setlength\voffset{-1in}
+    \divide\voffset by\slidemagnification
+    \multiply\voffset by\@m
+  \setlength\headheight{0pt}
+  \setlength\headsep{0pt}
+  \setlength\textheight{\paperheight}
+    \addtolength\textheight{-2\topmargin}
+    \divide\textheight by\slidemagnification
+    \multiply\textheight by\@m
+\fi
+%    \end{macrocode}
+%
+% \subsection{Collection of Slides}
+%
+%    \begin{macrocode}
+\ifminis
+  \setlength\headheight{0pt}
+  \setlength\headsep{0pt}
+  \setlength\footskip{0pt}
+  \setbox\@tempboxa\vbox{\hbox{\slidefont\small\strut}\smallskip\null}
+  \@tempdima=2\slidewidth
+  \ifmixed
+    \advance\@tempdima by 2\ht\@tempboxa
+  \else
+    \advance\@tempdima by 8mm
+  \fi
+  \ifdim\@tempdima>\textwidth \setlength\textwidth{\@tempdima}\fi
+  \@tempdimb=2\slideheight
+    \advance\@tempdimb by 2\ht\@tempboxa
+  \ifdim\@tempdimb>\textheight
+    \setlength\textheight{\@tempdimb}
+    \@tempdimb\paperheight
+    \advance\@tempdimb-\textheight
+    \addtolength\topmargin{-\@tempdimb}
+  \fi
+  \setlength\oddsidemargin{0pt}
+  \setlength\evensidemargin{0pt}
+\fi
+%    \end{macrocode}
+%
+% \subsection{Slides plus Notes}
+%
+% Change margin settings and enlarge |\marginparwidth|
+% by the extra margin.
+%
+%    \begin{macrocode}
+\ifnotes
+  \setlength\marginparsep{5mm}
+  \addtolength\marginparwidth{\marginwidth}
+\fi
+%    \end{macrocode}
+%
+% Initialize the font.
+%
+%    \begin{macrocode}
+\notesfont
+%</cls>
+%    \end{macrocode}
+%
+% \section{Oval Macro's}
+%
+% Macro to translate dimensions\\ |#1{dimen}| or 
+% |#1(number)| $\rightarrow$
+% |#1{number\unitlength}|
+%
+%    \begin{macrocode}
+%<*obox>
+\ProvidesClass{obox}[1995/09/04 vs 1.2  Oval box change]
+\def\@pickonedim#1{\@ifnextchar(%)
+    {\@@pickonedim{#1}}{#1}}
+\def\@@pickonedim#1(#2){#1{#2\unitlength}}
+%    \end{macrocode}
+%
+% Redefinition of oval from the picture environment to\\
+% |\oval[position](width,height)[optional lrtb=parts]|\\
+% position parameter determis how oval will be placed:\\
+% |o| midpoint (default as in LaTeX picture environment)\\
+% |t| top of oval at baseline\\
+% |b| bottom of oval at baseline\\
+% |c| halfheight of oval at baseline\\
+% |n| neutral placement
+%
+%    \begin{macrocode}
+\gdef\oval{\@ifnextchar[%]
+    {\@oval}{\@oval[o]}}
+\gdef\@oval[#1](#2,#3){\@ifnextchar[%]
+    {\@@oval[#1](#2,#3)}{\@@oval[#1](#2,#3)[]}}
+\gdef\@@oval[#1](#2,#3)[#4]{\begingroup\boxmaxdepth \maxdimen
+  \@ovttrue \@ovbtrue \@ovltrue \@ovrtrue
+  \@tfor\reserved@a :=#4\do{\csname @ov\reserved@a false\endcsname}%
+  \@ovxx #2\unitlength \@ovyy #3\unitlength
+  \@tempdimb \ifdim\the@ovalradius=\z@
+    \ifdim \@ovyy >\@ovxx \@ovxx \else \@ovyy \fi
+    \else \the@ovalradius \fi
+  \advance \@tempdimb -\tw@\p@
+  \@getcirc \@tempdimb
+  \@ovro \ht\@tempboxa \@ovri \dp\@tempboxa
+  \@ovdx\@ovxx \advance\@ovdx -\@tempdima \divide\@ovdx \tw@
+  \@ovdy\@ovyy \advance\@ovdy -\@tempdima \divide\@ovdy \tw@
+  \@circlefnt \setbox\@tempboxa
+  \hbox{\if@ovr \@ovvert32\kern -\@tempdima \fi
+  \if@ovl \kern \@ovxx \@ovvert01\kern -\@tempdima \kern -\@ovxx \fi
+  \if@ovt \@ovhorz \kern -\@ovxx \fi
+  \if@ovb \raise \@ovyy \@ovhorz \fi}%
+  \advance\@ovdx\@ovro \advance\@ovdy\@ovro 
+  \if#1t\@ovdx\z@\@ovdy\tw@\@ovdy\fi
+  \if#1b\@ovdx\z@\@ovdy\z@\fi
+  \if#1c\@ovdx\z@\fi
+  \if#1n\@ovdx\z@\@ovdy\dp\@tempboxa\fi
+  \ht\@tempboxa\z@ \dp\@tempboxa\z@
+  \@put{-\@ovdx}{-\@ovdy}{\box\@tempboxa}%
+  \endgroup}
+%    \end{macrocode}
+%
+% Oval analogon of |\fbox| is added:\\
+% |\obox[optional ovalradius(length)][linethickness-cmd]{box-contents}|
+%
+%    \begin{macrocode}
+\def\obox{\@ifnextchar[%]
+    {\@obox}{\@@obox[][]}}
+\def\@obox[#1]{\@ifnextchar[%]
+    {\@@obox[#1]}{\@@obox[#1][]}}
+\def\@@obox[#1][#2]#3{%
+  \begingroup
+    \@ifemptyarg{#1}{}{\ovalradius{#1}}%
+    \setbox\z@\hbox{\advance\fboxsep\@wholewidth \fboxrule\z@ \fbox{#3}}%
+    \dimen@\ht\z@ \advance\dimen@\dp\z@ #2\let\unitlength\@empty
+    \leavevmode\oval[n](\wd\z@,\dimen@)\box\z@
+  \endgroup}
+\def\ovalradius{\@pickonedim\@ovalradius}
+\def\@ovalradius#1{\@tempdima#1\relax
+    \edef\the@ovalradius{\number\@tempdima sp}\ignorespaces}
+\def\ovalfraction#1{%
+    \edef\the@ovalradius{#1\noexpand\@tempdimb}\ignorespaces}
+\ovalradius{0pt}                % initialisation
+%</obox>
+%    \end{macrocode}
+% \Finale
+%
diff --git a/Master/texmf-dist/source/latex/slidenotes/slidenotes.ins b/Master/texmf-dist/source/latex/slidenotes/slidenotes.ins
new file mode 100644
index 00000000000..c36e0c24d62
--- /dev/null
+++ b/Master/texmf-dist/source/latex/slidenotes/slidenotes.ins
@@ -0,0 +1,36 @@
+%%
+%% This file will generate fast loadable files and documentation
+%% driver files from the doc files in this package when run through
+%% LaTeX or TeX.
+%%
+%%
+%% --------------- start of docstrip commands ------------------
+%%
+\def\batchfile{slidenotes.ins}
+\input docstrip.tex
+
+\preamble
+Copyright (C) 1993-1996 Hans van der Meer. All rights reserved.
+\endpreamble
+
+\keepsilent
+
+\generate{\file{slidenotes.cls}{\from{slidenotes.dtx}{cls}}
+          \file{slidenotes.cfg}{\from{slidenotes.dtx}{cfg}}
+          \file{obox.sty}{\from{slidenotes.dtx}{obox}}
+          }
+
+\ifToplevel{
+\Msg{***********************************************************}
+\Msg{*}
+\Msg{* Move into a directory searched by TeX:}
+\Msg{*}
+\Msg{* \space\space slidenotes.cls}
+\Msg{* \space\space slidenotes.cfg}
+\Msg{* \space\space obox.sty}
+\Msg{*}
+\Msg{* For the documentation run slidenotes.dtx through LaTeX.}
+\Msg{*}
+\Msg{***********************************************************}
+}
+\endinput
diff --git a/Master/texmf-dist/source/latex/slidenotes/slidenotes.readme b/Master/texmf-dist/source/latex/slidenotes/slidenotes.readme
new file mode 100644
index 00000000000..e0ace39955c
--- /dev/null
+++ b/Master/texmf-dist/source/latex/slidenotes/slidenotes.readme
@@ -0,0 +1,14 @@
+slidenotes.cls is a package for the easy production
+of a slide collection with annotations.
+
+slidenotes.cls builds on the report style (or variants).
+
+TeX the file slidenotes.ins to produce slidenotes.cls,
+TeX the file slidenotes.dtx to produce the documentation.
+
+File obox.sty contains some extra macros and a patch to \oval.
+
+The file exam.cfg is included as an example how to customize typesetting.
+
+Hans van der Meer
+hansm@fwi.uva.nl