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new file mode 100644
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diff --git a/seminar_latex20200202.dif b/seminar_latex20200202.dif
deleted file mode 100644
index 2f70f74..0000000
--- a/seminar_latex20200202.dif
+++ /dev/null
@@ -1,745 +0,0 @@
----
- tex/latex/seminar/seminar.bg2 |    8 
- tex/latex/seminar/seminar.bg3 |  608 ++++++++++++++++++++++++++++++++++++++++++
- tex/latex/seminar/seminar.cls |    9 
- tex/latex/seminar/seminar.sty |   17 -
- 5 files changed, 622 insertions(+), 21 deletions(-)
-
---- texmf-dist/tex/latex/seminar/seminar.bg2
-+++ texmf-dist/tex/latex/seminar/seminar.bg2	2020-06-07 08:26:07.000000000 +0000
-@@ -485,7 +485,6 @@
-     \copy\@@slidebox
-     \pst@Verb{-1 \tx@BOL }}}
- 
--\iffalse
- % We must redefine too the /BeginOL macro form pstricks.pro, as "all" is now -1
- % \def\pst@initoverlay#1{\pst@Verb{\tx@InitOL /TheOL (#1) def}}
- \def\pst@initoverlay#1{%
-@@ -508,14 +507,12 @@
- \aftergroup\pst@endoverlay}
- \def\pst@endoverlay{%
- \pst@Verb{\curr@overlay\space \tx@BOL }}
--\fi
- 
- % Cumulative overlays
- % ===================
- 
- % Cumulative overlays, to force to print all preceding ones
- \def\SeminarCumulativeOverlays{%
--\iffalse
- \def\pst@initoverlay##1{%
- \pst@Verb{
- /BeginOL {
-@@ -529,19 +526,16 @@
-   ifelse} def
- \tx@InitOL end 
- /TheOL ##1 def}}%
--\fi
- }
- 
- % Alternative method for same goal (needed when PSTricks nodes are used)
- \def\SeminarAltCumulativeOverlays{%
--\iffalse
- \def\pst@initoverlay##1{%
- \pst@Verb{
- \tx@InitOL end 
- /Visible {initclip} def
- /Invisible {CP newpath OLUnit itransform moveto clip newpath moveto} def
- /TheOL ##1 def}}
--\fi
- }
- 
- % Progressive overlays
-@@ -586,7 +580,7 @@
- % Generation of the next overlay (minor add-on)
- % =============================================
- % (it increment automatically the number of the current overlay)
--\newcommand{\SeminarNextOverlay}[1]{%
-+\providecommand{\SeminarNextOverlay}[1]{%
- \addtocounter{overlay}{1}%
- \begin{overlay}{\the\c@overlay}#1\end{overlay}}
- 
---- texmf-dist/tex/latex/seminar/seminar.bg3
-+++ texmf-dist/tex/latex/seminar/seminar.bg3	2020-06-07 08:26:07.000000000 +0000
-@@ -0,0 +1,608 @@
-+%%%%%%%%%%%%%%%%%%%%%%%%%%% -*- Mode: Latex -*- %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-+%% seminar.bg3 --- Corrections for compatibility problems and new bugs
-+%%                 found in the Seminar package, and few new additions
-+%%                 to help overlays management for PDF output files.
-+%%                 (see also the seminar.bug file in Seminar distribution)
-+%%
-+%%                 Disclaimer: this file is mine and doesn't engage TVZ!
-+%%
-+%% Note: insert it after \usepackage{graphicx} if you use `graphicx'
-+%%       and after \usepackage{longtable} if you use `longtable'
-+%%
-+%% Author          : Denis GIROU (CNRS/IDRIS - France) <Denis.Girou@idris.fr>
-+%% Created the     : 1995
-+%% Last mod. by    : Patrice MEGRET (FPMs - Belgium) <patrice.megret@fpms.ac.be>
-+%% Last mod. the   : Sunday February 29 2004
-+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-+
-+\def\FileVersion{2.3}
-+\def\FileDate{2014/05/12}
-+\typeout{seminar.bg3: various corrections for the Seminar document class^^J%
-+         added since seminar.bug and few add-ons for overlays^^J%
-+         (Version \FileVersion\space of <\FileDate> (P.M.))}
-+
-+\edef\TheAtCode{\the\catcode`\@}
-+\catcode`\@=11
-+
-+% PM modification begin PM December 6, 2003
-+% ce nouveau test permet de choisir entre un footer
-+% verticalement centré \footervcenter = true (default)
-+% ou non \footervcenter = false
-+\newif\iffootervcenter \footervcentertrue
-+% PM modification end December 6, 2003
-+
-+
-+% 1 - To correct a bug in the note environment
-+%     (reported by Denis Girou (CNRS/IDRIS) <Denis.Girou@idris.fr> - 1995)
-+\@savsf=1
-+
-+
-+% 2 - To correct several bugs to generate a list of slides with subsection
-+%     entries
-+%     (reported by Denis Girou (CNRS/IDRIS) <Denis.Girou@idris.fr> - Jul. 18, 1995)
-+%   - To clear the subheading when a new heading is defined
-+%     (reported by Axel Thimm - <thimm@physik.fu-berlin.de> - June 5, 1997)
-+%   - To assure coherence between heading and subheading when used
-+%     in header/footer, for article mode
-+%     (reported by Axel Thimm - <thimm@physik.fu-berlin.de> - June 5, 1997)
-+%   - Improvements (\refstepcounter and \@addtoreset) by Jeremy Gibbons
-+%     <jgibbons@brookes.ac.uk> - Sep. 30, 1997
-+
-+% Used by the \slide@subheading macro but undefined
-+\def\theslidesubsection{\theslidesection.\arabic{slidesubsection}}
-+
-+\def\slide@heading[#1]#2{%
-+  \refstepcounter{slidesection}%
-+  \@addtoreset{slidesubsection}{slidesection}
-+  \addtocontents{los}{\protect\l@slide
-+    {\the\c@slidesection}{\ignorespaces#1}{\@SCTR}}%
-+  \def\@tempa{#2}%
-+  \ifx\@tempa\@empty\else
-+    {\edef\@currentlabel{\csname p@slidesection\endcsname\theslidesection}%
-+      \makeslideheading{#2}}%
-+  \fi
-+  \gdef\theslideheading{#1}%
-+  \gdef\theslidesubheading{}%
-+}
-+
-+\def\slide@subheading[#1]#2{%
-+  \refstepcounter{slidesubsection}%
-+  \addtocontents{los}{\protect\l@subslide
-+    {\the\c@slidesubsection}{\ignorespaces#1}{\@SCTR}}%
-+  \def\@tempa{#2}%
-+  \ifx\@tempa\@empty\else
-+    {\edef\@currentlabel{\csname p@slidesubsection\endcsname
-+      \theslidesubsection}\makeslidesubheading{#2}}%
-+  \fi
-+  \gdef\theslidesubheading{#1}%
-+}
-+
-+
-+% 3 - To correct a bug in the \slidecontents macro
-+%     (reported by Denis Roegel (LORIA) <Denis.Roegel@loria.fr> - Sep. 22, 1996)
-+
-+\long\def\@gobblethree #1#2#3{}
-+
-+\def\slide@contents{%
-+  \def\l@slide##1##2##3{%
-+    \slide@cline{\slidenumberline{##1}{##2}}{##3}}%
-+  \let\l@subslide\@gobblethree
-+  \@startlos}
-+
-+
-+% 4 - To solve incompatibility between the `graphicx' package and Seminar.
-+%     The \espfslidesize Seminar macro work only with the old version of
-+%     the `epsfig' package, so with \includegraphics the PostScript files are
-+%     always scaled without the possibility to leave them to there natural
-+%     size. And also these files are not correctly scaled when we switch
-+%     from normal to article mode under Seminar. So, we must redefined the
-+%     \epsfslidesize macro of Seminar and modify few internal macros of
-+%     `graphicx'.
-+%     (Note: I consider only the `graphicX' package, not the 'graphicS' one)
-+%     (reported by Karl Tombre  (LORIA) <Karl.Tombre@loria.fr> and
-+%                  Denis Roegel (LORIA) <Denis.Roegel@loria.fr> - Jan. 16, 1997)
-+
-+\def\GraphicsNotScaled{%
-+\ifx\Gin@viewport\undefined
-+\else                           % Graphicx package detected
-+\def\Gin@i{%
-+ \def\Gin@req@sizes{%
-+   \Gin@nat@height=\inverseslidesmag\Gin@nat@height
-+   \Gin@nat@width=\inverseslidesmag\Gin@nat@width
-+   \Gin@req@height\Gin@nat@height
-+   \Gin@req@width\Gin@nat@width}%
-+ \@ifnextchar[\Gin@ii{\Gin@ii[]}}
-+\define@key{Gin}{width}{%
-+\@tempdima=##1\@tempdima=\inverseslidesmag\@tempdima\def\Gin@ewidth{\@tempdima}}
-+\define@key{Gin}{height}{%
-+\@tempdima=##1\@tempdima=\inverseslidesmag\@tempdima\def\Gin@eheight{\@tempdima}}
-+\define@key{Gin}{totalheight}{%
-+\def\Gin@eresize{\totalheight}%
-+\@tempdima=##1\@tempdima=\inverseslidesmag\@tempdima\def\Gin@eheight{\@tempdima}}
-+\fi}
-+
-+\def\epsfslidesize{%
-+\let\epsfsize\slide@epsfsize
-+\GraphicsNotScaled}
-+
-+
-+% 5 - To solve incompatibily between the LongTable package and Seminar
-+%     (reported by Bhaskar Manda (UIUC) <bhaskar@or4.me.uiuc.edu> - May 7, 1997)
-+%   - Problem in article format seen later
-+%     (reported by Axel Thimm <thimm@physik.fu-berlin.de> - June 5, 1997)
-+
-+% From seminar.cls
-+\def\slide@outputLT{% (from \slide@output)
-+  \@makeslide
-+  \@testfalse
-+  \ifnotesonly\else
-+    \iflandscape
-+      \ifnum\@landscapeonly>-1 \os@test\fi
-+    \else
-+      \ifnum\@landscapeonly<1 \os@test\fi
-+    \fi
-+  \fi
-+  \if@test
-+    \reset@slideoutput
-+    \@@makeslideLT
-+    \process@slide
-+  \fi
-+  \refstepcounter{slide}}
-+\def\@@makeslideLT{% (from \@@makeslide)
-+  \overfullslide@warning
-+  \setbox\@slidebox\hbox{%
-+    \vfuzz=\slidefuzz\relax
-+    \vbox to\slide@vsize{%
-+    \box\@outputbox
-+    \ifcenterslides\vskip\z@ plus .0001fil \fi
-+    \unvbox\@slidebox
-+    \vskip\z@ plus .0001fil}%
-+    \the\after@slidepage}%
-+  \wd\@slidebox\textwidth}
-+
-+% From LongTable
-+\def\LT@output{%
-+  \ifnum\outputpenalty <-\@Mi
-+    \ifnum\outputpenalty > -\LT@end@pen
-+      \LT@err{floats and marginpars not allowed in a longtable}\@ehc
-+    \else
-+      \setbox\z@\vbox{\unvbox\@cclv}%
-+      \ifdim \ht\LT@lastfoot>\ht\LT@foot
-+        \dimen@\pagegoal
-+        \advance\dimen@-\ht\LT@lastfoot
-+        \ifdim\dimen@<\ht\z@
-+          \setbox\@cclv\vbox{\unvbox\z@\copy\LT@foot\vss}%
-+          \@makecol
-+          \slide@outputLT
-+          \setbox\z@\vbox{\box\LT@head}%
-+        \fi
-+      \fi
-+      \global\@colroom\@colht
-+      \global\vsize\@colht
-+      \vbox
-+        {\unvbox\z@\box\ifvoid\LT@lastfoot\LT@foot\else\LT@lastfoot\fi}%
-+    \fi
-+  \else
-+    \setbox\@cclv\vbox{\unvbox\@cclv\copy\LT@foot\vss}%
-+    \@makecol
-+    \slide@outputLT
-+    \copy\LT@head
-+  \fi}
-+
-+% We must adjust \textheight. Sometimes, you must increase it a little by
-+% something like \addtolength{\textheight}{5mm}
-+% But if you use slides like \begin{slide*}[15cm,10cm]
-+% you must define locally \textheight=15cm
-+\addtolength{\textheight}{-\headheight}
-+
-+
-+% 6 - To allow automatic changes of language dependent labels,
-+%     for instance by loading the `french' package after Seminar
-+%     (suggested by Bernard Gaulle (IDRIS) <gaulle@idris.fr> - Nov. 20, 1997)
-+% From seminar.cls
-+\def\slidename{Slide}
-+\def\slidelabel{\bf\slidename{} \theslide}
-+% From slidesec.sty
-+\def\listslidename{List of Slides}%
-+\def\listofslides{\section*{\listslidename%
-+\@mkboth{\expandafter\MakeUppercase\listslidename}%
-+        {\expandafter\MakeUppercase\listslidename}}%
-+  \def\l@slide##1##2##3{%
-+    \slide@undottedcline{\slidenumberline{##3}{##2}}{}}%
-+  \let\l@subslide\l@slide
-+  \@startlos}
-+
-+
-+% 7 - There were several problems when doing a global change of color
-+%     outside the "slide"environment (using the \color{ColorName} macro
-+%     of the `color' package) if this change was not done globally
-+%     (that is to say before the "\begin{document}") but inside the document,
-+%     for a part of the slides.
-+%     These problems can be seen specially for screen presentations,
-+%     when we want to use a dark background, so a light foreground color
-+%     for the text.
-+%     First, the header (defining for instance with the `fancyhdr' package)
-+%     changed of color one slide later and was restored one slide later too
-+%     if the change of the color was mas inside a group for some slides,
-+%     and second, the black color was forced by the footer.
-+%     We solve the first problem by usage of the same technique than the one
-+%     used by Seminar for global changes based on \special macros and made
-+%     before the "\begin{document}". We save the \specials in the
-+%     \saved@specials box and insert it at the beginning of the \@slidebox box
-+%     with the \insert@specials macro, as for the first slide.
-+%     And we solve the second problem by suppression of the command in the
-+%     hook which force the black color (defined in the `semcolor' package).
-+%     (reported by Denis Girou (CNRS/IDRIS) <Denis.Girou@idris.fr> - 1999-2002)
-+
-+% Built from \save@srlidespecials (for all slides excepted the first one)
-+\def\save@slidespecials@ii{%
-+  \begingroup
-+    \output{%
-+      \global\setbox\saved@specials=\box\@cclv
-+      \global\wd\saved@specials=\z@
-+      \global\dp\saved@specials=\z@
-+      \global\ht\saved@specials=\z@}%
-+    \hbox{}\penalty-\@M
-+  \endgroup}%
-+
-+% The first slide is already managed, so we will define \save@slidespecials@i
-+% started to the second one only...
-+\def\save@slidespecials@i{}%
-+
-+\ifarticle\else
-+  \def\insert@specials{%
-+    \ifvoid\saved@specials\else
-+      \setbox\@slidebox\hbox{\box\saved@specials\box\@slidebox}%
-+    \fi
-+    \global\let\save@slidespecials@i\save@slidespecials@ii}
-+\fi
-+
-+\addto@hook{\before@newslide}{\save@slidespecials@i}
-+
-+\after@slidepage={}
-+
-+
-+% 7 - To vertically correctly center the footer, if defined
-+%     (this is mainly visible when using the `fancyhdr' package, and specially
-+%     when a footer rule line is defined)
-+%     (reported by Denis Girou (CNRS/IDRIS) - <Denis.Girou@idris.fr> - April 1998)
-+
-+% 8 - Add-on to allow "full screen" backgrounds.
-+%     Seminar originally support only partial backgrounds, which doesn't cover
-+%     the full page but only the place of the text. It cannot be easily
-+%     modified, as there are dependancies between the header and the text.
-+%     So, we choose to define new macros \SeminarNewSlideFrameBackground
-+%     and \SeminarSlideFrameBackground to manage the full screen backgrounds,
-+%     designed on the model of the \newslideframe and \slideframe ones.
-+%     (added by Denis Girou (CNRS/IDRIS) <Denis.Girou@idris.fr> - Jun. 30, 1999)
-+
-+\newbox\Seminar@SlideBoxBackground
-+\ifarticle
-+\else
-+  \def\output@slide{%
-+    \begingroup
-+      \hoffset=-\inverseslidesmag in
-+      \voffset=-\inverseslidesmag in
-+      \setslidelength\@tempdima{%
-+        \ifportrait\paperwidth\else\paperheight\fi}%
-+      \setslidelength\@tempdimb{%
-+        \ifportrait\paperheight\else\paperwidth\fi}%
-+      \ifrotateheaders
-+        \@ifrotateslide{%
-+          \dimen@=\@tempdima
-+          \@tempdima=\@tempdimb
-+          \@tempdimb=\dimen@}
-+      \fi
-+      % \oddsidemargin, \evensidemargin, \headheight, \footheight
-+      % used for scratch:
-+      % Some page styles like to know \textwidth:
-+      \setslidelength\headheight\slidetopmargin
-+      \setslidelength\footheight\slidebottommargin
-+      \ifautoslidemargins
-+        \textwidth=\wd\@slidebox
-+        \oddsidemargin=\@tempdima
-+        \advance\oddsidemargin-\textwidth
-+        \divide\oddsidemargin 2
-+      \else
-+        \setslidelength\oddsidemargin\slideleftmargin
-+        \setslidelength\evensidemargin\sliderightmargin
-+        \textwidth=\@tempdima
-+        \advance\textwidth-\oddsidemargin
-+        \advance\textwidth-\evensidemargin
-+      \fi
-+      \setbox\@slidebox=\hbox to \@tempdima{%
-+        \box\Seminar@SlideBoxBackground
-+        \kern\oddsidemargin
-+        \vbox to\@tempdimb{%
-+          \ifnum\fancyput@flag>-1
-+            \hbox{\kern-\oddsidemargin\do@fancyput}%
-+          \fi
-+          \let\label\@gobble
-+          \let\index\@gobble
-+          \let\glossary\@gobble
-+          \vbox to\headheight{%
-+            \vfill
-+            \hbox{%
-+              \slideheadfont\relax\strut
-+              \hbox to\textwidth{\@oddhead}}%
-+            \kern\z@}%
-+          \vfill
-+          \hbox to\textwidth{\hss\box\@slidebox\hss}%
-+          \vfill
-+          \vbox to\footheight{%
-+	  \iffootervcenter
-+            \vfill
-+	  \fi
-+            \hbox{%
-+              \slidefootfont\relax\strut
-+              \hbox to\textwidth{\@oddfoot}}%
-+            \vfill}}%
-+        \hss}%
-+      \ifrotateheaders\@ifrotateslide\rotate@slide\fi
-+      \insert@specials
-+      \let\protect\noexpand
-+      \shipout\box\@slidebox
-+    \endgroup
-+    \let\firstmark\botmark}
-+  \@ifundefined{fancyput@flag}{\def\fancyput@flag{-1}}{}
-+\fi
-+
-+
-+\def\finish@slide{%
-+  \theSlideFrameBackground
-+  \theslideframe
-+  \add@slidelabel\slidelabel}
-+
-+
-+\def\SeminarNewSlideFrameBackground#1{%
-+  \@ifnextchar[{\@SeminarNewSlideFrameBackground{#1}}%
-+               {\@SeminarNewSlideFrameBackground{#1}[]}}
-+\def\@SeminarNewSlideFrameBackground#1[#2]{%
-+  \@namedef{semsfbops@#1}{#2}%
-+  \@namedef{semsfb@#1}##1}
-+
-+\def\SeminarSlideFrameBackground{\Seminar@SlideFrameBackground{Slide}}
-+\def\Seminar@SlideFrameBackground#1{%
-+  \@ifstar{\@testtrue\Seminar@@SlideFrameBackground{#1}}%
-+          {\@testfalse\Seminar@@SlideFrameBackground{#1}}}
-+\def\Seminar@@SlideFrameBackground#1{%
-+  \@ifnextchar[{\Seminar@@@SlideFrameBackground{#1}}%
-+               {\Seminar@@@SlideFrameBackground{#1}[]}}
-+\def\Seminar@@@SlideFrameBackground#1[#2]#3{%
-+  \def\@tempa{none}%
-+  \def\@tempb{#3}%
-+  \ifx\@tempa\@tempb
-+    \@namedef{the#1FrameBackground}{\relax}%
-+  \else
-+    \ifx\@tempb\@empty
-+      \@namedef{the#1FrameBackground}{}%
-+    \else
-+      \@ifundefined{semsfb@#3}%
-+        {\@seminarerr{Background slide frame `#3' undefined}\@eha}%
-+        {\if@test
-+          \Seminar@@@@SlideFrameBackground{#1}[#2]{#3}%
-+        \else
-+          \@namedef{the#1FrameBackground}{%
-+            \setbox\Seminar@SlideBoxBackground=\hbox{{%
-+              \@nameuse{semsfbops@#3}#2%
-+                \@nameuse{semsfb@#3}{\box\Seminar@SlideBoxBackground}}}}%
-+        \fi}%
-+     \fi
-+   \fi}
-+\def\Seminar@@@@SlideFrameBackground#1[#2]#3{%
-+  \expandafter\let\expandafter\@tempa\csname the#1FrameBackground\endcsname
-+  \edef\next{%
-+    \noexpand\def\expandafter\noexpand\csname the#1FrameBackground\endcsname}%
-+  \expandafter\next\expandafter{\@tempa
-+    \setbox\Seminar@SlideBoxBackground=\hbox{{%
-+      \@nameuse{semsfbops@#3}%
-+      #2%
-+      \@nameuse{semsfb@#3}{\box\Seminar@SlideBoxBackground}}}}}%
-+
-+\SeminarSlideFrameBackground{none}
-+
-+
-+% 9 - For screen presentations, and specially animated graphics,
-+%     we need more than 10 overlays. We increase the limit to 676 (26^2).
-+%     (added by Denis Girou (CNRS/IDRIS) <Denis.Girou@idris.fr> - Dec.  5, 2001)
-+
-+\def\overlay#1{%
-+  \ifoverlays\ifx\@overlay\relax\nooverlays@err\fi\fi
-+  \ifslide
-+    \@tempcnta=#1
-+    \@testfalse
-+    \ifnum\@tempcnta>-2 \ifnum\@tempcnta<677 \@testtrue\fi\fi
-+    \if@test
-+      \c@overlay=\@tempcnta
-+      \ifnum\c@overlay=0
-+        \advance\c@slide by -1
-+        \refstepcounter{slide}%
-+      \else
-+        \advance\c@overlay by -1
-+        \refstepcounter{overlay}%
-+        \ifoverlays
-+          \xdef\overlay@list{\overlay@list,\the\c@overlay}%
-+        \fi
-+      \fi
-+      \ifoverlays
-+        \@overlay{\the\c@overlay}%
-+      \fi
-+    \else
-+      \@seminarerr{\string\overlay\space argument must be
-+        an integer between 0 and 676}\@eha
-+    \fi
-+  \else
-+    \@seminarerr{\string\overlay\space can only be used
-+      in slide environments}\@eha
-+  \fi
-+  \ignorespaces}
-+
-+\def\overlay@loop{%
-+  \begingroup
-+    \overlay@prep
-+    \c@overlay=1
-+    \@whilenum\c@overlay<677
-+      \do{%
-+        \test@member{\the\c@overlay}{\overlay@list}%
-+        \if@test
-+          \make@overlay{\the\c@overlay}%
-+          \finish@slide
-+          \output@slide
-+        \fi
-+        \layer@loop{\the\c@overlay}%
-+        \advance\c@overlay by 1}%
-+  \endgroup}
-+
-+\def\theoverlay{{%
-+\ifnum\c@overlay>26
-+  \@tempcnta=\c@overlay
-+  \advance\@tempcnta\m@ne
-+  \divide\@tempcnta by 26
-+  \multiply\@tempcnta by 26
-+  \@tempcntb=\c@overlay
-+  \advance\@tempcntb-\@tempcnta
-+  \@tempcnta=\c@overlay
-+  \advance\@tempcnta\m@ne
-+  \divide\@tempcnta by 26
-+  \theslide-\@alph{\@tempcnta}\@alph{\@tempcntb}%
-+\else
-+  \theslide-\alph{overlay}%
-+\fi}}
-+
-+
-+% 10 - Addition for management of cumulative and progressive overlays.
-+%      Due to PSTricks, Seminar had since the beginning the required
-+%      capabilities to manage overlays in various ways. The only thing
-+%      to do is to redefine the PSTricks \pst@initoverlay macro in the
-+%      relevant way.
-+%      (added by Denis Girou (CNRS/IDRIS) <Denis.Girou@idris.fr> - 1999-2001)
-+
-+% From `semcolor'
-+\def\make@overlay#1{%
-+  \setbox\@slidebox=\hbox{%
-+    \pst@initoverlay{#1}%
-+    \pst@Verb{0 \tx@BOL }%
-+    \copy\@@slidebox
-+    \pst@Verb{-1 \tx@BOL }}}
-+
-+\iffalse
-+% We must redefine too the /BeginOL macro form pstricks.pro, as "all" is now -1
-+\def\pst@initoverlay#1{%
-+\pst@Verb{%
-+/BeginOL {%
-+  dup -1 eq exch TheOL eq or
-+    {IfVisible not
-+      {Visible /IfVisible true def}
-+     if}
-+    {IfVisible
-+      {Invisible /IfVisible false def}
-+     if}
-+  ifelse} def
-+\tx@InitOL end
-+/TheOL #1 def}}
-+
-+\def\pst@overlay#1{%
-+\edef\curr@overlay{#1}%
-+\pst@Verb{#1 \tx@BOL }%
-+\aftergroup\pst@endoverlay}
-+\def\pst@endoverlay{%
-+\pst@Verb{\curr@overlay\space \tx@BOL }}
-+\fi
-+
-+% Cumulative overlays
-+% ===================
-+
-+% Cumulative overlays, to force to print all preceding ones
-+\def\SeminarCumulativeOverlays{%
-+\def\pst@initoverlay##1{%
-+\pst@Verb{%
-+/BeginOL {%
-+  dup -1 eq exch TheOL le or
-+    {IfVisible not
-+      {Visible /IfVisible true def}
-+     if}
-+    {IfVisible
-+      {Invisible /IfVisible false def}
-+     if}
-+  ifelse} def
-+\tx@InitOL end 
-+/TheOL ##1 def}}}
-+
-+% Alternative method for same goal (needed when PSTricks nodes are used)
-+\def\SeminarAltCumulativeOverlays{%
-+\def\pst@initoverlay##1{%
-+\pst@Verb{%
-+/BeginOL {%
-+  dup -1 eq exch TheOL le or
-+    {IfVisible not
-+      {Visible /IfVisible true def}
-+     if}
-+    {IfVisible
-+      {Invisible /IfVisible false def}
-+     if}
-+  ifelse} def
-+\tx@InitOL end
-+/Visible {initclip} def
-+/Invisible {CP newpath OLUnit itransform moveto clip newpath moveto} def
-+/TheOL ##1 def}}}
-+
-+% Progressive overlays
-+% ====================
-+
-+% Progressive overlays (at step i, only overlays 0 and i are shown)
-+\def\SeminarProgressiveOverlays{%
-+\def\pst@initoverlay##1{%
-+\pst@Verb{%
-+/BeginOL {%
-+  /NumOL ED
-+  NumOL -1 eq NumOL 0 eq NumOL TheOL eq or or
-+    {IfVisible not
-+      {Visible /IfVisible true def}
-+     if}
-+    {IfVisible
-+      {Invisible /IfVisible false def}
-+     if}
-+  ifelse} def
-+\tx@InitOL end
-+/TheOL ##1 def}}}
-+
-+% Alternative method for the same goal (needed when PSTricks nodes are used)
-+\def\SeminarAltProgressiveOverlays{%
-+\def\pst@initoverlay##1{%
-+\pst@Verb{%
-+/BeginOL {%
-+  /NumOL ED
-+  NumOL -1 eq NumOL 0 eq NumOL TheOL eq or or
-+    {IfVisible not
-+      {Visible /IfVisible true def}
-+     if}
-+    {IfVisible
-+      {Invisible /IfVisible false def}
-+     if}
-+  ifelse} def
-+\tx@InitOL end 
-+/Visible {initclip} def
-+/Invisible {CP newpath OLUnit itransform moveto clip newpath moveto} def
-+/TheOL ##1 def}}}
-+
-+% Generation of the next overlay (minor add-on)
-+% =============================================
-+% (it increment automatically the number of the current overlay)
-+\providecommand{\SeminarNextOverlay}[1]{%
-+\addtocounter{overlay}{1}%
-+\begin{overlay}{\the\c@overlay}#1\end{overlay}}
-+
-+% To force all items in the various list environments to appear
-+% in their own overlay (minor add-on)
-+% ==================================
-+\let\itemORIG\item
-+
-+\def\SeminarItemInOverlay{%
-+\def\item{%
-+\addtocounter{overlay}{1}%
-+\overlay{\the\c@overlay}%
-+\itemORIG}}
-+
-+\catcode`\@=\TheAtCode\relax
-+\endinput
-+%% END seminar.bg3
---- texmf-dist/tex/latex/seminar/seminar.cls
-+++ texmf-dist/tex/latex/seminar/seminar.cls	2021-06-30 08:44:26.000000000 +0000
-@@ -5,12 +5,12 @@
- %% Fixes from David Carlisle, Denis Girou, 
- %% and Frank Küster/Günter Milde (a4paper option fix)
- %%
--\def\fileversion{1.61}
--\def\filedate{2014/01/17}
-+\def\fileversion{1.63}
-+\def\filedate{2021/06/30}
- %%
- %% This is a style for typesetting notes and slides.
- %%
--%% COPYRIGHT 1993, by Timothy Van Zandt, Timothy.VAN-ZANDT@insead.edu
-+%% COPYRIGHT 1993--, by Timothy Van Zandt, Timothy.VAN-ZANDT@insead.edu
- %%
- %% This file may be distributed and/or modified under the conditions of
- %% the LaTeX Project Public License, either version 1.2 of this license
-@@ -117,7 +117,8 @@
- \newtoks\before@document
- \newtoks\after@document
- \let\xcomment@hook\relax
--\before@document{\endgroup\the\before@document\begingroup}
-+\before@document{\the\before@document}
-+%\before@document{\endgroup\the\before@document\begingroup}
- \after@document{\the\after@document\xcomment@hook}
- \expandafter\@temptokena\expandafter{\document}
- \edef\document{\the\before@document\the\@temptokena\the\after@document}
---- texmf-dist/tex/latex/seminar/seminar.sty
-+++ texmf-dist/tex/latex/seminar/seminar.sty	2021-06-30 08:46:09.000000000 +0000
-@@ -1,20 +1,15 @@
- %% BEGIN seminar.sty
- %%
--%% This is file `seminar.sty', generated
--%% on <1993/4/2> with the docstrip utility (2.0r).
-+%% This is file `seminar.sty'
- %%
--%% The original source files were:
--%%
--%% seminar.doc
--%%
--\def\fileversion{1.62}
--\def\filedate{14/05/12}
-+\def\fileversion{1.71}
-+\def\filedate{24/06/30}
- %%
- %% LaTeX document style `seminar', for use with LaTeX v2.09.
- %% This is a style for typesetting notes and slides.
- %%
- %% COPYRIGHT 1993, by Timothy Van Zandt, Timothy.VAN-ZANDT@insead.edu
--%%
-+%%           2021, by Herbert Voß
- %%
- %% This file may be distributed and/or modified under the conditions of
- %% the LaTeX Project Public License, either version 1.2 of this license
-@@ -30,6 +25,7 @@
- \@ifundefined{@seminarerr}{}{\endinput}
- \typeout{%
-   Document Style: `seminar' v\fileversion \space <\filedate> (tvz)}
-+\providecommand\theHslide{\arabic{slide}}%
- \def\test@member#1#2{%
-   \edef\@tempg{,#2,#1,}%
-   \edef\@temph{####1,#1,}%
-@@ -82,7 +78,8 @@
- \newtoks\before@document
- \newtoks\after@document
- \let\xcomment@hook\relax
--\before@document{\endgroup\the\before@document\begingroup}
-+%\before@document{\endgroup\the\before@document\begingroup}
-+\before@document{\the\before@document}
- \after@document{\the\after@document\xcomment@hook}
- \expandafter\@temptokena\expandafter{\document}
- \edef\document{\the\before@document\the\@temptokena\the\after@document}
diff --git a/startlatex2e.doc.tar.xz b/startlatex2e.doc.tar.xz
deleted file mode 100644
index e3652f8..0000000
--- a/startlatex2e.doc.tar.xz
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:89639b2fbe649f7cc5979805102d640b7c23a92c6b0882374e4cd87475c12313
-size 243844
diff --git a/unitipa.doc.tar.xz b/unitipa.doc.tar.xz
deleted file mode 100644
index 3990380..0000000
--- a/unitipa.doc.tar.xz
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
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diff --git a/unitipa.tar.xz b/unitipa.tar.xz
deleted file mode 100644
index df6c42d..0000000
--- a/unitipa.tar.xz
+++ /dev/null
@@ -1,3 +0,0 @@
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