beamertheme-trigon (26mar21)

git-svn-id: svn://tug.org/texlive/trunk@59004 c570f23f-e606-0410-a88d-b1316a301751

7 files changed, 1977 insertions, 0 deletions

diff --git a/Master/texmf-dist/source/latex/beamertheme-trigon/beamercolorthemetrigon.dtx b/Master/texmf-dist/source/latex/beamertheme-trigon/beamercolorthemetrigon.dtx
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--- /dev/null
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@@ -0,0 +1,186 @@
+% \iffalse meta-comment -------------------------------------------------------
+% Copyright (C) 2021 Thomas Lambert <trigon@thl.ovh>
+% Other contributors to this theme are listed here:
+%     https://gitlab.com/thlamb/beamertheme-trigon/-/graphs/master
+%
+% The original template was heavily inspired by Metropolis from Matthias
+% Vogelgesang.
+%
+% License CC-BY-SA 4.0
+% This work is licensed under a Creative Commons Attribution-ShareAlike 4.0
+% International License (https://creativecommons.org/licenses/by-sa/4.0/)
+% ------------------------------------------------------------------------- \fi
+% \iffalse
+%<*package>
+\NeedsTeXFormat{LaTeX2e}
+\ProvidesPackage{beamercolorthemetrigon}[2021/03/25 v0.5.0 Trigon color theme]
+%</package>
+% \fi
+% \CheckSum{0}
+% \StopEventually{}
+% \iffalse
+%<*package>
+% ------------------------------------------------------------------------- \fi
+%
+% \subsection{\themename color theme}
+%
+% A |beamer| color theme sets the colors used for the different elements of the
+% document.
+%
+% \subsubsection{Package dependencies}
+%    \begin{macrocode}
+\RequirePackage{pgfopts}
+%    \end{macrocode}
+%
+%
+%
+% \subsubsection{Options}
+%
+% \begin{macro}{headingcolor}
+%    Select the color to use for all headings (title, section, frame, etc.).
+%    \begin{macrocode}
+\def\headcol{black}
+\pgfkeys{
+  /trigon/color/headingcolor/.cd,
+    .is choice,
+    black/.code=\def\headcol{black},
+    theme/.code=\def\headcol{tPrim}
+}
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{textcolor}
+%    Select the color to use for all headings (title, section, frame, etc.).
+%    \begin{macrocode}
+\def\txtcol{black}
+\pgfkeys{
+  /trigon/color/textcolor/.cd,
+    .is choice,
+    black/.code=\def\txtcol{black},
+    theme/.code=\def\txtcol{tPrim!50!black}
+}
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{block}
+%    Optionally removes the light grey background to block environments like
+%    |theorem| and |example|.
+%    \begin{macrocode}
+\pgfkeys{
+  /trigon/color/block/.cd,
+    .is choice,
+    transparent/.code=\trigon@block@transparent,
+    fill/.code=\trigon@block@fill
+}
+%
+% \begin{macro}{\trigon@color@setdefaults}
+%    Sets default values for color theme options.
+%    \begin{macrocode}
+\newcommand{\trigon@color@setdefaults}{
+  \pgfkeys{/trigon/color/.cd,
+   block=fill,
+   headingcolor=black,
+   textcolor=black
+  }
+}
+%    \end{macrocode}
+% \end{macro}
+%
+% \subsubsection{Base colors}
+%
+%    \begin{macrocode}
+\definecolor{tPrim}{HTML}{00707F}   % Green-Blue
+\definecolor{tSec}{HTML}{5FA4B0}    % Green-Blue light
+\definecolor{tAccent}{HTML}{F07F3C} % Orange
+\definecolor{tGrey}{HTML}{E6E6E1}   % Grey-Beige
+%    \end{macrocode}
+%
+% \subsubsection{Derived elements}
+%
+% All the elements are set using the base colors defined here above.
+%    \begin{macrocode}
+\setbeamercolor{background canvas}{bg=white}
+\setbeamercolor{normal text}{fg=\txtcol, bg= }
+\setbeamercolor{alerted text}{fg=tAccent}
+\setbeamercolor{example text}{fg=tSec}
+
+\setbeamercolor{title}{fg=\headcol, bg= , parent=normal text}
+\setbeamercolor{titlelike}{use=title, parent=title}
+\setbeamercolor{author}{use=normal text, bg= , parent=normal text}
+\setbeamercolor{date}{use=normal text, bg= , parent=normal text}
+\setbeamercolor{institute}{use=normal text, parent=normal text}
+\setbeamercolor{structure}{use=normal text, fg=normal text.fg}
+
+\setbeamercolor{palette primary}{use=titlelike, parent=titlelike}
+\setbeamercolor{frametitle}{use=titlelike, parent=titlelike}
+%    \end{macrocode}
+%
+%
+% Block environments such as |theorem| and |example| have a |tGrey| background
+% color by default. The option |block=transparent| removes the background color.
+%    \begin{macrocode}
+\newcommand{\trigon@block@transparent}{
+  \setbeamercolor{block title}{%
+    use=normal text,
+    fg=normal text.fg,
+    bg=normal text.bg!96!fg
+  }
+  \setbeamercolor{block body}{
+    use={block title, normal text},
+    bg=block title.bg!35!normal text.bg
+  }
+}
+\newcommand{\trigon@block@fill}{
+  \setbeamercolor{block title}{%
+    use=normal text,
+    fg=normal text.fg,
+    bg=normal text.bg!80!fg
+  }
+  \setbeamercolor{block body}{
+    use={block title, normal text},
+    bg=block title.bg!50!normal text.bg
+  }
+}
+
+\setbeamercolor{block title alerted}{%
+  use={block title, alerted text},
+  bg=block title.bg,
+  fg=alerted text.fg
+}
+\setbeamercolor{block title example}{%
+  use={block title, example text},
+  bg=block title.bg,
+  fg=example text.fg
+}
+\setbeamercolor{block body alerted}{use=block body, parent=block body}
+\setbeamercolor{block body example}{use=block body, parent=block body}
+%    \end{macrocode}
+%
+% The color of other smaller elements is defined as follows
+%    \begin{macrocode}
+\setbeamercolor{footnote}{fg=normal text.fg!90}
+\setbeamercolor{footnote mark}{fg=.}
+\setbeamercolor{footline}{fg=normal text.fg!50, parent=normal text}
+\setbeamercolor{caption}{fg=black!60, parent=normal text}
+
+\setbeamercolor{itemize item}{fg=tPrim, parent=normal text}
+\setbeamercolor{itemize subitem}{use=itemize item, parent=itemize item}
+\setbeamercolor{itemize subsubitem}{use=itemize item, parent=itemize item}
+\setbeamercolor{enumerate item}{fg=tPrim, parent=normal text}
+\setbeamercolor{enumerate subitem}{use=enumerate item, parent=enumerate item}
+\setbeamercolor{enumerate subsubitem}{use=enumerate item, parent=enumerate item}
+\setbeamercolor{description item}{fg=tPrim, parent=normal text}
+%    \end{macrocode}
+%
+% \subsubsection{Process package options}
+%
+%    \begin{macrocode}
+\trigon@color@setdefaults
+\ProcessPgfPackageOptions{/trigon/color}
+%    \end{macrocode}
+%
+% \iffalse
+%</package>
+% \fi
+% \Finale
+\endinput
diff --git a/Master/texmf-dist/source/latex/beamertheme-trigon/beamerfontthemetrigon.dtx b/Master/texmf-dist/source/latex/beamertheme-trigon/beamerfontthemetrigon.dtx
new file mode 100644
index 00000000000..fcc9ed34a3f
--- /dev/null
+++ b/Master/texmf-dist/source/latex/beamertheme-trigon/beamerfontthemetrigon.dtx
@@ -0,0 +1,329 @@
+% \iffalse meta-comment -------------------------------------------------------
+% Copyright (C) 2021 Thomas Lambert <trigon@thl.ovh>
+% Other contributors to this theme are listed here:
+%     https://gitlab.com/thlamb/beamertheme-trigon/-/graphs/master
+%
+% The original template was heavily inspired by Metropolis from Matthias
+% Vogelgesang.
+%
+% License CC-BY-SA 4.0
+% This work is licensed under a Creative Commons Attribution-ShareAlike 4.0
+% International License (https://creativecommons.org/licenses/by-sa/4.0/)
+% ------------------------------------------------------------------------- \fi
+% \iffalse
+%<*package>
+\NeedsTeXFormat{LaTeX2e}
+\ProvidesPackage{beamerfontthemetrigon}[2021/03/25 v0.5.0 Trigon font theme]
+%</package>
+% \fi
+% \CheckSum{0}
+% \StopEventually{}
+% \iffalse
+%<*package>
+% ------------------------------------------------------------------------- \fi
+%
+% \subsection{\themename font theme}
+% A |beamer| font theme sets the style of the font used in the document.
+%
+%
+% \subsubsection{Package dependencies}
+%    \begin{macrocode}
+\RequirePackage{pgfopts}
+%    \end{macrocode}
+%
+%
+%
+% \subsubsection{Title format options}
+%
+% \begin{macro}{titleformat title}
+%    Controls the format of the title.
+%    \begin{macrocode}
+\pgfkeys{
+  /trigon/font/titleformat title/.cd,
+    .is choice,
+    regular/.code={%
+      \let\trigon@titleformat\@empty%
+      \setbeamerfont{title}{shape=\normalfont}%
+    },
+    smallcaps/.code={%
+      \let\trigon@titleformat\@empty%
+      \setbeamerfont{title}{shape=\scshape}%
+    },
+    allsmallcaps/.code={%
+      \let\trigon@titleformat\lowercase%
+      \setbeamerfont{title}{shape=\scshape}%
+      \PackageWarning{beamerthemetrigon}{%
+        Be aware that titleformat title=allsmallcaps can lead to problems%
+      }
+    },
+    allcaps/.code={%
+      \let\trigon@titleformat\uppercase%
+      \setbeamerfont{title}{shape=\normalfont}
+      \PackageWarning{beamerthemetrigon}{%
+        Be aware that titleformat title=allcaps can lead to problems%
+      }
+    },
+}
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{titleformat subtitle}
+%    Controls the format of the subtitle.
+%    \begin{macrocode}
+\pgfkeys{
+  /trigon/font/titleformat subtitle/.cd,
+    .is choice,
+    regular/.code={%
+      \let\trigon@subtitleformat\@empty%
+      \setbeamerfont{subtitle}{shape=\normalfont}%
+    },
+    smallcaps/.code={%
+      \let\trigon@subtitleformat\@empty%
+      \setbeamerfont{subtitle}{shape=\scshape}%
+    },
+    allsmallcaps/.code={%
+      \let\trigon@subtitleformat\lowercase%
+      \setbeamerfont{subtitle}{shape=\scshape}%
+      \PackageWarning{beamerthemetrigon}{%
+        Be aware that titleformat subtitle=allsmallcaps can lead to problems%
+      }
+    },
+    allcaps/.code={%
+      \let\trigon@subtitleformat\uppercase%
+      \setbeamerfont{subtitle}{shape=\normalfont}%
+      \PackageWarning{beamerthemetrigon}{%
+        Be aware that titleformat subtitle=allcaps can lead to problems%
+      }
+    },
+}
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{titleformat section}
+%    Controls the format of the section title.
+%    \begin{macrocode}
+\pgfkeys{
+  /trigon/font/titleformat section/.cd,
+    .is choice,
+    regular/.code={%
+      \let\trigon@sectiontitleformat\@empty%
+      \setbeamerfont{section title}{shape=\normalfont}%
+    },
+    smallcaps/.code={%
+      \let\trigon@sectiontitleformat\@empty%
+      \setbeamerfont{section title}{shape=\scshape}%
+    },
+    allsmallcaps/.code={%
+      \let\trigon@sectiontitleformat\MakeLowercase%
+      \setbeamerfont{section title}{shape=\scshape}%
+      \PackageWarning{beamerthemetrigon}{%
+        Be aware that titleformat section=allsmallcaps can lead to problems%
+      }
+    },
+    allcaps/.code={%
+      \let\trigon@sectiontitleformat\MakeUppercase%
+      \setbeamerfont{section title}{shape=\normalfont}%
+      \PackageWarning{beamerthemetrigon}{%
+        Be aware that titleformat section=allcaps can lead to problems%
+      }
+    },
+}
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{titleformat frame}
+%    Controls the format of the frame title.
+%    \begin{macrocode}
+\pgfkeys{
+  /trigon/font/titleformat frame/.cd,
+    .is choice,
+    regular/.code={%
+      \let\trigon@frametitleformat\@empty%
+      \setbeamerfont{frametitle}{shape=\normalfont}%
+    },
+    smallcaps/.code={%
+      \let\trigon@frametitleformat\@empty%
+      \setbeamerfont{frametitle}{shape=\scshape}%
+    },
+    allsmallcaps/.code={%
+      \let\trigon@frametitleformat\MakeLowercase%
+      \setbeamerfont{frametitle}{shape=\scshape}%
+      \PackageWarning{beamerthemetrigon}{%
+        Be aware that titleformat frame=allsmallcaps can lead to problems%
+      }
+    },
+    allcaps/.code={%
+      \let\trigon@frametitleformat\MakeUppercase%
+      \setbeamerfont{frametitle}{shape=\normalfont}
+      \PackageWarning{beamerthemetrigon}{%
+        Be aware that titleformat frame=allcaps can lead to problems%
+      }
+    },
+}
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{titleformat aliases}
+%    Allows |titleformat title| et al. to be used in the |\usetheme|
+%    declaration, where \LaTeX{} automatically removes all spaces.
+%    \begin{macrocode}
+\pgfkeys{
+  /trigon/font/.cd,
+  titleformattitle/.code=\pgfkeysalso{titleformat title=#1},
+  titleformatsubtitle/.code=\pgfkeysalso{titleformat subtitle=#1},
+  titleformatsection/.code=\pgfkeysalso{titleformat section=#1},
+  titleformatframe/.code=\pgfkeysalso{titleformat frame=#1},
+}
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\trigon@font@setdefaults}
+%    Sets default values for font theme options.
+%    \begin{macrocode}
+\newcommand{\trigon@font@setdefaults}{
+  \pgfkeys{/trigon/font/.cd,
+    titleformat title=regular,
+    titleformat subtitle=regular,
+    titleformat section=regular,
+    titleformat frame=regular,
+  }
+}
+%    \end{macrocode}
+% \end{macro}
+%
+% We first define hooks to change the case format of the titles.
+%
+%    \begin{macrocode}
+\def\trigon@titleformat#1{#1}
+\def\trigon@subtitleformat#1{#1}
+\def\trigon@sectiontitleformat#1{#1}
+\def\trigon@frametitleformat#1{#1}
+%    \end{macrocode}
+%
+% To make the uppercase and lowercase macros work in the title, subtitle, etc.,
+% we have to patch the appropriate |beamer| commands that set their values.
+% This solution was suggested by Enrico Gregorio in an answer to
+% \href{http://tex.stackexchange.com/questions/112526/}{this StackExchange
+% question}.
+%
+%    \begin{macrocode}
+\patchcmd{\beamer@title}%
+  {\def\inserttitle{#2}}%
+  {\def\inserttitle{\trigon@titleformat{#2}}}%
+  {}%
+  {\PackageError{beamerfontthemetrigon}{Patching title failed}\@ehc}
+\patchcmd{\beamer@subtitle}%
+  {\def\insertsubtitle{#2}}%
+  {\def\insertsubtitle{\trigon@subtitleformat{#2}}}%
+  {}%
+  {\PackageError{beamerfontthemetrigon}{Patching subtitle failed}\@ehc}
+\patchcmd{\sectionentry}
+  {\def\insertsectionhead{#2}}
+  {\def\insertsectionhead{\trigon@sectiontitleformat{#2}}}
+  {}
+  {\PackageError{beamerfontthemetrigon}{Patching section title failed}\@ehc}
+\@tempswafalse
+\patchcmd{\beamer@section}
+  {\edef\insertsectionhead{\noexpand\hyperlink{Navigation\the\c@page}{\unexpanded{#1}}}}
+  {\edef\insertsectionhead{\noexpand\hyperlink{Navigation\the\c@page}{%
+    \noexpand\trigon@sectiontitleformat{\unexpanded{#1}}}}}
+  {\@tempswatrue}
+  {}
+\patchcmd{\beamer@section}
+  {\def\insertsectionhead{\hyperlink{Navigation\the\c@page}{#1}}}
+  {\def\insertsectionhead{\hyperlink{Navigation\the\c@page}{%
+    \trigon@sectiontitleformat{#1}}}}
+  {\@tempswatrue}
+  {}
+\patchcmd{\beamer@section}
+  {\protected@edef\insertsectionhead{\noexpand\hyperlink{Navigation\the\c@page}{#1}}}
+  {\protected@edef\insertsectionhead{\noexpand\hyperlink{Navigation\the\c@page}{%
+    \noexpand\trigon@sectiontitleformat{#1}}}}
+  {\@tempswatrue}
+  {}
+\if@tempswa\else
+  \PackageError{beamerfontthemetrigon}{Patching section title failed}\@ehc
+\fi
+\@tempswafalse
+\patchcmd{\beamer@subsection}
+  {\edef\insertsubsectionhead{\noexpand\hyperlink{Navigation\the\c@page}{\unexpanded{#1}}}}
+  {\edef\insertsubsectionhead{\noexpand\hyperlink{Navigation\the\c@page}{%
+    \noexpand\trigon@sectiontitleformat{\unexpanded{#1}}}}}
+  {\@tempswatrue}
+  {}
+\patchcmd{\beamer@subsection}
+  {\def\insertsubsectionhead{\hyperlink{Navigation\the\c@page}{#1}}}
+  {\def\insertsubsectionhead{\hyperlink{Navigation\the\c@page}{%
+    \trigon@sectiontitleformat{#1}}}}
+  {\@tempswatrue}
+  {}
+\patchcmd{\beamer@subsection}
+  {\protected@edef\insertsubsectionhead{\noexpand\hyperlink{Navigation\the\c@page}{#1}}}
+  {\protected@edef\insertsubsectionhead{\noexpand\hyperlink{Navigation\the\c@page}{%
+    \noexpand\trigon@sectiontitleformat{#1}}}}
+  {\@tempswatrue}
+  {}
+\if@tempswa\else
+  \PackageError{beamerfontthemetrigon}{Patching section title failed}\@ehc
+\fi
+%    \end{macrocode}
+%
+% Similarly, to make the |\MakeLowercase| and |\MakeUppercase| macros work in
+% the frame title we have to patch |\beamer@@frametitle|.
+%
+%    \begin{macrocode}
+\patchcmd{\beamer@@frametitle}
+  {{%
+      \gdef\insertframetitle{{#2\ifnum\beamer@autobreakcount>0\relax{}\space%
+      \usebeamertemplate*{frametitle continuation}\fi}}%
+    \gdef\beamer@frametitle{#2}%
+    \gdef\beamer@shortframetitle{#1}%
+    }}
+  {{%
+      \gdef\insertframetitle{{\trigon@frametitleformat{#2}\ifnum%
+      \beamer@autobreakcount>0\relax{}\space%
+      \usebeamertemplate*{frametitle continuation}\fi}}%
+    \gdef\beamer@frametitle{#2}%
+    \gdef\beamer@shortframetitle{#1}%
+    }}
+  {}
+  {\PackageError{beamerfontthemetrigon}{Patching frame title failed}\@ehc}
+%    \end{macrocode}
+%
+%
+% \subsubsection{General font definitions}
+%
+%    \begin{macrocode}
+\setbeamerfont{author}       {size=\normalsize}
+\setbeamerfont{title}        {size=\LARGE,series=\bfseries}
+\setbeamerfont{section title}{size=\LARGE,series=\mdseries}
+\setbeamerfont{date}         {size=\small}
+\setbeamerfont*{subtitle}     {size=\Large}
+\setbeamerfont{frametitle}   {size=\LARGE}
+\setbeamerfont{framesubtitle}{size=\large}
+
+\setbeamerfont{alerted text} {size=\normalsize,series=\bfseries}
+\setbeamerfont{block title}{size=\normalsize,series=\bfseries}
+\setbeamerfont{block title alerted}{size=\normalsize,series=\bfseries}
+
+\setbeamerfont{section in toc}{size=\Large}
+\setbeamerfont{subsection in toc}{size=\large}
+\setbeamerfont{page number in head/foot}{size=\scriptsize}
+
+\setbeamerfont{description item}{series=\bfseries}
+\setbeamerfont{caption}{size=\small}
+\setbeamerfont{caption name}{series=\bfseries}
+%   \end{macrocode}
+%
+% \subsubsection{Process package options}
+%
+%    \begin{macrocode}
+\trigon@font@setdefaults
+\ProcessPgfPackageOptions{/trigon/font}
+%    \end{macrocode}
+%
+% \iffalse
+%</package>
+% \fi
+% \Finale
+\endinput
diff --git a/Master/texmf-dist/source/latex/beamertheme-trigon/beamerinnerthemetrigon.dtx b/Master/texmf-dist/source/latex/beamertheme-trigon/beamerinnerthemetrigon.dtx
new file mode 100644
index 00000000000..c234dfc3433
--- /dev/null
+++ b/Master/texmf-dist/source/latex/beamertheme-trigon/beamerinnerthemetrigon.dtx
@@ -0,0 +1,621 @@
+% \iffalse meta-comment -------------------------------------------------------
+% Copyright (C) 2021 Thomas Lambert <trigon@thl.ovh>
+% Other contributors to this theme are listed here:
+%     https://gitlab.com/thlamb/beamertheme-trigon/-/graphs/master
+%
+% The original template was heavily inspired by Metropolis from Matthias
+% Vogelgesang.
+%
+% License CC-BY-SA 4.0
+% This work is licensed under a Creative Commons Attribution-ShareAlike 4.0
+% International License (https://creativecommons.org/licenses/by-sa/4.0/)
+% ------------------------------------------------------------------------- \fi
+% \iffalse
+%<*package>
+\NeedsTeXFormat{LaTeX2e}
+\ProvidesPackage{beamerinnerthemetrigon}[2021/03/25 v0.5.0 Trigon inner theme]
+%</package>
+% \fi
+% \CheckSum{0}
+% \StopEventually{}
+% \iffalse
+%<*package>
+% ------------------------------------------------------------------------- \fi
+%
+% \subsection{\themename inner theme}
+%
+% A |beamer| inner theme dictates the style of the frame elements traditionally
+% set in the ``body'' of each slide. These include:
+%
+% \begin{itemize}
+%   \item title, part, and section pages;
+%   \item main background elements;
+%   \item itemize, enumerate, and description environments;
+%   \item block environments including theorems and proofs;
+%   \item figures and tables; and
+%   \item footnotes and plain text.
+% \end{itemize}
+%
+%
+% \subsubsection{Package dependencies}
+%
+%    \begin{macrocode}
+\RequirePackage{pgfopts}
+\RequirePackage{tikz}
+\usetikzlibrary{calc,3d}
+%    \end{macrocode}
+%
+%
+% \subsubsection{Definitions}
+% We define the command |\logobig| to specify the logo that needs to be applied
+% displayed on the title frame.
+%    \begin{macrocode}
+\def\logbig{}
+\newcommand\biglogo[1]{
+	\def\logbig{#1}
+}
+%    \end{macrocode}
+%
+%
+% \subsubsection{Options}
+%
+% \begin{macro}{sectionpage}
+%   Controls whereas a slide with the section title should be inserted at the
+%   beginning of the section or not.
+%    \begin{macrocode}
+\pgfkeys{
+	/trigon/inner/sectionpage/.cd,
+	.is choice,
+	none/.code=\trigon@disablesectionpage,
+	simple/.code=\trigon@enablesectionpage
+}
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{slidestyle}
+%   Controls the layout that should be used for regular slides.
+%    \begin{macrocode}
+\def\slidestyle{}
+\pgfkeys{
+	/trigon/inner/slidestyle/.cd,
+	.is choice,
+	blank/.code=\def\slidestyle{blank},
+	style1/.code=\def\slidestyle{smallcornertriangle},
+	cyber/.code=\def\slidestyle{cyberbottom}
+}
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{titlestyle}
+%   Controls the layout that should be used for the title page.
+%    \begin{macrocode}
+\def\titlestyle{}
+\pgfkeys{
+	/trigon/inner/titlestyle/.cd,
+	.is choice,
+	plain/.code=\def\titlestyle{bottomtrianglescolor},
+	style1/.code=\def\titlestyle{titlesmallimage},
+	style2/.code=\def\titlestyle{titlebigimage}
+}
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{sectionstyle}
+%   Controls the layout that should be used for the title page.
+%    \begin{macrocode}
+\def\sectionstyle{}
+\pgfkeys{
+	/trigon/inner/sectionstyle/.cd,
+	.is choice,
+	plain/.code=\def\sectionstyle{bottomtrianglescolor},
+	style1/.code=\def\sectionstyle{bigtriangles},
+	style2/.code=\def\sectionstyle{lefttriangles},
+	style3/.code=\def\sectionstyle{bottomtrianglesbw}
+}
+%    \end{macrocode}
+% \end{macro}
+%
+%
+% \begin{macro}{\trigon@inner@setdefaults}
+%   Sets default values for the inner theme options.
+%    \begin{macrocode}
+\newcommand{\trigon@inner@setdefaults}{
+	\pgfkeys{/trigon/inner/.cd,
+		sectionpage=simple,
+		slidestyle=blank,
+		titlestyle=style2,
+		sectionstyle=plain
+	}
+}
+%    \end{macrocode}
+% \end{macro}
+%
+%
+% \subsubsection{Backgrounds}
+%
+% First of all, we define a few commands in order easily create the triangles
+% used as the main design elements of the theme. All these are defined with
+% respect to the |\paperwidth| and |\paperheight| of the document, so that it
+% fits the different aspect ratio possible.
+%
+% \begin{macro}{\leftTriangle}
+%   Defines a triangle with the base on the left side (pointing right).
+%    \begin{macrocode}
+\newcommand{\leftTriangle}[2]{
+	(#1,#2)
+	-- (0,{#2 + tan(30)*#1} )
+	-- (0,{#2 - tan(30)*#1} )
+	-- cycle;
+}
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\righTriangle}
+%   Defines a triangle with the base on the right side (pointing left).
+%    \begin{macrocode}
+\newcommand{\rightTriangle}[2]{
+	(#1,#2)
+	-- (\the\paperwidth,{#2 + tan(30)*(\the\paperwidth-#1)} )
+	-- (\the\paperwidth,{#2 - tan(30)*(\the\paperwidth-#1)} )
+	-- cycle;
+}
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\topTriangle}
+%   Defines a triangle with the base on the bottom side (pointing top).
+%    \begin{macrocode}
+\newcommand{\topTriangle}[2]{
+	(#1,#2)
+	-- ({#1 - tan(60)*#2},0)
+	-- ({#1 + tan(60)*#2},0)
+	-- cycle;
+}
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\leftColorTriangle}
+%   Defines a colored triangle with the base on the left side (pointing right).
+%    \begin{macrocode}
+\newcommand{\leftColorTriangle}[3]{
+	\path[fill=#3]
+	\leftTriangle{#1}{#2}
+}
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\righColorTriangle}
+%   Defines a colored triangle with the base on the right side (pointing left).
+%    \begin{macrocode}
+\newcommand{\rightColorTriangle}[3]{
+	\path[fill=#3]
+	\rightTriangle{#1}{#2}
+}
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\topColorTriangle}
+%   Defines a colored triangle with the base on the bottom side (pointing top).
+%    \begin{macrocode}
+\newcommand{\topColorTriangle}[3]{
+	\path[fill=#3]
+	\topTriangle{#1}{#2}
+}
+%    \end{macrocode}
+% \end{macro}
+%
+%
+% We then define the different backgrounds choices.
+%
+% \begin{macro}{blank}
+%   Blank slide background.
+%    \begin{macrocode}
+\defbeamertemplate{background}{blank}{}
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{smallcornertriangle}
+%   Background with a small triangle in bottom left corner (used for normal
+%   frames when the appropriate option is selected).
+%    \begin{macrocode}
+\defbeamertemplate{background}{smallcornertriangle}{
+	\begin{tikzpicture}[blend group=multiply]
+		\useasboundingbox (0,0) rectangle(\the\paperwidth,\the\paperheight);
+		\leftColorTriangle{0.62\paperwidth}{0}{tGrey!30}
+	\end{tikzpicture}
+}
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{cyberbottom}
+%   Background with "mesh" effect on the bottom left corner (used for normal
+%   frames when the appropriate option is selected).
+%    \begin{macrocode}
+\defbeamertemplate{background}{cyberbottom}{
+\tikzstyle{cyberVertex}=[scale=1,draw=tGrey!60,circle,fill=white]
+\tikzstyle{cyberVertex2}=[scale=0.5,draw=tGrey!60,circle,fill=tGrey!60]
+\tikzstyle{cyberEdge} = [draw,color=tGrey!60]
+\begin{tikzpicture}[blend group=multiply]
+	\useasboundingbox (0,0) rectangle(\the\paperwidth,\the\paperheight);
+	\foreach \pos/\name in {
+			{(-0.05\paperwidth,0.75\paperheight)/0},
+			{(0.02\paperwidth,0.53\paperheight)/1},
+			{(-0.04\paperwidth,0.38\paperheight)/2},
+			{(0.08\paperwidth,0.40\paperheight)/3},
+			{(0.052\paperwidth,0.21\paperheight)/5},
+			{(0.24\paperwidth,0.26\paperheight)/6},
+			{(-0.08\paperwidth,-0.06\paperheight)/7},
+			{(0.12\paperwidth,0.07\paperheight)/8},
+			{(0.2\paperwidth,0.-0.08\paperheight)/9},
+			{(0.38\paperwidth,0.06\paperheight)/10},
+			{(0.56\paperwidth,-0.08\paperheight)/11}}
+	\node[cyberVertex] (\name) at \pos {};
+	\foreach \pos/\name in {
+			{(-0.05\paperwidth,0.75\paperheight)/0},
+			{(0.02\paperwidth,0.53\paperheight)/1},
+			{(-0.04\paperwidth,0.38\paperheight)/2},
+			{(0.08\paperwidth,0.40\paperheight)/3},
+			{(0.052\paperwidth,0.21\paperheight)/5},
+			{(0.24\paperwidth,0.26\paperheight)/6},
+			{(-0.08\paperwidth,-0.06\paperheight)/7},
+			{(0.12\paperwidth,0.07\paperheight)/8},
+			{(0.2\paperwidth,0.-0.08\paperheight)/9},
+			{(0.38\paperwidth,0.06\paperheight)/10},
+			{(0.56\paperwidth,-0.08\paperheight)/11}}
+	\node[cyberVertex2] (\name_2) at \pos {};
+	\foreach \source/ \dest in
+		{0/1,1/2,1/3,2/3,2/5,3/5,3/6,5/6,5/7,7/8,5/8,8/6,8/9,6/9,9/10,10/6,10/11}
+	\path[cyberEdge] (\source) --  (\dest);
+\end{tikzpicture}
+}
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{titlebigimage}
+%   Background for title page with a big image in the top left corener.
+%    \begin{macrocode}
+\defbeamertemplate{background}{titlebigimage}{
+	\begin{tikzpicture}
+		\useasboundingbox (0,0) rectangle(\the\paperwidth,\the\paperheight);
+		\begin{scope}[blend group=multiply]
+			\path[fill=tPrim]\leftTriangle{0.5\paperwidth}{0};
+			\topColorTriangle{0.73\paperwidth}{0.70\paperheight}{tGrey!30};
+			\ifx\inserttitlegraphic\@empty
+				\leftColorTriangle{0.73\paperwidth}{0.70\paperheight}{tPrim}
+			\else
+				\path[clip]\leftTriangle{0.73\paperwidth}{0.70\paperheight};
+				\node[anchor=north west, inner sep=0pt, outer sep=0pt] at (0,\the\paperheight) {\inserttitlegraphic};
+			\fi
+		\end{scope}
+		\path[fill=white]\rightTriangle{0.45\paperwidth}{\the\paperheight};
+		\ifx\logbig\@empty \else
+			\node[anchor=north east,inner sep=0mm] at
+			(.96*\the\paperwidth,.96*\the\paperheight) {\includegraphics[width=0.28\textwidth]{\logbig}};
+		\fi
+	\end{tikzpicture}
+}
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{titlesmallimage}
+%   Background for the titlepage with a small image in the top left corner.
+%    \begin{macrocode}
+\defbeamertemplate{background}{titlesmallimage}{
+	\begin{tikzpicture}[blend group=multiply]
+		\useasboundingbox (0,0) rectangle(\the\paperwidth,\the\paperheight);
+		\leftColorTriangle{0.58\paperwidth}{0}{tGrey!30}
+		\ifx\logbig\@empty \else
+			\node[anchor=north east,inner sep=0mm] at (.94*\the\paperwidth,.94*\the\paperheight) {\includegraphics[width=0.33\textwidth]{\logbig}};
+		\fi
+		\ifx\inserttitlegraphic\@empty
+			\leftColorTriangle{0.58\paperwidth}{\the\paperheight}{tPrim}
+		\else
+			\path[clip]\leftTriangle{0.58\paperwidth}{\the\paperheight};
+			\node[anchor=north west, inner sep=0pt, outer sep=0pt] at (0,\the\paperheight) {\inserttitlegraphic};
+		\fi
+	\end{tikzpicture}
+}
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{bottomtrianglescolor}
+%   Background for title/section pages with two colored triangles in the
+%   bottom.
+%    \begin{macrocode}
+\defbeamertemplate{background}{bottomtrianglescolor}{
+	\begin{tikzpicture}[blend group=multiply]
+		\useasboundingbox (0,0) rectangle(\the\paperwidth,\the\paperheight);
+		\leftColorTriangle{0.62\paperwidth}{0}{tPrim}
+		\rightColorTriangle{0.38\paperwidth}{0}{tSec}
+	\end{tikzpicture}
+}
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{bottomtrianglesbw}
+%   Background for title/section pages with two black and white triangles in
+%   the bottom.
+%    \begin{macrocode}
+\defbeamertemplate{background}{bottomtrianglesbw}{
+	\begin{tikzpicture}[blend group=multiply]
+		\useasboundingbox (0,0) rectangle(\the\paperwidth,\the\paperheight);
+		\leftColorTriangle{0.62\paperwidth}{0}{tPrim}
+		\rightColorTriangle{0.38\paperwidth}{0}{tGrey}
+	\end{tikzpicture}
+}
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{bigtriangles}
+%   Background for section pages with a big triangle on the left.
+%    \begin{macrocode}
+\defbeamertemplate{background}{bigtriangles}{
+	\begin{tikzpicture}[blend group=multiply]
+		\useasboundingbox (0,0) rectangle(\the\paperwidth,\the\paperheight);
+		\leftColorTriangle{0.80\paperwidth}{0.62\paperheight}{tPrim}
+		\rightColorTriangle{0.68\paperwidth}{0.58\paperheight}{tGrey}
+	\end{tikzpicture}
+}
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{lefttriangles}
+%   Background for section pages with small triangles on the left.
+%    \begin{macrocode}
+\defbeamertemplate{background}{lefttriangles}{
+	\begin{tikzpicture}[blend group=multiply]
+		\useasboundingbox (0,0) rectangle(\the\paperwidth,\the\paperheight);
+		\leftColorTriangle{0.52\paperwidth}{\the\paperheight}{tPrim}
+		\leftColorTriangle{0.775\paperwidth}{0}{tGrey}
+	\end{tikzpicture}
+}
+%    \end{macrocode}
+% \end{macro}
+%
+% Before anything, the regular frame background is selected.
+%    \begin{macrocode}
+\setbeamertemplate{background}[\slidestyle]
+%    \end{macrocode}
+%
+% Finally, we need to set the backgrounds properly before creating the different
+% frames, create the special frames (title, section) and restore the regular
+% background afterwards.
+%
+% \begin{macro}{\titleframe}
+%   Sets the titleframe.
+%    \begin{macrocode}
+\newcommand{\titleframe}{
+	\setbeamertemplate{title page}[\titlestyle]
+	\setbeamertemplate{background}[\titlestyle]
+	\frame[plain,noframenumbering]{\titlepage}
+	\setbeamertemplate{background}[\slidestyle]
+}
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\sectionframe}
+%   Sets the titleframe.
+%    \begin{macrocode}
+\newcommand{\sectionframe}{
+	\setbeamertemplate{section page}[\sectionstyle]
+	\setbeamertemplate{background}[\sectionstyle]
+	\frame[plain,noframenumbering]{\sectionpage}
+	\setbeamertemplate{background}[\slidestyle]
+}
+\newcommand{\trigon@disablesectionpage}{
+	\AtBeginSection{
+		% intentionally empty
+	}
+}
+\newcommand{\trigon@enablesectionpage}{
+	\AtBeginSection{
+		\sectionframe
+	}
+}
+%    \end{macrocode}
+% \end{macro}
+%
+%
+% \subsubsection{Layout}
+% The following macros define the proper position of the various elements of the
+% frame, so the fit nicely with the different background selected.
+%
+% \begin{macro}{titlebigimage}
+%   Place the text on the title frame with a big image on the top left side.
+%    \begin{macrocode}
+\defbeamertemplate{title page}{titlebigimage}
+{
+	\vskip140pt
+	\begin{flushright}
+		\begin{minipage}[t][][c]{0.5\textwidth}%
+			\centering
+			\usebeamerfont{title}\usebeamercolor[fg]{title}
+			\inserttitle\par
+		\end{minipage}
+		\ifx \insertsubtitle\@empty
+		\else
+			\vskip15pt
+			\begin{minipage}[t][][c]{0.5\textwidth}%
+				\centering
+				\usebeamerfont{subtitle}\insertsubtitle\par%
+			\end{minipage}
+		\fi
+		\vskip15pt
+		\begin{minipage}[t][][c]{0.5\textwidth}%
+			\centering
+			\usebeamerfont{author}\insertauthor%
+			\vskip10pt
+			\usebeamerfont{date}\insertdate%
+		\end{minipage}
+	\end{flushright}
+	\vfill
+}
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{titlesmallimage}
+%   Place the text on the title frame with a small image on the top left side.
+%    \begin{macrocode}
+\defbeamertemplate{title page}{titlesmallimage}
+{
+	\vskip140pt%
+	\begin{beamercolorbox}[wd=\textwidth,sep=4pt]{title page header}
+		\usebeamerfont{title}\usebeamercolor[fg]{title}\inserttitle\par%
+	\end{beamercolorbox}%
+	\ifx \insertsubtitle\@empty
+	\else
+		\vskip8pt
+		\begin{beamercolorbox}[wd=\textwidth,sep=4pt]{subtitle page header}
+			\usebeamerfont{subtitle}\insertsubtitle\par%
+		\end{beamercolorbox}%
+	\fi
+	\vskip10pt
+	\begin{beamercolorbox}[wd=\textwidth,sep=4pt]{author}
+		\usebeamerfont{author}\insertauthor%
+	\end{beamercolorbox}
+	\vskip2pt%
+	\begin{beamercolorbox}[wd=\textwidth,sep=4pt]{date}
+		\usebeamerfont{date}\insertdate%
+	\end{beamercolorbox}
+	\vfill
+}
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{bottomtrianglescolor}
+%   Place the text on the title frame with two triangles on the bottom.
+%    \begin{macrocode}
+\defbeamertemplate{title page}{bottomtrianglescolor}
+{
+	\vskip0pt
+	\begin{center}
+		\begin{minipage}[t][][t]{\textwidth}
+			\centering%
+			\ifx\logbig\@empty \else
+				\includegraphics[height=0.15\textheight]{\logbig}
+			\fi
+		\end{minipage}
+		\vskip15pt
+		\begin{minipage}[t][][c]{\textwidth}%
+			\centering
+			\usebeamerfont{title}\usebeamercolor[fg]{title}
+			\inserttitle\par
+		\end{minipage}
+		\ifx \insertsubtitle\@empty
+		\else
+			\vskip15pt
+			\begin{minipage}[t][][c]{\textwidth}%
+				\centering
+				\usebeamerfont{subtitle}\insertsubtitle\par%
+			\end{minipage}
+		\fi
+		\vskip20pt
+		\begin{minipage}[t][][c]{0.5\textwidth}%
+			\centering
+			\usebeamerfont{author}\insertauthor\\[0.3cm]%
+			\usebeamerfont{date}\insertdate
+		\end{minipage}
+	\end{center}
+	\vfill
+}
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{bottomtrianglescolor}
+%   Place the text on the section frame with two colored triangles on the
+%   bottom.
+%    \begin{macrocode}
+\defbeamertemplate{section page}{bottomtrianglescolor}
+{
+	\vskip40pt
+	\begin{center}
+		\begin{minipage}[t][][c]{\textwidth}%
+			\centering
+			\usebeamerfont{section title}\usebeamercolor[fg]{title}
+			\insertsectionhead\par
+		\end{minipage}
+	\end{center}
+	\vfill
+}
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{bottomtrianglesbw}
+%   Place the text on the section frame with two black and white triangles on
+%   the bottom.
+%    \begin{macrocode}
+\defbeamertemplate{section page}{bottomtrianglesbw}
+{
+	\vskip40pt
+	\begin{center}
+		\begin{minipage}[t][][c]{\textwidth}%
+			\centering
+			\usebeamerfont{section title}\usebeamercolor[fg]{title}
+			\insertsectionhead\par
+		\end{minipage}
+	\end{center}
+	\vfill
+}
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{bigtriangles}
+%   Place the text on the section frame with two big triangles.
+%    \begin{macrocode}
+\defbeamertemplate{section page}{bigtriangles}
+{
+	\vskip200pt
+	\begin{flushright}
+		\begin{minipage}[t]{0.62\textwidth}%7
+			\usebeamerfont{section title}\usebeamercolor[fg]{title}
+			\raggedleft
+			\insertsectionhead\par
+		\end{minipage}
+	\end{flushright}
+	\vfill
+}
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{lefttriangles}
+%   Place the text on the section frame with two small left triangles.
+%    \begin{macrocode}
+\defbeamertemplate{section page}{lefttriangles}
+{
+	\vskip25pt
+	\begin{beamercolorbox}[wd=\textwidth,leftskip=100pt,sep=4pt]{section page header}
+		\usebeamerfont{section title}\usebeamercolor[fg]{title}
+		\insertsectionhead\par
+	\end{beamercolorbox}%
+	\vfill
+}
+%    \end{macrocode}
+% \end{macro}
+%
+%
+% \subsubsection{Lists and floats}
+%
+%    \begin{macrocode}
+\setbeamertemplate{caption label separator}{: }
+\setbeamertemplate{caption}[numbered]
+%    \end{macrocode}
+%
+%
+% \subsubsection{Margins}
+% The margins are defined as
+%    \begin{macrocode}
+\setbeamersize{text margin left=.05\paperwidth, text margin right=.05\paperwidth}
+%    \end{macrocode}
+%
+% \subsubsection{Process package options}
+%
+%    \begin{macrocode}
+\trigon@inner@setdefaults
+\ProcessPgfPackageOptions{/trigon/inner}
+%    \end{macrocode}
+%
+% \iffalse
+%</package>
+% \fi
+% \Finale
+\endinput
diff --git a/Master/texmf-dist/source/latex/beamertheme-trigon/beamerouterthemetrigon.dtx b/Master/texmf-dist/source/latex/beamertheme-trigon/beamerouterthemetrigon.dtx
new file mode 100644
index 00000000000..e8302d4e230
--- /dev/null
+++ b/Master/texmf-dist/source/latex/beamertheme-trigon/beamerouterthemetrigon.dtx
@@ -0,0 +1,163 @@
+% \iffalse meta-comment -------------------------------------------------------
+% Copyright (C) 2021 Thomas Lambert <trigon@thl.ovh>
+% Other contributors to this theme are listed here:
+%     https://gitlab.com/thlamb/beamertheme-trigon/-/graphs/master
+%
+% The original template was heavily inspired by Metropolis from Matthias
+% Vogelgesang.
+%
+% License CC-BY-SA 4.0
+% This work is licensed under a Creative Commons Attribution-ShareAlike 4.0
+% International License (https://creativecommons.org/licenses/by-sa/4.0/)
+% ------------------------------------------------------------------------- \fi
+% \iffalse
+%<*package>
+\NeedsTeXFormat{LaTeX2e}
+\ProvidesPackage{beamerouterthemetrigon}[2021/03/25 v0.5.0 Trigon outer theme]
+%</package>
+% \fi
+% \CheckSum{0}
+% \StopEventually{}
+% \iffalse
+%<*package>
+% ------------------------------------------------------------------------- \fi
+%
+% \subsection{\themename outer theme}
+%
+% A |beamer| outer theme dictates the style of the frame elements traditionally
+% set outside the ``body'' of each slide, such as the frame title, the logo, the
+% footer, etc.
+%
+% \subsubsection{Package dependencies}
+%
+%    \begin{macrocode}
+\RequirePackage{pgfopts}
+%    \end{macrocode}
+%
+% \subsubsection{Definitions}
+% We define the command |\logsmall| to specify the logo that needs to be applied
+% displayed on all normal frames.
+%   \begin{macrocode}
+\def\logsmall{}
+\newcommand\smalllogo[1]{
+  \def\logsmall{#1}
+}
+%   \end{macrocode}
+%
+% \subsubsection{Options}
+%
+% \begin{macro}{numbering}
+%   Adds slide number to the bottom of each regular frame
+%   \begin{macrocode}
+\pgfkeys{
+  /trigon/outer/numbering/.cd,
+    .is choice,
+    none/.code=\setbeamertemplate{frame numbering}[none],
+    counter/.code=\setbeamertemplate{frame numbering}[counter],
+    fraction/.code=\setbeamertemplate{frame numbering}[fraction]
+}
+%   \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{\trigon@outer@setdefaults}
+%   Sets default values for the outer theme options.
+%   \begin{macrocode}
+\newcommand{\trigon@outer@setdefaults}{
+  \pgfkeys{/trigon/outer/.cd,
+    numbering=counter
+  }
+}
+%   \end{macrocode}
+% \end{macro}
+%
+%
+% \subsubsection{Frame title}
+% \begin{macro}{frametitle}
+% Template for the frame title
+%   \begin{macrocode}
+\defbeamertemplate*{frametitle}{trigon}
+{
+  \vspace{-1pt}
+  \begin{beamercolorbox}[wd=\paperwidth,leftskip=0.05\paperwidth]{frametitle}
+  \vskip.4cm
+  \ifx\insertframesubtitle\@empty%
+      {\usebeamerfont{frametitle}\usebeamercolor[fg]{frametitle}\insertframetitle}%
+  \else%
+      {\usebeamerfont{frametitle}\usebeamercolor[fg]{frametitle}\insertframetitle}\\[-.25cm]
+      {\usebeamerfont{framesubtitle}\usebeamercolor[fg]{framesubtitle}\insertframesubtitle}%
+  \fi
+  \vskip.3cm
+  \end{beamercolorbox}
+}
+%   \end{macrocode}
+% \end{macro}
+%
+%
+% \subsubsection{Fame header}
+% \begin{macro}{headline}
+% Templates for the frame header
+%   \begin{macrocode}
+\defbeamertemplate{headline}{none}{}
+\defbeamertemplate*{headline}{logo}{
+\ifx\logsmall\@empty\else
+  \hfill\includegraphics[width=20pt]{\logsmall}\hspace{20pt}\vspace{-40pt}
+\fi
+}
+%   \end{macrocode}
+% \end{macro}
+%
+%
+% \subsubsection{Frame footer}
+% Define various template for frame footer and manage frame numbering.
+% \begin{macrocode}
+\setbeamertemplate{navigation symbols}{}
+
+\defbeamertemplate{frame footer}{none}{}
+\defbeamertemplate{frame footer}{custom}[1]{ #1 }
+\defbeamertemplate{frame numbering}{none}{}
+\defbeamertemplate{frame numbering}{counter}{\insertframenumber}
+\defbeamertemplate{frame numbering}{fraction}{
+  \insertframenumber/\inserttotalframenumber
+}
+
+\defbeamertemplate{footline}{plain}{%
+  \begin{beamercolorbox}[wd=\textwidth, sep=10pt]{page number in head/foot}%
+    \usebeamerfont{page number in head/foot}%
+    \usebeamercolor[fg]{page number in head/foot}%
+    \usebeamertemplate*{frame footer}
+    \hfill%
+    \usebeamertemplate*{frame numbering}
+  \end{beamercolorbox}%
+}
+
+\setbeamertemplate{footline}[plain]
+% \end{macrocode}
+%
+% \begin{macro}{appendix}
+%    Removes page numbering and per-slide progress bars when |\appendix| is
+%    called. This makes it easier to include additional ``backup slides'' at
+%    the end of the presentation, especially in conjunction with the package
+%    |appendixnumberbeamer|.
+%    \begin{macrocode}
+\AtBeginDocument{%
+  \apptocmd{\appendix}{%
+    \pgfkeys{%
+      /trigon/outer/.cd,
+      numbering=none}
+    }{}{}
+}
+%   \end{macrocode}
+% \end{macro}
+%
+% \subsubsection{Process package options}
+%
+%    \begin{macrocode}
+\trigon@outer@setdefaults
+\ProcessPgfPackageOptions{/trigon/outer}
+%    \end{macrocode}
+%
+% \iffalse
+%</package>
+% \fi
+% \Finale
+\endinput
diff --git a/Master/texmf-dist/source/latex/beamertheme-trigon/beamerthemetrigon.dtx b/Master/texmf-dist/source/latex/beamertheme-trigon/beamerthemetrigon.dtx
new file mode 100644
index 00000000000..1cd8f763f69
--- /dev/null
+++ b/Master/texmf-dist/source/latex/beamertheme-trigon/beamerthemetrigon.dtx
@@ -0,0 +1,155 @@
+% \iffalse meta-comment -------------------------------------------------------
+% Copyright (C) 2021 Thomas Lambert <trigon@thl.ovh>
+% Other contributors to this theme are listed here:
+%     https://gitlab.com/thlamb/beamertheme-trigon/-/graphs/master
+%
+% The original template was heavily inspired by Metropolis from Matthias
+% Vogelgesang.
+%
+% License CC-BY-SA 4.0
+% This work is licensed under a Creative Commons Attribution-ShareAlike 4.0
+% International License (https://creativecommons.org/licenses/by-sa/4.0/)
+% ------------------------------------------------------------------------- \fi
+% \iffalse
+%<*package>
+\NeedsTeXFormat{LaTeX2e}
+\ProvidesPackage{beamerthemetrigon}[2021/03/25 v0.5.0 Trigon Beamer theme]
+%</package>
+% \fi
+% \CheckSum{0}
+% \StopEventually{}
+% \iffalse
+%<*package>
+% ------------------------------------------------------------------------- \fi
+%
+%
+% \subsection{\themename parent theme}
+%
+% The primary job of this package is to load the component sub-packages of the
+% \themename theme and route the theme options accordingly. It also
+% provides some custom commands and environments for the user.
+%
+%
+% \subsubsection{Package dependencies}
+%
+%   \begin{macrocode}
+\RequirePackage{pgfopts}
+\RequirePackage{tikz}
+%    \end{macrocode}
+%
+%
+%\subsubsection{Options}
+%
+% Most options are passed off to the component sub-packages.
+%
+%   \begin{macrocode}
+\pgfkeys{/trigon/.cd,
+  .search also={
+    /trigon/inner,
+    /trigon/outer,
+    /trigon/color,
+    /trigon/font
+  }
+}
+%    \end{macrocode}
+%
+% \begin{macro}{titleformat plain}
+%    Controls the formatting of the text on standout ``plain'' frames.
+%   \begin{macrocode}
+\pgfkeys{
+  /trigon/titleformat plain/.cd,
+    .is choice,
+    regular/.code={%
+      \let\trigon@plaintitleformat\@empty%
+      \setbeamerfont{standout}{shape=\normalfont}%
+    },
+    smallcaps/.code={%
+      \let\trigon@plaintitleformat\@empty%
+      \setbeamerfont{standout}{shape=\scshape}%
+    },
+    allsmallcaps/.code={%
+      \let\trigon@plaintitleformat\MakeLowercase%
+      \setbeamerfont{standout}{shape=\scshape}%
+      \PackageWarning{beamerthemetrigon}{%
+        Be aware that titleformat plain=allsmallcaps can lead to problems%
+      }
+    },
+    allcaps/.code={%
+      \let\trigon@plaintitleformat\MakeUppercase%
+      \setbeamerfont{standout}{shape=\normalfont}%
+      \PackageWarning{beamerthemetrigon}{%
+        Be aware that titleformat plain=allcaps can lead to problems%
+      }
+    },
+}
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{titleformat}
+%    Sets a standard format for titles, subtitles, section titles, frame
+%    titles, and the text on standout ``plain'' frames.
+%   \begin{macrocode}
+\pgfkeys{
+  /trigon/titleformat/.code=\pgfkeysalso{
+      font/titleformat title=#1,
+      font/titleformat subtitle=#1,
+      font/titleformat section=#1,
+      font/titleformat frame=#1,
+      titleformat plain=#1,
+    }
+}
+%    \end{macrocode}
+% \end{macro}
+%
+% \begin{macro}{usesourcefonts}
+%     Select whereas the Source Sans Pro font is being loaded automatically or
+%     not.
+%   \begin{macrocode}
+\newif\if@trigon@usesourcefonts
+\pgfkeys{/trigon/.cd,
+  usesourcefonts/.is if=@trigon@usesourcefonts,
+  usesourcefonts=true,
+}
+%    \end{macrocode}
+% \end{macro}
+%
+% \subsubsection{Component sub-packages}
+%
+% Having processed the options, we can now load the component sub-packages of
+% the theme.
+%
+%   \begin{macrocode}
+\useinnertheme{trigon}
+\useoutertheme{trigon}
+\usecolortheme{trigon}
+\usefonttheme{trigon}
+%    \end{macrocode}
+%
+%
+% \subsubsection{Custom commands}
+%
+% The parent theme defines custom commands as their proper usage may depend
+% on multiple sub-packages.
+%
+% \begin{macro}{\metroset}
+%    Allows the user to change options midway through a presentation.
+%    \begin{macrocode}
+\newcommand{\trigonset}[1]{\pgfkeys{/trigon/.cd,#1}}
+%    \end{macrocode}
+% \end{macro}
+%
+% \subsubsection{Process package options}
+%
+%   \begin{macrocode}
+\ProcessOptionsBeamer
+\ProcessPgfOptions{/trigon}
+\if@trigon@usesourcefonts%
+  \RequirePackage[default,t1,semibold]{sourcesanspro}
+\fi
+%    \end{macrocode}
+%
+% \iffalse
+%</package>
+% \fi
+% \Finale
+\endinput
diff --git a/Master/texmf-dist/source/latex/beamertheme-trigon/beamerthemetrigon.ins b/Master/texmf-dist/source/latex/beamertheme-trigon/beamerthemetrigon.ins
new file mode 100644
index 00000000000..b7e7a3c8eeb
--- /dev/null
+++ b/Master/texmf-dist/source/latex/beamertheme-trigon/beamerthemetrigon.ins
@@ -0,0 +1,69 @@
+%% ---------------------------------------------------------------------------
+%% Copyright (C) 2021 Thomas Lambert <trigon@thl.ovh>
+%% Other contributors to this theme are listed here:
+%%     https://gitlab.com/thlamb/beamertheme-trigon/-/graphs/master
+%%
+%% The original template was heavily inspired by Metropolis from Matthias
+%% Vogelgesang.
+%%
+%% License CC-BY-SA 4.0
+%% This work is licensed under a Creative Commons Attribution-ShareAlike 4.0
+%% International License (https://creativecommons.org/licenses/by-sa/4.0/)
+%% ---------------------------------------------------------------------------
+
+\input docstrip.tex %
+\keepsilent
+\askforoverwritefalse
+\usedir{tex/latex/beamertheme-trigon}
+
+\preamble
+---------------------------------------------------------------------------
+Copyright (C) 2021 Thomas Lambert <trigon@thl.ovh>
+Other contributors to this theme are listed here:
+    https://gitlab.com/thlamb/beamertheme-trigon/-/graphs/master
+
+The original template was heavily inspired by Metropolis from Matthias
+Vogelgesang.
+
+License CC-BY-SA 4.0
+This work is licensed under a Creative Commons Attribution-ShareAlike 4.0
+International License (https://creativecommons.org/licenses/by-sa/4.0/)
+---------------------------------------------------------------------------
+\endpreamble
+
+\generate{\file{beamerthemetrigon.sty}{%
+          \from{beamerthemetrigon.dtx}{package}}
+          }
+\generate{\file{beamerinnerthemetrigon.sty}{%
+          \from{beamerinnerthemetrigon.dtx}{package}}
+          }
+\generate{\file{beamerouterthemetrigon.sty}{%
+          \from{beamerouterthemetrigon.dtx}{package}}
+          }
+\generate{\file{beamerfontthemetrigon.sty}{%
+          \from{beamerfontthemetrigon.dtx}{package}}
+          }
+\generate{\file{beamercolorthemetrigon.sty}{%
+          \from{beamercolorthemetrigon.dtx}{package}}
+          }
+
+\obeyspaces
+\Msg{*******************************************************************}
+\Msg{*                                                                 *}
+\Msg{* To finish the installation you have to move the following       *}
+\Msg{* files into a directory searched by TeX:                         *}
+\Msg{*                                                                 *}
+\Msg{*     beamerthemetrigon.sty                                       *}
+\Msg{*     beamerinnerthemetrigon.sty                                  *}
+\Msg{*     beamerouterthemetrigon.sty                                  *}
+\Msg{*     beamerfontthemetrigon.sty                                   *}
+\Msg{*     beamercolorthemetrigon.sty                                  *}
+\Msg{*                                                                 *}
+\Msg{* To produce the documentation run the file docs/themetrigon.dtx  *}
+\Msg{* through LaTeX.                                                  *}
+\Msg{*                                                                 *}
+\Msg{* Happy TeXing!                                                   *}
+\Msg{*                                                                 *}
+\Msg{*******************************************************************}
+
+\endbatchfile
diff --git a/Master/texmf-dist/source/latex/beamertheme-trigon/trigontheme.dtx b/Master/texmf-dist/source/latex/beamertheme-trigon/trigontheme.dtx
new file mode 100644
index 00000000000..e40dd1431f6
--- /dev/null
+++ b/Master/texmf-dist/source/latex/beamertheme-trigon/trigontheme.dtx
@@ -0,0 +1,454 @@
+%% ---------------------------------------------------------------------------
+%% Copyright (C) 2021 Thomas Lambert <trigon@thl.ovh>
+%% Other contributors to this theme are listed here:
+%%     https://gitlab.com/thlamb/beamertheme-trigon/-/graphs/master
+%%
+%% The original template was heavily inspired by Metropolis from Matthias
+%% Vogelgesang.
+%%
+%% License CC-BY-SA 4.0
+%% This work is licensed under a Creative Commons Attribution-ShareAlike 4.0
+%% International License (https://creativecommons.org/licenses/by-sa/4.0/)
+%% ---------------------------------------------------------------------------
+
+\documentclass{ltxdoc}
+%\OnlyDescription
+
+\usepackage{xcolor}
+\definecolor{tPrim}{HTML}{00707F}   % Green-Blue
+\definecolor{tSec}{HTML}{5FA4B0}    % Green-Blue light
+\definecolor{tAccent}{HTML}{F07F3C} % Orange
+\definecolor{tGrey}{HTML}{E6E6E1}   % Grey-Beige
+
+\usepackage[default,t1,semibold]{sourcesanspro}
+
+\usepackage{parskip}
+\usepackage{setspace}
+\usepackage{xspace}
+\onehalfspacing
+
+%\usepackage{enumitem}
+%\setlist[itemize]{noitemsep}
+%\setlist[enumerate]{noitemsep}
+
+\usepackage{listings}
+\lstset{%
+  language=[LaTeX]{TeX},
+  basicstyle=\ttfamily,
+  keywordstyle=\color{tPrim}\bfseries,
+  commentstyle=\color{tSec},
+  stringstyle=\color{tSec},
+  backgroundcolor=\color{white},
+  numbers=none,
+  numberstyle=\tiny\ttfamily,
+  stepnumber=2,
+  showspaces=false,
+  showstringspaces=false,
+  showtabs=false,
+  frame=none,
+  framerule=1pt,
+  tabsize=2,
+  rulesep=5em,
+  captionpos=b,
+  breaklines=true,
+  breakatwhitespace=false,
+  framexleftmargin=0em,
+  framexrightmargin=0em,
+  xleftmargin=0em,
+  xrightmargin=0em,
+  aboveskip=1em,
+  belowskip=1em,
+  morekeywords={usetheme,institute,maketitle,@trigon@titleformat,%
+                plain,trigonset,setbeamercolor},
+}
+\lstMakeShortInline|
+\usepackage{metalogo}
+
+\setcounter{tocdepth}{2}
+
+\usepackage[colorlinks=true,
+            linkcolor=tPrim,
+            menucolor=tPrim,
+            urlcolor=tPrim]{hyperref}
+
+\setlength{\fboxsep}{0pt}%
+\usepackage{caption} % For subfigures
+\usepackage{subcaption} % For subfigures
+
+\newcommand{\DescribeOption}[4]{
+  \DescribeMacro{#1}
+  \begin{minipage}[t]{\textwidth}
+    \textit{\textbf{\textcolor{tSec}{#2}}}\dotfill\,#3\par
+    \begingroup
+    \vspace{0.5em}#4\par
+    \endgroup
+  \end{minipage}
+}
+
+
+%% ------------------------------------------------------------------------------
+\newcommand{\themename}{\textbf{\textsc{Trigon}}\xspace}
+\usepackage{readprov}
+\ReadPackageInfos{beamerthemetrigon}
+
+
+%% =============================================================================
+
+\title{\textsc{Trigon}\\ A Modern, elegant and versatile theme for Beamer}
+\author{Thomas Lambert \\ \url{trigon@thl.ovh}}
+\date{\fileversion~---~\filedate}
+
+%% =============================================================================
+
+\begin{document}
+
+\maketitle
+\tableofcontents
+
+
+%% ------------------------------------
+\section{Introduction}
+
+\themename found its origin and inspiration in the graphical guidelines
+resulting from the visual identity overhaul of the
+\href{https://www.uliege.be}{Univeristy of Liège} (Belgium).\\
+Although directly inspired from these guidelines, \themename was stripped out of
+any mention or specificities related the University and its faculties. This
+makes the \themename theme perfectly suitable for many different contexts.
+
+The final product provides a modern, elegant and versatile theme with a
+high degree of customization.
+
+\themename's codebase lives on
+\href{https://gitlab.com/thlamb/beamertheme-trigon} {Gitlab}. The implementation
+of this theme is strongly inspired from the excellent
+\href{https://github.com/matze/mtheme}{\textsc{Metropolis}} theme by Matthias
+Vogelgesang, from which it borrows numerous options.\newline
+Any feature request, issue report or merge requests are welcome.
+
+
+%% ------------------------------------
+\section{Getting Started}
+
+\subsection{Installing from Gitlab}
+
+If you want to use the cutting-edge development version of \themename, you can
+install it manually by following these steps:
+\begin{description}
+  \item[Download the source] from
+    \href{https://gitlab.com/thlamb/beamertheme-trigon}{\themename repository}
+    using |git clone| or as a \href{https://gitlab.com/thlamb/beamertheme-trigon/-/archive/master/beamertheme-trigon-master.zip}{zip archive} of the latest development version.
+  \item[Compile the style files] by running |make sty| inside the downloaded
+    directory. (Or run \LaTeX{} directly on |source/trigontheme.ins|.)
+  \item[Move the resulting |*.sty| files] to the folder containing your
+    presentation. To use \themename with many presentations, run
+    |make install| or move the |*.sty| files to a folder in your \TeX{} path
+    instead.
+  \item[Use the theme] by declaring |\usetheme{trigon}| in the preamble of your
+    document.
+\end{description}
+
+\themename uses the Make build system to offer the following installation
+options for advanced users:
+
+\begin{description}
+  \item[|make sty|] builds the theme style files.
+  \item[|make doc|] builds this documentation manual.
+  \item[|make demo|] builds a demo presentation to test the features of
+    \themename.
+  \item[|make all|] builds the theme and manual.
+  \item[|make clean|] removes the files generated by |make all|.
+  \item[|make install|] installs the theme into your local texmf folder.
+  \item[|make uninstall|] removes the theme from your local texmf folder.
+\end{description}
+
+
+\subsection{Other install methods}
+
+\themename will be proposed for integration on \href{https://www.ctan.org}{CTAN}
+shortly. It will then hopefully be integrated to texlive, miktex, etc. In the
+meantime, only the installation from Gitlab is possible.
+
+Once accepted on CTAN, the theme will also be made available on
+\href{https://www.overleaf.com}{Overleaf}.
+
+\subsection{A Minimal Example}
+
+The following code shows a minimal example of a Beamer presentation using
+\themename.
+
+\begin{lstlisting}
+\documentclass{beamer}
+\usetheme{trigon}       % Use trigon theme
+\title{A minimal example}
+\subtitle{A subtitle example}
+\date{\today}
+\author{Thomas Lambert}
+\institute{Your university or company}
+\begin{document}
+  \maketitle
+  \section{First Section}
+  \begin{frame}{First Frame}
+    Hello, world!
+  \end{frame}
+\end{document}
+\end{lstlisting}
+
+
+\subsection{Dependencies}
+
+\themename depends on the |beamer| class and the following standard packages:
+\begin{itemize}
+  \item |tikz|
+  \item |pgfopts|
+\end{itemize}
+
+The theme works best with the open source
+\href{https://fonts.adobe.com/fonts/source-sans}{Source Sans Pro} font from
+Adobe.\newline
+Therefore, the package |sourcesanspro| is loaded by default with the theme.
+However, if the user prefers to select an other font, the theme option
+|nosourcefonts| can be used to prevent the font package from being loaded.
+
+
+%% ------------------------------------
+\section{Customization}
+
+\subsection{Package options}
+
+\themename provides a number of options, which can be set using a key=value
+interface. The primary way to set options is to provide a comma-separated list
+of option-value pairs when loading \themename in the preamble:
+\begin{lstlisting}
+\usetheme[option1=value1, option2=value2, ...]{trigon}
+\end{lstlisting}
+
+
+Options can be changed at any time --- even mid-presentation! --- with the
+|\trigonset| macro.
+\begin{lstlisting}
+\trigonset{option1=newvalue1, option2=newvalue2, ...}
+\end{lstlisting}
+
+The list of options is structured as shown in the following example.
+
+\DescribeOption{option key}{list of possible values}{default}{
+  A short description of the option.
+}
+
+As \themename implementation is heavily inspired from the excellent
+\href{https://github.com/matze/mtheme}{\textsc{Metropolis}} theme by Matthias
+Vogelgesang, many of \textsc{Metropolis} options are also available in
+\themename.
+
+\subsubsection{Main theme}
+
+\DescribeOption{titleformat}%
+               {regular, smallcaps, allsmallcaps, allcaps}
+               {regular}{
+  Changes the format of titles, subtitles, section titles, frame titles, and
+  the text on ``standout'' frames. The available options produce
+  Regular, \textsc{SmallCaps}, \textsc{\MakeLowercase{AllSmallCaps}}, or
+  \MakeUppercase{AllCaps} titles. Please refer to
+  Section~\ref{sec:titleformats} for known issues with these options.
+}
+
+\DescribeOption{usesourcefonts}{true,false}{true}{%
+  Choses if the |sourcesanspro| font package should be loaded |true| or not
+  |false|.
+}
+
+
+\subsubsection{Inner theme}
+
+\DescribeOption{sectionpage}{none, simple}{simple}{
+  Adds a slide at the start of each section (|simple|). The |none| option
+  disables the section page.
+}
+
+\DescribeOption{titlestyle}{plain, style1, style2}{style2}{
+  Changes the layout of the title page.
+}
+\begin{figure}[h!]
+  \begin{subfigure}[b]{0.3\textwidth}
+    \fbox{\includegraphics[width=\textwidth]{screenshots/layout_example-02.jpg}}
+    \caption*{plain}
+  \end{subfigure}
+  \hspace{\fill}
+  \begin{subfigure}[b]{0.3\textwidth}
+    \fbox{\includegraphics[width=\textwidth]{screenshots/layout_example-03.jpg}}
+    \caption*{style1}
+  \end{subfigure}
+  \hspace{\fill}
+  \begin{subfigure}[b]{0.3\textwidth}
+    \fbox{\includegraphics[width=\textwidth]{screenshots/layout_example-01.jpg}}
+    \caption*{style2 (default)}
+  \end{subfigure}
+\end{figure}
+
+\DescribeOption{sectionstyle}{plain, style1, style2, style3}{plain}{
+  Changes the layout of the section page. |style3| is similar to |plain| but
+  with the right triangle in grey instead of theme color.
+}
+\begin{figure}[h!]
+  \begin{subfigure}[b]{0.3\textwidth}
+    \fbox{\includegraphics[width=\textwidth]{screenshots/layout_example-04.jpg}}
+    \caption*{plain (default)}
+  \end{subfigure}
+  \hspace{\fill}
+  \begin{subfigure}[b]{0.3\textwidth}
+    \fbox{\includegraphics[width=\textwidth]{screenshots/layout_example-05.jpg}}
+    \caption*{style1}
+  \end{subfigure}
+  \hspace{\fill}
+  \begin{subfigure}[b]{0.3\textwidth}
+    \fbox{\includegraphics[width=\textwidth]{screenshots/layout_example-06.jpg}}
+    \caption*{style2}
+  \end{subfigure}
+\end{figure}
+
+\DescribeOption{slidestyle}{blank, style1, cyber}{blank}{
+  Changes the background of the regular frames.
+}
+\begin{figure}[h!]
+  \hspace{\fill}
+  \begin{subfigure}[b]{0.3\textwidth}
+    \fbox{\includegraphics[width=\textwidth]{screenshots/layout_example-08.jpg}}
+    \caption*{blank (default)}
+  \end{subfigure}
+  \hspace{\fill}
+  \begin{subfigure}[b]{0.3\textwidth}
+    \fbox{\includegraphics[width=\textwidth]{screenshots/layout_example-09.jpg}}
+    \caption*{style1}
+  \end{subfigure}
+  \hspace{\fill}
+  \begin{subfigure}[b]{0.3\textwidth}
+    \fbox{\includegraphics[width=\textwidth]{screenshots/layout_example-10.jpg}}
+    \caption*{cyber}
+  \end{subfigure}
+\end{figure}
+
+\subsubsection{Outer theme}
+
+\DescribeOption{numbering}{none, counter, fraction}{counter}{
+  Controls whether the frame number at the bottom right of each slide is
+  omitted (|none|), shown (|counter|) or displayed as a fraction of the total
+  number of frames (|fraction|).
+}
+
+\subsubsection{Color theme}
+\DescribeOption{block}{transparent, fill}{fill}{
+  Optionally adds a light grey background to block environments like |theorem|
+  and |example|.
+}
+
+\DescribeOption{headingcolor}{black, theme}{black}{
+  Controls weather the color of all headings (title page, frame title, etc.)
+  should be in |black| in a slightly darker shade of the theme color |theme|.
+}
+
+\DescribeOption{textgcolor}{black, theme}{black}{
+  Controls weather the color of the regular text elements should be in |black|
+  in a slightly darker shade of the theme color |theme|.
+}
+
+\subsubsection{Font theme}
+
+\DescribeMacro{titleformat title}
+\DescribeMacro{titleformat subtitle}
+\DescribeMacro{titleformat section}
+\DescribeOption{titleformat frame}%
+               {regular, smallcaps, allsmallcaps, allcaps}%
+               {regular}{
+  Individually controls the format of titles, subtitles, section titles, and
+  frame titles (see |titleformat|, above).
+}
+
+
+\subsection{Color Customization}
+
+The included \themename color theme is used by default, but its colors can be
+easily changed to suit your tastes. All of the theme's styles are defined in
+terms of four colors:
+\begin{itemize}
+  \item |tPrim| The primary theme color, used for main triangle elements, and
+    for headings and text if the appropriate options are selected.
+  \item |tSec| The secondary theme color (lighter shade of the primary color),
+    used for some triangle elements and example text.
+  \item |tAccent| The accent color, used mostly for alerted text.
+  \item |tGrey| A grey color, used for background elements (triangles, blocks,
+    etc.).
+\end{itemize}
+
+An easy way to customize the theme is to redefine these colors using
+
+\begin{lstlisting}
+  \colorlet{tPrim}{ ... }
+  \colorlet{tSec}{ ... }
+  \colorlet{tAccent}{ ... }
+  \colorlet{tGrey}{ ... }
+\end{lstlisting}
+in your preamble.
+
+\section{Tips \& Tricks}
+
+\subsection{Backup Slides}
+
+Speakers will often include extra slides at the end of their presentation to
+refer to during audience questions. One easy way to do this is to include the
+\verb|appendixnumberbeamer| package in your preamble and call \verb|\appendix|
+before your backup slides.
+
+\themename will automatically turn off slide numbering for slides in the
+appendix.
+
+
+\section{Known Issues}
+
+\subsection{Title formats}
+\label{sec:titleformats}
+
+Be aware that not every font supports small caps, so the |smallcaps| or
+|allsmallcaps| options may not work if you use a font other than
+|sourcesanspro|.
+
+The title format options |allsmallcaps| and |allcaps| are quite nice from an
+aesthetic point of view, but their use of |\MakeLowercase| and
+|\MakeUppercase| can cause unexpected problems. For example:
+
+\begin{itemize}
+    \item Some commands, like |\\|, do not work inside |\MakeLowercase| and
+      |\MakeUppercase|. (See \textsc{Metropolis}
+    \href{https://github.com/matze/mtheme/issues/125} {\#125})
+    \item Only alphabetic characters are affected by |\MakeLowercase|, so
+    numerals and punctuation remain at full height. This can spoil some of the
+    aesthetic benefits of |allsmallcaps|. (See \textsc{Metropolis}
+    \href{https://github.com/matze/mtheme/issues/33}{\#33})
+    \item |\MakeLowercase| and |\MakeUppercase| apply to math mode and
+    |\scshape| does not. This can easily introduce mathematical errors that
+    are hard to catch.
+    \item It is impossible to typeset symbols which are encoded as uppercase
+    letters in a different font. In particular, |\mathbb| and |\mathcal|
+    letters will be replaced by other math glyphs. (See \textsc{Metropolis}
+    \href{https://github.com/matze/mtheme/issues/153}{\#153})
+\end{itemize}
+
+The |allsmallcaps| and |allcaps| options are safe to use if your titles contain
+only alphabetic characters and do not require the expansion of any macros.
+
+
+\section{License}
+\themename is licensed under the terms of the
+\href{https://creativecommons.org/licenses/by-sa/4.0/}{Creative Commons 
+Attribution-ShareAlike 4.0} license.
+
+
+\section{Implementation}
+\DocInput{beamerthemetrigon.dtx}
+\DocInput{beamerinnerthemetrigon.dtx}
+\DocInput{beamerouterthemetrigon.dtx}
+\DocInput{beamerfontthemetrigon.dtx}
+\DocInput{beamercolorthemetrigon.dtx}
+
+\end{document}
+