diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..2f9a4f9
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,38 @@
+BASENAME=lines-example
+
+TEXFILE=$(BASENAME).tex
+PDFFILE=$(BASENAME).pdf
+
+all: talk again watchtalk clean cleanup cleanplots help
+
+talk: $(PDFFILE)
+$(PDFFILE): $(TEXFILE) beamer*.sty
+	pdflatex -interaction=scrollmode $< | tee /dev/stderr | fgrep -q "Rerun to get cross-references right" && pdflatex -interaction=scrollmode $< || true
+
+again :
+	pdflatex $(TEXFILE)
+
+
+watchtalk :
+	while true; do ! make -q talk && make talk; sleep 0.5; done
+
+
+clean :
+	rm -f *~
+	rmtex $(BASENAME)
+	rm -f $(PYTHONPDFFILES)
+
+cleanup : clean
+	rm -f $(PDFFILE)
+
+help : 
+	@echo -e \
+	"make talk:       make the pdf file of the talk.\n"\
+	"make again:      run latex and make the pdf file of the talk,\n"\
+        "                 no matter whether you changed the .tex file or not.\n\n"\
+	"make watchtalk:  make the pdf file of the talk\n"\
+        "                 whenever the tex file or the plots are modified.\n"\
+	"make clean:      remove all intermediate files,\n"\
+        "                 just leave the source files and the final pdf file.\n"\
+	"make cleanup:    remove all intermediate files as well as\n"\
+        "                 the final pdf file.\n"
diff --git a/lines-example.tex b/lines-example.tex
new file mode 100644
index 0000000..3974354
--- /dev/null
+++ b/lines-example.tex
@@ -0,0 +1,299 @@
+\documentclass[10pt,aspectratio=169,t,ignorenonframetext]{beamer}
+\usetheme[author,date,title,page,hidelogo]{lines}
+
+\title[Beamer lines]{Lines}
+\subtitle{a line-based theme for beamer}
+\author[Benda]{Jan Benda}
+\institute[T\"ubingen]{Neuroethology, University of T\"ubingen}
+\date[2021]{March 2021}
+%\logo{\includegraphics[height=3.5ex]{UT_BM_Rot_RGB}}
+%\titlelogo{\includegraphics[height=6ex]{UT_MNF_RGB}}
+%\titlegraphic{\includegraphics[width=\textwidth]{efishtitle}}
+
+\usepackage{listings}
+\lstset{language = tex}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+\begin{document}
+
+\begin{frame}[plain]
+  \titlepage
+\end{frame}
+
+\begin{frame}[fragile]{Lines theme}
+  \begin{block}{Include}
+    \begin{lstlisting}
+      \documentclass[aspectratio=169,t]{beamer}
+      \usetheme[author,date,title,page,hidelogo]{lines}
+    \end{lstlisting}
+  \end{block}
+  Options select content of footline (defaults to \verb![author,page]!):
+  \begin{itemize}
+  \item \verb!author! / \verb!hideauthor!
+  \item \verb!institute! / \verb!hideinstitute!
+  \item \verb!date! / \verb!hidedate!
+  \item \verb!title! / \verb!hidetitle!
+  \item \verb!page! / \verb!hidepage!
+  \item \verb!logo! / \verb!hidelogo!
+  \end{itemize}
+\end{frame}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 
+\section{Outer theme}
+
+\begin{frame}[fragile]{Frame title line}
+  \begin{block}{Thin line respecting page margins}
+    \verb!\setbeamertemplate{frametitle line}[text][0.5pt]!
+  \end{block}
+  \begin{block}{Thick line}
+    \verb!\setbeamertemplate{frametitle line}[text][3pt]!
+  \end{block}
+  \begin{block}{Line over full page}
+    \verb!\setbeamertemplate{frametitle line}[page][1pt]!
+  \end{block}
+  \begin{block}{Color}
+    \verb!\setbeamercolor{frametitle line}{fg=blue}!
+  \end{block}
+\end{frame}
+
+\begin{frame}[fragile]{Frame title}
+  \begin{block}{Title with logo}
+    \verb!\setbeamertemplate{frametitle}[boxlinelogo]!
+  \end{block}
+  \begin{block}{Title without logo}
+    \verb!\setbeamertemplate{frametitle}[boxline]!
+  \end{block}
+  \begin{block}{Color}
+    \verb!\setbeamercolor{frametitle}{fg=blue, bg=white}!
+  \end{block}
+\end{frame}
+
+\begin{frame}[fragile]{Footline}
+  \begin{block}{No footline}
+    \verb!\setbeamertemplate{footline}[default]!
+  \end{block}
+\end{frame}
+
+\begin{frame}[fragile]{Footline line}
+  \begin{block}{Thin line respecting page margins}
+    \verb!\setbeamertemplate{footline line}[text][0.5pt]!
+  \end{block}
+  \begin{block}{Thick line}
+    \verb!\setbeamertemplate{footline line}[text][3pt]!
+  \end{block}
+  \begin{block}{Line over full page}
+    \verb!\setbeamertemplate{footline line}[page][1pt]!
+  \end{block}
+  \begin{block}{Color}
+    \verb!\setbeamercolor{footline line}{fg=black}!
+  \end{block}
+\end{frame}
+
+\begin{frame}[fragile]{Footline separator}
+  \begin{block}{Vertical line}
+    \verb!\setbeamertemplate{footline separator}[text][0.5pt]!
+  \end{block}
+  \begin{block}{Full height vertical line}
+    \verb!\setbeamertemplate{footline separator}[full][0.5pt]!
+  \end{block}
+  \begin{block}{Just space}
+    \verb!\setbeamertemplate{footline separator}[space]!
+  \end{block}
+  \begin{block}{Color}
+    \verb!\setbeamercolor{footline separator}{fg=black}!
+  \end{block}
+\end{frame}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 
+\section{Inner theme}
+
+\begin{frame}[fragile]{Itemize and enumerate}
+  \begin{block}{Itemize symbol}
+    \verb!\setbeamertemplate{itemize item}[arrow]!
+  \end{block}
+  \begin{block}{Enumerate symbol}
+    \verb!\setbeamertemplate{enumerate item}[default]!
+  \end{block}
+  One of
+  \begin{itemize}
+  \item \verb!default!
+  \item \verb!arrow! (itemize only)
+  \item \verb!triangle! (itemize only)
+  \item \verb!circle!
+  \item \verb!square!
+  \item \verb!ball!
+  \end{itemize}
+\end{frame}
+
+\begin{frame}[fragile]{Title page}
+  \begin{block}{Left adjusted}
+    \verb!\setbeamertemplate{title page}[leftlines]!
+  \end{block}
+  \begin{block}{Centered}
+    \verb!\setbeamertemplate{title page}[centerlines]!
+  \end{block}
+\end{frame}
+
+\begin{frame}[fragile]{Title page logo}
+  \begin{block}{In preamble --- can be more than a single image!}
+    \verb!\titlelogo{\includegrapjics[height=6ex]{ourlogo}}!
+  \end{block}
+  \begin{block}{Line below logo is the same as for frame titles}
+    \verb!\setbeamertemplate{frametitle line}[text][0.5pt]!
+  \end{block}
+\end{frame}
+
+\begin{frame}[fragile]{Title page graphic}
+  \begin{block}{In preamble --- can be more than a single image!}
+    \verb!\titlegraphic{\includegrapjics[width=\textwidth]{amazingimage}}!
+  \end{block}
+  \begin{block}{Line below title graphic}
+    \verb!\setbeamertemplate{title page graphic line}[default][1.5ex]!
+  \end{block}
+  \begin{block}{Color}
+    \verb!\setbeamercolor{title page graphic line}{fg=red}!
+  \end{block}
+\end{frame}
+
+\begin{frame}[fragile]{Title page title and subtitle}
+  \begin{block}{In preamble}
+    \verb!\title{The titel of my talk}!\\
+    \verb!\subtitle{and whatever}!\\
+  \end{block}
+  \begin{block}{Color/Font}
+    \verb!\setbeamercolor{title}{fg=black}!
+  \end{block}
+  \begin{block}{Line below title and subtitle}
+    \verb!\setbeamertemplate{title page title line}[default][0.2ex]!
+  \end{block}
+  \begin{block}{Color}
+    \verb!\setbeamercolor{title page title line}{fg=red}!
+  \end{block}
+\end{frame}
+
+\begin{frame}[fragile]{Title page: authors}
+  \begin{block}{In preamble}
+    \verb!\author{Mary Hagedorn\inst{1} \and Walter Heiligenberg\inst{2}}!
+  \end{block}
+  \begin{block}{Author separator}
+    \verb!\setbeamertemplate{title page author and}[line]!
+  \end{block}
+  One of
+  \begin{itemize}
+  \item \verb!space!
+  \item \verb!comma!
+  \item \verb!line! (a vertical line)
+  \item \verb!and!  (an '\&')
+  \end{itemize}
+  \begin{block}{Color/Font}
+    \verb!\setbeamercolor{author}{fg=black}!
+  \end{block}
+\end{frame}
+
+\begin{frame}[fragile]{Title page: institutes}
+  \begin{block}{In preamble}
+    \verb!\institute{\inst{1}Somewhere \and \inst{2}Somewhere else}!
+  \end{block}
+  \begin{block}{Institutes separator}
+    \verb!\setbeamertemplate{title page institute and}[line]!
+  \end{block}
+  One of
+  \begin{itemize}
+  \item \verb!default! (a linebreak)
+  \item \verb!space!
+  \item \verb!comma!
+  \item \verb!line! (a vertical line)
+  \end{itemize}
+  \begin{block}{Color/Font}
+    \verb!\setbeamercolor{institute}{fg=black}!
+  \end{block}
+\end{frame}
+
+\begin{frame}[fragile]{Title page: date}
+  \begin{block}{In preamble}
+    \verb!\date[2020]{ICN 2020}!
+  \end{block}
+  \begin{block}{Font}
+    \verb!\setbeamerfont{date}{size=\normalsize}!
+  \end{block}
+  \begin{block}{Color}
+    Same as for institutes.
+  \end{block}
+\end{frame}
+
+\begin{frame}[fragile]{Section page}
+\end{frame}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 
+\section[Introduction]{Introduction of my talk with a really long title}
+
+\begin{frame}{First slide}
+  Just some simple text.
+  \pause
+  And some more text later on.
+
+  \structure<+->{A header}
+
+  And we say something \alert{alerting}. 
+\end{frame}
+
+\begin{frame}{Second slide}
+  \begin{itemize}
+  \item<1-> Something
+  \item<1-> \alert{important}
+  \item<2> is here.
+    \note<2>{What did I want to say?}
+  \item<3-> to be said.
+  \end{itemize}
+\end{frame}
+
+
+\begin{frame}{Alternative second slide}
+  % See 9.6.4 Incremental specifications in the beamer manual
+  % for the special meaning of '+' and '.':
+  \begin{itemize}[<+->]
+  \item \alert<.>{Really} something
+  \item<+-| alert@+>{important}
+  \item is here.
+  \end{itemize}
+\end{frame}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+\section[results]{My main results}
+
+\begin{frame}{Third slide}
+  \begin{block}{Some block}
+    Block text.
+  \end{block}
+  \begin{alertblock}{Careful!}
+    Consider this.
+  \end{alertblock}
+  \begin{example}
+    An example box.
+  \end{example}
+\end{frame}
+
+\begin{frame}{Fifth slide}
+  \begin{definition}
+    A definition box.
+  \end{definition}
+  \begin{proof}
+    A proof box.
+  \end{proof}
+\end{frame}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+\section[summary]{Let's summarize}
+
+\begin{frame}{Summary}
+  \begin{enumerate}
+  \item First issue
+  \item Second issue
+  \item Third issue
+  \end{enumerate}
+\end{frame}
+
+\end{document}
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%