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+\ifdefined\ishandout
+\documentclass[de, handout]{CELbeamer}
+\else
+\documentclass[de]{CELbeamer}
+\fi
+
+%
+%
+% CEL Template
+%
+%
+
+\newcommand{\templates}{preambles}
+\input{\templates/packages.tex}
+\input{\templates/macros.tex}
+
+\grouplogo{CEL_logo.pdf}
+
+\groupname{Communication Engineering Lab (CEL)}
+\groupnamewidth{80mm}
+
+\fundinglogos{}
+
+%
+%
+% Custom commands
+%
+%
+
+\input{lib/latex-common/common.tex}
+\pgfplotsset{colorscheme/rocket}
+
+\newcommand{\res}{src/2025-12-19/res}
+
+% \tikzstyle{every node}=[font=\small]
+% \captionsetup[sub]{font=small}
+
+%
+%
+% Document setup
+%
+%
+
+\usepackage{tikz}
+\usepackage{tikz-3dplot}
+\usetikzlibrary{spy, external, intersections, positioning}
+%\tikzexternalize[prefix=build/]
+
+\usepackage{pgfplots}
+\pgfplotsset{compat=newest}
+\usepgfplotslibrary{fillbetween}
+
+\usepackage{enumerate}
+\usepackage{listings}
+\usepackage{subcaption}
+\usepackage{bbm}
+\usepackage{multirow}
+
+\usepackage{xcolor}
+
+\title{WT Tutorium 4}
+\author[Tsouchlos]{Andreas Tsouchlos}
+\date[]{19. Dezember 2025}
+
+%
+%
+% Document body
+%
+%
+
+\begin{document}
+
+\begin{frame}[title white vertical, picture=images/IMG_7801-cut]
+    \titlepage
+\end{frame}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+\section{Aufgabe 1}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+\subsection{Theorie Wiederholung}
+
+\begin{frame}
+    \frametitle{sasdf}
+\end{frame}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+\subsection{Aufgabe}
+
+\begin{frame}
+    \frametitle{sasdf}
+\end{frame}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+\section{Aufgabe 2}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+\subsection{Theorie Wiederholung}
+
+\begin{frame}
+    \frametitle{sasdf}
+\end{frame}
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+\subsection{Aufgabe}
+
+\begin{frame}
+    \frametitle{sasdf}
+\end{frame}
+
+\end{document}
+