diff --git a/chapter_03.tex b/chapter_03.tex
index 52d9ff1..8351372 100644
--- a/chapter_03.tex
+++ b/chapter_03.tex
@@ -1,2 +1,2 @@
-\section{High level simulations}
-
+\section{High level simulations}\
+textetxttext
diff --git a/chapter_04.aux b/chapter_04.aux
index 08de2d7..5430d93 100644
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diff --git a/drawio/LMS_logic.drawio b/drawio/LMS_logic.drawio
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diff --git a/main.tex b/main.tex
index 5d019d6..0a5c67a 100644
--- a/main.tex
+++ b/main.tex
@@ -16,6 +16,8 @@
 \usepackage{amsmath,amsthm,amssymb} % richtige Mathematik
 \usepackage[a4paper,margin=2.5cm]{geometry} %Seitenmaße
 \usepackage{setspace}
+\usepackage{listings}
+\usepackage{minted}
 
 
 \addbibresource{literature.bib}