diff --git a/main.tex b/main.tex
index 11f7636..568d70b 100644
--- a/main.tex
+++ b/main.tex
@@ -25,10 +25,22 @@
 
 \usepackage{multirow}
 
+\usepackage{listing}
+
+
+
 %% For code snippets
 \usepackage{listings}
 \lstset{basicstyle=\ttfamily\footnotesize,breaklines=true}
 
+\lstdefinestyle{tree}{
+literate=
+    {├}{{\smash{\raisebox{-1ex}{\rule{1pt}{\baselineskip}}}\raisebox{0.5ex}{\rule{1ex}{1pt}}}}1 
+    {└}{{\smash{\raisebox{0.5ex}{\rule{1pt}{\dimexpr\baselineskip-1.5ex}}}\raisebox{0.5ex}{\rule{1ex}{1pt}}}}1 
+    {─}{{\raisebox{0.5ex}{\rule{1.5ex}{1pt}}}}1 
+    {│}{{\smash{\raisebox{-1ex}{\rule{1pt}{\baselineskip}}}\raisebox{0.5ex}{\rule{1ex}{0pt}}}}1 
+}
+
 %% Dit zorgt ervoor dat nieuwe paragraven niet
 %% geindenteerd worden maar met een witregel beginnen
 \usepackage{parskip}