voeg subsection toe voor charlie om te beginnen

diff --git a/2approach.tex b/2approach.tex
index 567dba6..b0e834c 100644 (file)
--- a/2approach.tex
+++ b/2approach.tex
@@ -37,3 +37,5 @@ to the SUT.
 \end{itemize}
 
 \subsubsection{Quality in use}
+
+\subsection{Levels and types of testing}