diff --git a/documentation/atb-update-tool.tex b/documentation/atb-update-tool.tex
index 5712a70..ecadbff 100644
--- a/documentation/atb-update-tool.tex
+++ b/documentation/atb-update-tool.tex
@@ -47,7 +47,7 @@ innertopmargin=20,innerbottommargin=20
 \newglossaryentry{ATBUpdateCheck}{%
     name=ATBUpdateCheck,
     description={Tool for checking ISMAS connectivity and for checking
-	the customer repository}%
+	if an update-request has been scheduled.}%
 }%
 
 \newglossaryentry{ATBUpdateGit}{%
@@ -105,8 +105,11 @@ innertopmargin=20,innerbottommargin=20
 \section{Introduction}
   
 \section{ATBUpdateCheck}
-\gls{ATBUpdateCheck}
-\gls{ISMAS}
+\gls{ATBUpdateCheck} is used for two purposes: 
+\begin{enumerate}
+    \item Check \gls{ISMAS} can be reached (network).
+    \item Check if an update has been scheduled.
+\end{enumerate}
 
 \section{ATBUpdateGit}
 \gls{ATBUpdateGit}