diff --git a/szenarien/schultraeger-en.xml b/szenarien/schultraeger-en.xml
index 58a5898..f9d2b86 100644
--- a/szenarien/schultraeger-en.xml
+++ b/szenarien/schultraeger-en.xml
@@ -62,7 +62,7 @@
 	</para>
 
 	<para>
-	  This involves implementation of an infrastructure composed of a UCS
+	  This involves the implementation of an infrastructure composed of a UCS
 	  &ucsMaster; (DC master), a &ucsBackup; (DC backup) and several &ucsSlave; (hereinafter
 	  called school server) in the individual schools.
 	</para>
@@ -217,7 +217,7 @@
 	</para>
 
 	<para> 
-	  The <guimenu>Computer room</guimenu>module allows the teacher to control the
+	  The <guimenu>Computer room</guimenu> module allows the teacher to control the
 	  pupil PCs and Internet access during a lesson. Internet access
 	  can be blocked or permitted and individual web pages can be
 	  white-listed. If a special software (iTALC) is installed
@@ -388,6 +388,7 @@
 		<listitem><uri>http://docs.univention.de/manual.html</uri> (UCS manual)</listitem>
 		<listitem><uri>http://docs.univention.de/ucsschool-manual.html</uri> (UCS@School manuals for administrators (currently only available in German))</listitem>
 		<listitem><uri>http://docs.univention.de/ucsschool-teacher-manual.html</uri> (UCS@School manuals for teachers (currently only available in German))</listitem>
+		<listitem><ulink url="http://www.univention.de/en/products/ucs/app-catalogue/app/details/kolab"/> (Kolab)</listitem>
 	  </itemizedlist>
 	</para>
   </section>