update
diff --git a/prepare.xml b/prepare.xml
index cb0ff6e..b6d6b12 100644
--- a/prepare.xml
+++ b/prepare.xml
@@ -28,18 +28,23 @@
 
 The original of this snippet is maintained in the antlib-common project. 
 -->
-<project xmlns:unless="ant:unless" xmlns:if="ant:if">
+<project default="bootstrap" xmlns:unless="ant:unless" xmlns:if="ant:if">
 
+  <!-- AntLib-common Git-URL, so we could 'svn:external' that manually. -->
   <property name="antlib.common.git" value="https://git-wip-us.apache.org/repos/asf/ant-antlibs-common.git"/>
+  <!-- Git executable -->
   <property name="git" value="git"/>
   
+  <!-- Which released version of AntUnit to use, where to download, where to store. -->
   <property name="antunit.version" value="1.3"/>
   <property name="antunit.url" value="http://repo1.maven.org/maven2/org/apache/ant/ant-antunit/${antunit.version}/ant-antunit-${antunit.version}.jar"/>
   <property name="antunit.file" value="ant-antunit.jar"/>
 
+  <!-- Skip unnecessary tasks. -->
   <available property="common.present"  file="common" type="dir"/>
   <available property="antunit.present" file="${antunit.file}"/>
 
+
   <target name="clone-common" unless="common.present">
     <echo message="cloning antlib-common"/>
     <exec executable="${git}" taskname="git">
@@ -66,6 +71,23 @@
     <get src="${antunit.url}" dest="${antunit.file}" usetimestamp="true"/>
   </target>
   
-  <target name="update" depends="clone-common,update-common,update-prepare-script,get-antunit"/>
+  
+  <!-- Use a 'bootstrap-phase' so changes of the preparation could be catched in the same CI-cycle. -->
+  <target name="bootstrap" 
+          depends="clone-common,update-common,update-prepare-script"
+          description="Bootstraps the preparation script by cloning the antlib-common and updating this script from there."
+  >
+    <echo>Bootstrap done. Next step:</echo> 
+    <echo>  ant -f ${ant.file.name} prepare</echo>
+  </target>
+          
+  <target name="prepare" 
+          depends="get-antunit"
+          description="Prepare the build by 'preparing' the infrastructure"
+  >
+    <echo>Preparation done. Next steps:</echo>
+    <echo> ant clean distribution</echo>
+    <echo> ant -lib ${antunit.file} -lib build/lib test</echo>
+  </target>
 
 </project>
\ No newline at end of file