diff --git a/doc/reference/docbook.build b/doc/reference/docbook.build
index d33af336..7fde6b14 100644
--- a/doc/reference/docbook.build
+++ b/doc/reference/docbook.build
@@ -2,9 +2,10 @@
 <project name="DocBook" default="help" xmlns="http://nant.sf.net/release/0.85/nant.xsd">
 
   <property name="project.basedir" value="${project::get-base-directory()}" />
+  <property name="project.targetdir" value="${project.basedir}/target" />
 
   <target name="help">
-    <echo message="Avalaible tasks :" />
+    <echo message="Available tasks :" />
     <echo message=" all" />
     <echo message=" html" />
     <echo message=" html-help" />
@@ -15,16 +16,17 @@
 
   <target name="html">
     <echo message="Generating HTML format..." />
+    <mkdir dir="${project.targetdir}" />
     <!-- docbook -> html -->
-    <exec program="java" commandline='-cp "lib\saxon6-5-5\saxon.jar;lib\xslthl-2.0.0\xslthl-2.0.0.jar" com.icl.saxon.StyleSheet src/index.xml "lib\docbook-xsl-snapshot\html\springnet.xsl" highlight.xslthl.config="file:///${project.basedir}/lib/docbook-xsl-snapshot/highlighting/xslthl-config.xml"' />
+    <exec workingdir="${project.targetdir}" program="java" commandline='-cp "..\lib\saxon6-5-5\saxon.jar;..\lib\xslthl-2.0.0\xslthl-2.0.0.jar" com.icl.saxon.StyleSheet ../src/index.xml "..\lib\docbook-xsl-snapshot\html\springnet.xsl" highlight.xslthl.config="file:///${project.basedir}/lib/docbook-xsl-snapshot/highlighting/xslthl-config.xml"' />
     <!-- copy css to html dir -->
-    <copy todir="${project.basedir}\html\styles">
+    <copy todir="${project.targetdir}\html\styles">
       <fileset basedir="${project.basedir}\src\styles">
         <include name="**"/>
       </fileset>
     </copy>
     <!-- copy images to html dir -->
-    <copy todir="${project.basedir}\html\images">
+    <copy todir="${project.targetdir}\html\images">
       <fileset basedir="${project.basedir}\src\images">
         <include name="*.gif"/>
         <include name="*.svg"/>
@@ -32,7 +34,7 @@
         <include name="*.png"/>
       </fileset>
     </copy>
-    <copy todir="${project.basedir}\html\images">
+    <copy todir="${project.targetdir}\html\images">
       <fileset basedir="${project.basedir}\lib\docbook-xsl-snapshot\images">
         <include name="**"/>
       </fileset>
@@ -41,16 +43,17 @@
 
   <target name="html-help">
     <echo message="Generating HTML Help format..." />
+    <mkdir dir="${project.targetdir}" />
     <!-- docbook -> HTML Help Workshop project (.hhp) -->
-    <exec program="java" commandline='-cp "lib\saxon6-5-5\saxon.jar;lib\xslthl-2.0.0\xslthl-2.0.0.jar" com.icl.saxon.StyleSheet src/index.xml "lib\docbook-xsl-snapshot\htmlhelp\springnet.xsl" highlight.xslthl.config="file:///${project.basedir}/lib/docbook-xsl-snapshot/highlighting/xslthl-config.xml"' />
+    <exec workingdir="${project.targetdir}" program="java" commandline='-cp "..\lib\saxon6-5-5\saxon.jar;..\lib\xslthl-2.0.0\xslthl-2.0.0.jar" com.icl.saxon.StyleSheet ../src/index.xml "..\lib\docbook-xsl-snapshot\htmlhelp\springnet.xsl" highlight.xslthl.config="file:///${project.basedir}/lib/docbook-xsl-snapshot/highlighting/xslthl-config.xml"' />
     <!-- copy css to html dir -->
-    <copy todir="${project.basedir}\htmlhelp\styles">
+    <copy todir="${project.targetdir}\htmlhelp\styles">
       <fileset basedir="${project.basedir}\src\styles">
         <include name="**"/>
       </fileset>
     </copy>
     <!-- copy images to htmlhelp dir -->
-    <copy todir="${project.basedir}\htmlhelp\images">
+    <copy todir="${project.targetdir}\htmlhelp\images">
       <fileset basedir="${project.basedir}\src\images">
         <include name="*.gif"/>
         <include name="*.svg"/>
@@ -58,17 +61,17 @@
         <include name="*.png"/>
       </fileset>
     </copy>
-    <copy todir="${project.basedir}\htmlhelp\images">
+    <copy todir="${project.targetdir}\htmlhelp\images">
       <fileset basedir="${project.basedir}\lib\docbook-xsl-snapshot\images">
         <include name="**"/>
       </fileset>
     </copy>
     <!-- HTML Help Workshop project (.hhp) -> HTML Help file (.chm) -->
     <!--<readregistry property="hhc.path" key="SOFTWARE\Microsoft\HTML Help Workshop\InstallDir" hive="CurrentUser" />-->
-    <exec program="C:\Program Files\HTML Help Workshop\hhc.exe" commandline="${project.basedir}\htmlhelp\htmlhelp.hhp" failonerror="false" />
+    <exec program="C:\Program Files\HTML Help Workshop\hhc.exe" commandline="${project.targetdir}\htmlhelp\htmlhelp.hhp" failonerror="false" />
     <!-- cleanup -->
     <delete>
-      <fileset basedir="${project.basedir}\htmlhelp" >
+      <fileset basedir="${project.targetdir}\htmlhelp" >
         <include name="**/**"/>
         <exclude name="*.chm"/>
       </fileset>
@@ -77,12 +80,26 @@
 
   <target name="pdf">
     <echo message="Generating PDF format..." />
+    <mkdir dir="${project.targetdir}" />
     <!-- docbook -> fop -->
-    <exec program="java" commandline='-cp "lib\saxon6-5-5\saxon.jar;lib\xslthl-2.0.0\xslthl-2.0.0.jar" com.icl.saxon.StyleSheet -o pdf/spring-net-reference.fo src/index.xml "lib\docbook-xsl-snapshot\fo\springnet.xsl" highlight.xslthl.config="file:///${project.basedir}/lib/docbook-xsl-snapshot/highlighting/xslthl-config.xml"'/>
+    <exec workingdir="${project.targetdir}" program="java" commandline='-cp "..\lib\saxon6-5-5\saxon.jar;..\lib\xslthl-2.0.0\xslthl-2.0.0.jar" com.icl.saxon.StyleSheet -o pdf/spring-net-reference.fo ../src/index.xml "..\lib\docbook-xsl-snapshot\fo\springnet.xsl" highlight.xslthl.config="file:///${project.basedir}/lib/docbook-xsl-snapshot/highlighting/xslthl-config.xml"'/>
     <!-- fop -> pdf -->
-    <exec program="${project.basedir}\lib\fop-0.95\fop.bat" commandline='-fo "${project.basedir}\pdf\spring-net-reference.fo" -pdf "${project.basedir}\pdf\spring-net-reference.pdf"'/>
+    <exec program="${project.basedir}\lib\fop-0.95\fop.bat" commandline='-fo "${project.targetdir}\pdf\spring-net-reference.fo" -pdf "${project.targetdir}\pdf\spring-net-reference.pdf"'/>
     <!-- Delete temporary fop file -->
-    <delete file="${project.basedir}\pdf\spring-net-reference.fo"/>
+    <delete file="${project.targetdir}\pdf\spring-net-reference.fo"/>
+  </target>
+
+  <target name="clean" description="Deletes current reference doc build configuration">
+    <call target="cleanall"/>
+  </target>
+
+  <target name="cleanall" description="Deletes every format of reference docs">
+    <property name="target.dir" value="${path::combine(project::get-base-directory(),'build')}"/>
+    <echo message="Deleting all reference documentation builds from all configurations : '${project.basedir}\html'"/>
+    <delete
+            dir="${project.targetdir}"
+            if="${directory::exists(project.targetdir)}"
+            failonerror="false"/>
   </target>
 
 </project>