diff --git a/Documentation/MITKDoxygenLayout.xml b/Documentation/MITKDoxygenLayout.xml
index 19afb000f9..faf001d5d6 100644
--- a/Documentation/MITKDoxygenLayout.xml
+++ b/Documentation/MITKDoxygenLayout.xml
@@ -1,188 +1,193 @@
 <doxygenlayout version="1.0">
   <!-- Navigation index tabs for HTML output -->
   <navindex>
-    <tab type="mainpage" visible="yes" title=""/>
-    <tab type="pages" visible="yes" title="" intro=""/>
-    <tab type="modules" visible="yes" title="MITK API Documentation" intro="The following documentation is available for the MITK API"/>
-    <tab type="namespaces" visible="yes" title="">
-      <tab type="namespacelist" visible="yes" title="" intro=""/>
-      <tab type="namespacemembers" visible="yes" title="" intro=""/>
+    <tab type="mainpage" visible="yes" title="Portal"/>
+    <tab type="pages" visible="no" title="" intro=""/>
+    <tab type="user" url="@ref Overview" title="Overview"/>
+    <tab type="user" url="@ref UserManual" title="User's guide"/>
+    <tab type="user" url="@ref DeveloperManual" title="Developer's guide"/>
+    <tab type="usergroup" title="MITK API Documentation">
+      <tab type="modules" visible="yes" title="Groups" intro="Here is a list of all groups:"/>
+      <tab type="namespaces" visible="yes" title="">
+        <tab type="namespacelist" visible="yes" title="" intro=""/>
+        <tab type="namespacemembers" visible="yes" title="" intro=""/>
+      </tab>
+      <tab type="classes" visible="yes" title="">
+        <tab type="classlist" visible="yes" title="" intro=""/>
+        <tab type="classindex" visible="$ALPHABETICAL_INDEX" title=""/>
+        <tab type="hierarchy" visible="yes" title="" intro=""/>
+        <tab type="classmembers" visible="yes" title="" intro=""/>
+      </tab>
+      <tab type="files" visible="yes" title="">
+        <tab type="filelist" visible="yes" title="" intro=""/>
+        <tab type="globals" visible="yes" title="" intro=""/>
+      </tab>
+      <tab type="dirs" visible="yes" title="" intro=""/>
+      <tab type="examples" visible="yes" title="" intro=""/>
     </tab>
-    <tab type="classes" visible="yes" title="">
-      <tab type="classlist" visible="yes" title="" intro=""/>
-      <tab type="classindex" visible="$ALPHABETICAL_INDEX" title=""/>
-      <tab type="hierarchy" visible="yes" title="" intro=""/>
-      <tab type="classmembers" visible="yes" title="" intro=""/>
-    </tab>
-    <tab type="files" visible="yes" title="">
-      <tab type="filelist" visible="yes" title="" intro=""/>
-      <tab type="globals" visible="yes" title="" intro=""/>
-    </tab>
-    <tab type="dirs" visible="yes" title="" intro=""/>
-    <tab type="examples" visible="yes" title="" intro=""/>
   </navindex>
 
   <!-- Layout definition for a class page -->
   <class>
     <briefdescription visible="yes"/>
     <includes visible="$SHOW_INCLUDE_FILES"/>
     <inheritancegraph visible="$CLASS_GRAPH"/>
     <collaborationgraph visible="$COLLABORATION_GRAPH"/>
     <allmemberslink visible="yes"/>
     <memberdecl>
       <nestedclasses visible="yes" title=""/>
       <publictypes title=""/>
       <publicslots title=""/>
       <signals title=""/>
       <publicmethods title=""/>
       <publicstaticmethods title=""/>
       <publicattributes title=""/>
       <publicstaticattributes title=""/>
       <protectedtypes title=""/>
       <protectedslots title=""/>
       <protectedmethods title=""/>
       <protectedstaticmethods title=""/>
       <protectedattributes title=""/>
       <protectedstaticattributes title=""/>
       <packagetypes title=""/>
       <packagemethods title=""/>
       <packagestaticmethods title=""/>
       <packageattributes title=""/>
       <packagestaticattributes title=""/>
       <properties title=""/>
       <events title=""/>
       <privatetypes title=""/>
       <privateslots title=""/>
       <privatemethods title=""/>
       <privatestaticmethods title=""/>
       <privateattributes title=""/>
       <privatestaticattributes title=""/>
       <friends title=""/>
       <related title="" subtitle=""/>
       <membergroups visible="yes"/>
     </memberdecl>
     <detaileddescription title=""/>
     <memberdef>
       <inlineclasses title=""/>
       <typedefs title=""/>
       <enums title=""/>
       <constructors title=""/>
       <functions title=""/>
       <related title=""/>
       <variables title=""/>
       <properties title=""/>
       <events title=""/>
     </memberdef>
     <usedfiles visible="$SHOW_USED_FILES"/>
     <authorsection visible="yes"/>
   </class>
 
   <!-- Layout definition for a namespace page -->
   <namespace>
     <briefdescription visible="yes"/>
     <memberdecl>
       <nestednamespaces visible="yes" title=""/>
       <classes visible="yes" title=""/>
       <typedefs title=""/>
       <enums title=""/>
       <functions title=""/>
       <variables title=""/>
       <membergroups visible="yes"/>
     </memberdecl>
     <detaileddescription title=""/>
     <memberdef>
       <inlineclasses title=""/>
       <typedefs title=""/>
       <enums title=""/>
       <functions title=""/>
       <variables title=""/>
     </memberdef>
     <authorsection visible="yes"/>
   </namespace>
 
   <!-- Layout definition for a file page -->
   <file>
     <briefdescription visible="yes"/>
     <includes visible="$SHOW_INCLUDE_FILES"/>
     <includegraph visible="$INCLUDE_GRAPH"/>
     <includedbygraph visible="$INCLUDED_BY_GRAPH"/>
     <sourcelink visible="yes"/>
     <memberdecl>
       <classes visible="yes" title=""/>
       <namespaces visible="yes" title=""/>
       <defines title=""/>
       <typedefs title=""/>
       <enums title=""/>
       <functions title=""/>
       <variables title=""/>
       <membergroups visible="yes"/>
     </memberdecl>
     <detaileddescription title=""/>
     <memberdef>
       <inlineclasses title=""/>
       <defines title=""/>
       <typedefs title=""/>
       <enums title=""/>
       <functions title=""/>
       <variables title=""/>
     </memberdef>
     <authorsection/>
   </file>
 
   <!-- Layout definition for a group page -->
   <group>
     <briefdescription visible="yes"/>
     <groupgraph visible="$GROUP_GRAPHS"/>
     <memberdecl>
       <nestedgroups visible="yes" title=""/>
       <dirs visible="yes" title=""/>
       <files visible="yes" title=""/>
       <namespaces visible="yes" title=""/>
       <classes visible="yes" title=""/>
       <defines title=""/>
       <typedefs title=""/>
       <enums title=""/>
       <enumvalues title=""/>
       <functions title=""/>
       <variables title=""/>
       <signals title=""/>
       <publicslots title=""/>
       <protectedslots title=""/>
       <privateslots title=""/>
       <events title=""/>
       <properties title=""/>
       <friends title=""/>
       <membergroups visible="yes"/>
     </memberdecl>
     <detaileddescription title=""/>
     <memberdef>
       <pagedocs/>
       <inlineclasses title=""/>
       <defines title=""/>
       <typedefs title=""/>
       <enums title=""/>
       <enumvalues title=""/>
       <functions title=""/>
       <variables title=""/>
       <signals title=""/>
       <publicslots title=""/>
       <protectedslots title=""/>
       <privateslots title=""/>
       <events title=""/>
       <properties title=""/>
       <friends title=""/>
     </memberdef>
     <authorsection visible="yes"/>
   </group>
 
   <!-- Layout definition for a directory page -->
   <directory>
     <briefdescription visible="yes"/>
     <directorygraph visible="yes"/>
     <memberdecl>
       <dirs visible="yes"/>
       <files visible="yes"/>
     </memberdecl>
     <detaileddescription title=""/>
   </directory>
 </doxygenlayout>