Index: test_plan.xml
===================================================================
--- test_plan.xml	(revision 1048910)
+++ test_plan.xml	(working copy)
@@ -83,7 +83,15 @@
 	 Note that delay overrides start-time, and duration over-rides end-time.</p>
 </subsection>
 
-<subsection name="&sect-num;.2 Controllers" anchor="controllers">
+<subsection name="&sect-num;.2 Test Fragments" anchor="test_fragments">
+<p>Test Fragment element is a special type of <a href="#controllers">controller</a> that
+exist on the Test Plan tree at the same level as the Thread Group element.  They are distinguised
+from the Thread Group in that they are not executed with the Test Plan unless they are 
+reference by either a <complink name="Module Controller"/> or an <complink name="Include_Controller"/>.
+</p>
+<p>This element is purely for code re-use within Test Plans and was introduced in Version 2.5</p>
+</subsection>
+<subsection name="&sect-num;.3 Controllers" anchor="controllers">
 
 <p>
 JMeter has two types of Controllers: Samplers and Logical Controllers.
Index: component_reference.xml
===================================================================
--- component_reference.xml	(revision 1048910)
+++ component_reference.xml	(working copy)
@@ -2025,13 +2025,16 @@
 <component name="Include Controller" index="&sect-num;.2.14"  width="419" height="118" screenshot="includecontroller.png">
 	<description>
 <p>
-The include controller is designed to use an external jmx file. To use it, add
-samples to a simple controller, then save the simple controller as a jmx file.
-The file can then be used in a test plan.
-The included test plan must not include a Thread Group.
-It should only contain the Simple Controller and any samplers, controllers etc below it.
+The include controller is designed to use an external jmx file. To use it, create a Test Fragment 
+underneath a Test Plan and add any desired samplers, controller etc below it.  Then save the Test Plan.  
+The file is now ready to be included as part of other Test Plans.
 </p>
 <p>
+For convience purposes, a Thread Group can also be added in the external JMX file for debugging purposes.
+A Module Controller can be used to reference the Test Fragment.  The Thread Group will be ignored during the 
+include process.
+</p>
+<p>
 If the test uses a Cookie Manager or User Defined Variables, these should be placed in the top-level
 test plan, not the included file, otherwise they are not guaranteed to work.
 </p>