diff --git a/nsis/xdocs/customizing.xml b/nsis/xdocs/customizing.xml
index 1ff1ac2a..27525d76 100644
--- a/nsis/xdocs/customizing.xml
+++ b/nsis/xdocs/customizing.xml
@@ -255,6 +255,25 @@ CreateShortCut "${PROJECT_STARTMENU_FOLDER}\User Guide.lnk" "http://www.myapp.nf
     </section>
 
     <section name="Custom Templates">
+      <p>
+        You can of course provide your own versions of the <code>project.jelly</code>
+        and <code>setup.jelly</code> templates. This requires you to understand NSIS
+        and a little bit of <a href="http://jakarta.apache.org/commons/jelly/">jelly</a>
+        as well.
+      </p>
+      <p>
+        To use your own templates, override the <code>maven.nsis.project.template</code>
+        and <code>maven.nsis.setup.template</code> variables.
+      </p>
+      <p>
+        The templates are expected to be well formed Jelly scripts, i.e. valid
+        XML documents.
+      </p>
+      <p>
+        If you do provide your own templates, you have complete control over
+        the way the installation process will work. You will also be able to
+        completely ruin it as well :-).
+      </p>
     </section>
  </body>
 </document>