diff -r 2643fb0f7bbc -r 81281f49aeb4 src/source/appextend.rst
--- a/src/source/appextend.rst	Fri May 25 09:06:35 2018 +0200
+++ b/src/source/appextend.rst	Fri May 25 14:28:29 2018 +0200
@@ -8,4 +8,9 @@
     :maxdepth: 1
 
     howto-adapter
+    howto-skin
+    howto-template
+    howto-renderer
     howto-portlet
+    howto-paragraph
+    howto-content