diff --git a/Makefile b/Makefile
index b2a9918..a3bdd6b 100644
--- a/Makefile
+++ b/Makefile
@@ -19,7 +19,9 @@ else
     src/06-tetris.pod \
     src/07-music_and_sound.pod \
     src/08-CPAN.pod \
-    src/09-profiling.pod 
+    src/09-profiling.pod \
+    src/10-XS_effects.pod \
+    src/11-PDL_OpenGL.pod
  
 endif
 
diff --git a/src/10-XS_effects.pod b/src/10-XS_effects.pod
index 56afdfc..d242fb9 100644
--- a/src/10-XS_effects.pod
+++ b/src/10-XS_effects.pod
@@ -1,20 +1,15 @@
-=head0 The Basics
+=head0 Pixel Effects
 
-Making a screen:
+=head1 Ripple Effect
 
-=begin programlisting
+Lets try this from perl.
 
-    use SDL:
-    use SDLx::App;
+=head2 Color in Detail
 
-    SDLx::App->new();
-  
-    sleep( 2 );
-    
-=end programlisting
+Fiddling Bits.
 
-This makes a screen as below:
+=head1 Moving it to XS
 
-WIP
+Making it usable at least.
 
 =for vim: spell
diff --git a/src/11-PDL_OpenGL.pod b/src/11-PDL_OpenGL.pod
index 56afdfc..fbe742b 100644
--- a/src/11-PDL_OpenGL.pod
+++ b/src/11-PDL_OpenGL.pod
@@ -1,20 +1,27 @@
-=head0 The Basics
+=head0 Additional Modules
 
-Making a screen:
+=head1 PDL
 
-=begin programlisting
+Fast calculations in Perl.
 
-    use SDL:
-    use SDLx::App;
+=head2 Using the Piddle
 
-    SDLx::App->new();
-  
-    sleep( 2 );
-    
-=end programlisting
+Some example here
 
-This makes a screen as below:
+=head2 Connecting to SDL
 
-WIP
+Connect the SDL here.
+
+=head1 OpenGL
+
+Perl OpenGL
+
+=head2 Texturing
+
+Using textures for OpenGL.
+
+=head3 SDL surfaces as textures
+
+Example.
 
 =for vim: spell