Added CD description in RASD

1.RASD/RASD.lyx

@@ -4490,6 +4490,14 @@ Here it is shown a class diagram in order to give a static sight of the
  in this picture.
 \end_layout
 
+\begin_layout Standard
+This diagram is intended as a starting draft to be expanded further in the
+ design phase: moreover, it doesn't represent the final class infrastructure
+ which will be used in our system.
+ Finally, this diagram doesn't include the classes that will be used in
+ the Mobile/Web applications.
+\end_layout
+
 \begin_layout Standard
 \begin_inset space \quad{}
 \end_inset