Index: /trunk/include/VBox/vmm/pgm.h
===================================================================
--- /trunk/include/VBox/vmm/pgm.h	(revision 66022)
+++ /trunk/include/VBox/vmm/pgm.h	(revision 66023)
@@ -330,4 +330,6 @@
 /**
  * Paging mode.
+ *
+ * @note    Part of saved state.  Change with extreme care.
  */
 typedef enum PGMMODE