--- a/src/os2.cpp	Wed Mar 21 13:19:01 2007 +0000
+++ b/src/os2.cpp	Wed Mar 21 15:19:33 2007 +0000
@@ -1,5 +1,7 @@
 /* $Id$ */
 
+/** @file os2.cpp */
+
 #include "stdafx.h"
 #include "openttd.h"
 #include "variables.h"