--- a/src/ai/ai.cpp	Fri Apr 25 02:15:34 2008 +0000
+++ b/src/ai/ai.cpp	Mon May 26 20:45:25 2008 +0000
@@ -1,5 +1,7 @@
 /* $Id$ */
 
+/** @file ai.cpp Base for all AIs. */
+
 #include "../stdafx.h"
 #include "../openttd.h"
 #include "../variables.h"