--- a/src/mixer.cpp	Mon May 05 12:35:38 2008 +0000
+++ b/src/mixer.cpp	Wed May 07 21:09:51 2008 +0000
@@ -1,6 +1,6 @@
 /* $Id$ */
 
-/** @file mixer.cpp*/
+/** @file mixer.cpp Mixing of sound samples. */
 
 #include "stdafx.h"
 #include "openttd.h"