--- a/src/slope.h	Wed Apr 04 00:32:40 2007 +0000
+++ b/src/slope.h	Wed Apr 04 01:35:16 2007 +0000
@@ -1,5 +1,7 @@
 /* $Id$ */
 
+/** @file slope.h */
+
 #ifndef SLOPE_H
 #define SLOPE_H