doxygen comment for tred.c

diff --git a/cmd/tools/tred.c b/cmd/tools/tred.c
index 3e6fa1e103fb3e9fa9c84f59d4315273c61badb7..2078433950aab6d59368a49e55a28f7227744a56 100644 (file)
--- a/cmd/tools/tred.c
+++ b/cmd/tools/tred.c
@@ -1,3 +1,8 @@
+/**
+ * @file
+ * @brief transitive reduction filter for directed graphs
+ */
+
 /*************************************************************************
  * Copyright (c) 2011 AT&T Intellectual Property
  * All rights reserved. This program and the accompanying materials