ns: doxygen comment

diff --git a/lib/common/ns.c b/lib/common/ns.c
index 456a25f8b16d5245292c2cf97d6375d7c6aba8b1..89613d5f3bf3464847715474924672ff64cf7f23 100644 (file)
--- a/lib/common/ns.c
+++ b/lib/common/ns.c
@@ -1,3 +1,8 @@
+/**
+ * @file
+ * @brief Network Simplex algorithm for ranking nodes of a DAG, @ref rank, @ref rank2
+ */
+
 /*************************************************************************
  * Copyright (c) 2011 AT&T Intellectual Property 
  * All rights reserved. This program and the accompanying materials
@@ -8,11 +13,6 @@
  * Contributors: Details at https://graphviz.org
  *************************************************************************/
 
-
-/* 
- * Network Simplex Algorithm for Ranking Nodes of a DAG
- */
-
 #include <common/render.h>
 #include <stdbool.h>