diff -r c712e66532d8 -r 478ba329ffb7 lemon/dfs.h
--- a/lemon/dfs.h	Tue Jul 18 17:00:24 2006 +0000
+++ b/lemon/dfs.h	Wed Jul 19 15:13:24 2006 +0000
@@ -701,7 +701,7 @@
     ///For a node \c v it returns the 'previous node'
     ///of the %DFS tree,
     ///i.e. it returns the last but one node from a %DFS path from the
-    ///root(a) to \c /v.
+    ///root(s) to \c v.
     ///It is INVALID if \c v is unreachable from the root(s) or
     ///if \c v itself a root.
     ///The %DFS tree used here is equal to the %DFS