--- a/doc/build.txt	Fri May 18 10:27:42 2007 -0700
+++ b/doc/build.txt	Fri May 18 11:13:57 2007 -0700
@@ -16,8 +16,9 @@
 the right libraries. This saves you the pain of having to
 setup environment variables to point to the right libraries.
 
-(Note:  An experimental, alternative build system is described
-in build-waf.txt)
+(Note:  An alternative build system (Waf) is being
+evaluated in the development branch of ns-3-dev on our server
+only (i.e., not in the release tarballs)-- see doc/build-waf.txt)
 
 1) Options
 ----------