3k-warn about parser's "ast" aliases.
diff --git a/Doc/library/parser.rst b/Doc/library/parser.rst
index 7df9251..bdd541c 100644
--- a/Doc/library/parser.rst
+++ b/Doc/library/parser.rst
@@ -34,6 +34,7 @@
replaced by "ast"; this is a legacy from the time when there was no other
AST and has nothing to do with the AST found in Python 2.5. This is also the
reason for the functions' keyword arguments being called *ast*, not *st*.
+ The "ast" functions will be removed in Python 3.0.
There are a few things to note about this module which are important to making
use of the data structures created. This is not a tutorial on editing the parse