Modified the entry in CHANGES.

0f324090 · POTTIER Francois · 02a18bb9 · 0f324090
Commit 0f324090 authored Jul 06, 2015 by POTTIER Francois
--- a/CHANGES
+++ b/CHANGES
 2015/06/29:
-Changed the treatment of positional parameters which are now
-rewritten into named parameters of the form '_i' where 'i'
-is an integer.
+Changed the treatment of the positional keywords $i. They are now
+rewritten into variables of the form '_i' where 'i' is an integer.
+Users are advised not to use variables of this form inside semantic
+actions.

 2015/02/11:
 Added support for anonymous rules. This allows writing, e.g.,