The "namespace" variable is renamed "api.namespace". Backward
compatibility is ensured, but upgrading is recommended.
+** Variable parse.error
+
+ The variable error controls the verbosity of error messages. The
+ use of the %error-verbose directive is deprecated in favor of
+ %define parse.error "verbose".
+
* Changes in version 2.5 (????-??-??):
** IELR(1) and Canonical LR(1) Support