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-rw-r--r--generic/proof-config.el2
1 files changed, 1 insertions, 1 deletions
diff --git a/generic/proof-config.el b/generic/proof-config.el
index 780576b2..1a45335c 100644
--- a/generic/proof-config.el
+++ b/generic/proof-config.el
@@ -99,7 +99,7 @@ terminator somewhere nearby. Electric!"
(defcustom proof-toolbar-enable t
"*If non-nil, display Proof General toolbar for script buffers.
-NB: the toolbar is only available with XEmacs."
+NB: the toolbar is only available with XEmacs and GNU Emacs>=21."
:type 'boolean
:set 'proof-set-value
:group 'proof-user-options)