Changed wording of UndoError docstring from "an attempt was made to undo an...

Changed wording of UndoError docstring from "an attempt was made to undo an undoable transaction" to "an attempt was made to undo a non-undoable transaction"

src/ZODB/POSException.py

@@ -84,8 +84,8 @@
 ##############################################################################
 '''BoboPOS-defined exceptions
 
-$Id: POSException.py,v 1.5 2000/05/24 20:53:34 shane Exp $'''
-__version__='$Revision: 1.5 $'[11:-2]
+$Id: POSException.py,v 1.6 2001/02/08 22:25:59 chrism Exp $'''
+__version__='$Revision: 1.6 $'[11:-2]
 
 
 class POSError(Exception):
@@ -115,7 +115,7 @@ class VersionLockError(VersionError, TransactionError):
     been modified in an unsaved version"""
 
 class UndoError(POSError):
-    """An attempt was made to undo an undoable transaction.
+    """An attempt was made to undo a non-undoable transaction.
     """
 
 class StorageError(POSError):