Add a "AutoFormat" member to the DocumentModificationType En

Would it be possible to add a "AutoFormat" member to the DocumentModificationType Enumeration. This would allow for easier identification of Code Format/Beatification activities within the undo/redo operation allowing the auto formatting process to be suspended on the undo/redo of text changes due to auto formatting. Currently I am forced to use the "Custom" member and have other needs for the use of that member.

Thanks