id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc
2	FF: Implement the Undo system used in IE	Frederico Caldeira Knabben	Martin Kou	"The undo system present on browsers through execCommand is quite limited, as it doesn't take care of DOM modification (done by many features in the editor).

For IE, we have implemented a custom undo system which takes snapshots of the document area innerHTML.

The porting to Firefox is just a matter of testing and doing the necessary adjustments."	Task	closed	Normal	FCKeditor 2.5 Beta	Core : Undo & Redo		duplicate