It is as compatilbe as it could be. From the users point of view it is not much moren then a nice Workbench replacement with some tolls and demos to play around. Think of it like DirOpus Megelan: gives an enhenced desktop and can be either run as full WB replacement or be started from WB. It has problems with MagicMenu though. Oh and it does not seem to like 68060, at least I couldnt`t get it to run on one.