I think you could also issue the Revert To Saved F_Code. I don't have the F_Codes in front of me so I can't verify it exactly, but there should be one for every menu command, at least. So there should be one for Revert to Saved. This is a way for the API to execute commands that don't have a specific API call. You can also use F_Codes to check which command has been executed and caught in a notification.
Or you can close without saving and open again... I presume Revert To Saved is a macro to do just that. And I guess it would give you more control, such that you can verify exactly what the obj ID is for the document. So I guess Rick's answer is probably the best one. But you should know about F_Codes, anyway... cud
