I saved my model to my r9 mart. I close my model and I get a Mart Offline window. I have three options in the Save To field, Offline, Detach and Close. What do these mean

Resolution:

Offline
Saves the model offline to the local directory.  You can work on the offline model without connecting to the mart. Every update to the offline model is recorded until you rebind the model to the Mart.

NOTE:  When you finish working on the offline mart model, you can rebind it to Mart. When the model is saved online, the status of the model is changed from Offline Mart Model to Online Mart Model.

Detach
Copies the model and saves the copy to the local directory. The detached model is not connected to the mart and it is considered as a non-mart model.

Close
Closes the model.