Revisions allow you to track differences between multiple versions of your content, and revert back to older versions.
Executive Summary: This use case is identical to IAAS-8 except that the calling application should not have to handle common exceptions.
No effort is proposed at this time.
We are not aware of an implementation that satisfies this use case. Current XSEDE users are working around this issue as described in use case IAAS-08 and getting a great deal of research done.