This interface is added to support the Revise command.
Before version 3.7, tool-published documents were revised during the publish operation. Tools now have the option either to use SmartPlant Foundation revisioning schemes or to supply revision numbers. The tool-supplied revision numbers are not managed and do not follow a scheme.
For the tools that use SmartPlant Foundation revisioning schemes, document revisioning happens during the publish operation only. A requirement has been raised to decouple revisioning from publish operation. In other words tool users should be allowed to revise documents without publish.
The above requirements involve functionality in integration software to allow tools to use SmartPlant Foundation-managed revisioning schemes and to be able to revise documents between publishes. (See Revise Command for details about the Revise command.)
The separation of revise from publish requires a separate Revise command to revise documents and to store revision numbers in the tool database. A tool that supports the Revise command should implement IEFAdpater3 interface, and the SupportsFeature method for SPFRevisions (ToolFeatures entry) should return TRUE.