The GetDocumentRevisionPublishability method of the IEFCommonUIApplication2 interface uses this enumeration from SchemaCompInterfaces.tlb.
enum eRevisionPublishability {
erpNotSet = 0,
erpNew = 1,
erpPublishableNotNew = 2,
erpFrozen = 3,
erpInWorkflow = 4,
erpOutofOrder = 5
} eRevisionPublishablity;