Service Dependency - Service v/s WorkItem

Topics: CAB & Smart Client Software Factory
Mar 15, 2007 at 12:55 PM
ModuleInit class declares a ServiceDependency on a WorkItem. What is the difference between this and a ServiceDependency on a normal class attributed as a Service. What is the significance/need for the former, Also, in the former case, does the WorkItem actually correspond to the RootWorkItem?