Whenever data is consolidated into a tool domain, such as PFD, a shared object is created in the central DWShared domain. This object only instantiates one or two key interfaces and relies on the relationship (SPFComprisedOf) to point to the real data.
A shared document is created in the DWShared domain and linked to the full document that is created in the publish domain. The document master is also related to the tool signature, which is related to the plant and tool that the tool signature represents.