A.2.1:4.9 - Source Context Shorthand
Holder#Role:Context@Window is source notation, not the assignment ontology. Apply E.10.ROLE to recover the system-role kind or another meaning. Recover the object denoted by Context and its direct relation separately. It can be an actual system or Work locus, a claim scope, or a selected BoundedModelUseStructure; these have different kinds and uses.
If one assignment species genuinely depends on a structure or locus, its direct pattern declares that participant and stronger identity law. Otherwise keep the recovered object in the receiving assertion or use; never invent a generic context participant.