Status: IN
Decorator achieves complete compositional characterization across three orthogonal dimensions: its embellishment abstraction is domain-independent (validated beyond UI in I/O streams, semantic actions, attribute tags), its practical scalability is engineering-enabled (forwarding defaults convert theoretical elegance to practical viability by avoiding operations-times-decorators class growth), and its composition-order sensitivity is semantically grounded (ordering follows from extension-not-replacement via super-call chaining, not arbitrary convention) — making Decorator the most thoroughly characterized composition mechanism in the GoF catalog.
Three orthogonal characterizations (domain generality, scalability mechanism, ordering semantics) fully characterize Decorator as composition mechanism
Depends on (SL): decorator-domain-generality-validates-embellishment-abstraction, decorator-forwarding-default-enables-composition-scaling, decorator-ordering-grounded-in-extension-semantics