Status: OUT
Structural patterns organize into two orthogonal spectra — boundary patterns (Adapter/Facade) translating at system edges, wrapping patterns (Proxy/Decorator) augmenting within compatible hierarchies — while behavioral modification patterns add a third axis of wrapping depth (Proxy→Decorator→Strategy from access to algorithm), revealing that the GoF's Structural-Behavioral classification boundary is permeable along the wrapping dimension: structural and behavioral patterns share a common wrapping substrate.
Structural boundary/wrapping spectra and behavioral modification surface intersect at the wrapping dimension, demonstrating classification permeability
Depends on (SL): structural-patterns-boundary-vs-wrapping-spectra, skin-guts-wrapping-spectrum-completes-behavioral-modification-surface