RHY.6:10 - Architectural Rationale
The translation concerns interpreted rhythmic relations, not sign resemblance. Its granularity can be an occurrence, a phrase or a trajectory portion because different practices make different compositional commitments.
The rhythm-specific construction uses the general NOT.5 method and fills its source and target operations. Keeping that connection allows improvements in general translation methods to be reused while preserving the interpretation work that only the rhythmic domain supplies.