The knowledge_type field in the DraftCXU model is defined as an enum with values axiom, derived, and prescribed so that each CXU can be categorized by its knowledge status.

knowledge_type: enum

— PYRANA_PLATFORM_ARCHITECTURE_REFERENCE.md

# axiom | derived | prescribed

— PYRANA_PLATFORM_ARCHITECTURE_REFERENCE.md

DraftCXU:

— PYRANA_PLATFORM_ARCHITECTURE_REFERENCE.md