{"L1_core": {"domain": "documentation", "category": "technical_drawing", "entity_type": "process"}, "L2_process": {"types": {"layout": {"description": "Physical placement diagram"}, "wiring": {"description": "Electrical connection diagram"}, "schematic": {"description": "Functional connection diagram"}}, "standards": ["ISO 7200", "ISO 128", "ANSI Y14"], "parameters": {"scale": ["1:1", "1:2", "1:5", "1:10"], "format": ["A4", "A3", "A2", "A1", "A0"]}}, "L5_metadata": {"updated": "2026-01-04", "version": "2.0"}, "L3_relations": {"applies_to": ["electrical_systems", "mechanical_systems", "hvac"], "related_processes": ["installation_plan", "installation", "commissioning"]}}