An AV-1 model should name the architecture description and set out its purpose, scope and subjects in one standard shape, so readers can refer to it quickly and compare descriptions. It may add assumptions, constraints, the period covered and the organisational setting. When it is submitted for registration, it must meet the content and format that DARS requires.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.