The limits · The reasoning · Element
The basis
Why the limit exists.
The part
What it is
Legal, ethical, brand or commercial. Each carries different weight against a business case and knowing which is essential.
A limit that is purely ethical needs a stronger record than one that is legally required, since only the second defends itself.
The smallest level
The attributes it carries
Each attribute is one of the framework’s shared types. What a date is, and how it is written, is defined once for the whole model — the note here says what it means in this particular place.