The promise · The origin · Element
The purpose link
How the promise follows from why the organisation exists.
The part
What it is
The promise should be readable as purpose turned outward and made specific enough to fail. Where it cannot be, one of the two is wrong.
This link is what stops the promise being rewritten by whichever function is loudest in a given year.
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.