Proof · The claim inventory · Element
The owner
Who is accountable for each claim remaining true.
The part
What it is
Claims are made by marketing and become false through product change. Without an owner, nobody is watching for that.
The owner should be whoever would know first if the claim stopped being true, which is rarely the person who wrote it.
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.