Scope · The boundary · Element
The adjacent
The nearby things that are out of scope.
The part
What it is
The ones people keep suggesting: a related product, a larger customer segment, a different geography, a service wrapped around the product.
Listing them is quick, because everyone already knows what they are.
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.