Route to market · The coverage map · Element
The assignment
Which route owns which segment.
The part
What it is
By an explicit rule — size, geography, product or sector — rather than by convention or by whoever got there first.
The rule matters more than the specific allocation, because the rule handles cases nobody anticipated.
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.