Channel performance · The contribution · Element
The net
Revenue less margin share and direct cost.
The part
What it is
Per route and per period, on the same basis so the routes are comparable.
Including any route-specific costs — platform fees, certification, dedicated support — which are frequently allocated to overhead.
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.