The agreement · The commercial terms · Element

The change mechanism

How price changes over the term, and how scope changes are handled.

The part

What it is

Escalation clauses tied to an index compound over a long term and should be modelled at signature rather than discovered.

The change control process matters as much: an arrangement where every variation is a negotiation becomes expensive in time rather than in price.

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.