Defining the work · The change record · Element
The cost
What each change cost in time.
The part
What it is
Estimated at the point of agreeing it. A change agreed without a time cost is a change absorbed into the buffer silently.
The cumulative figure is what explains a slipped date.
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.