The window · The lead time · Element
The total
How long from deciding to being ready.
The part
What it is
Including the decision itself, which in most organisations takes longer than any single build step.
Compared with the remaining window, which produces the answer.
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.