Building · The build plan · Element
The displacement
What stops or slows so the build can happen.
The part
What it is
Every build plan is also a stop plan, and the second half is usually left implicit, which is why the first half fails.
Naming what is displaced also makes the true cost of the build visible, which is the honest basis for deciding it is worth doing.
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.