The plan · The reactive space · Element
The allocation
How much capacity is left unbooked.
The part
What it is
A slot a month is enough for most organisations. The point is having any rather than having many.
It should be held as capacity rather than as a specific slot, so it can be used when something arises rather than on a fixed 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.