Slippage · The history · Element
The coverage
How much of the work is in the record.
The part
What it is
A record covering only the successful projects understates slippage substantially, and that is the usual failure.
Cancelled and abandoned work belongs in it too, since it is the extreme case of running late.
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.