The fallback plan · The lead time · Element

The preparation

What has to happen before the fallback can start.

The part

What it is

Contracts, approvals, people, equipment. Each has its own lead time and they are not always parallel.

The longest of them sets the figure.

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.