Sequence · The external items · Element

The items

What the project depends on externally.

The part

What it is

Approvals, supplier deliveries, another team’s work, a regulatory response, a customer decision.

The list is usually longer than the plan shows, because internal work is drawn in detail and waiting is drawn as an arrow.

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.