Slippage · The history · Element

The record

Planned against actual.

The part

What it is

Two dates per piece of work: what was planned at the start and what happened. Nothing more elaborate is needed.

Taken from what was planned originally rather than from the last revised plan, which is the version that always looks accurate.

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.