The mechanism · The comprehension · Element

The test

What members say when asked how it works.

The part

What it is

Asked casually, not as a quiz. The version they give is the version they act on.

Consistent misunderstandings are design problems rather than communication ones.

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.