The evidence

What each assessment rests on.

The part

What it is

Direct evaluation, customer report, published specification or impression. Only the first three count and the fourth is what most comparisons contain.

Recording the basis is what allows a stale assessment to be identified as stale.

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.