The positioning statement · The statement · Element

The four parts

Target, frame, difference and reason to believe.

The part

What it is

Each part comes from work done elsewhere in the object: the segment, the frame of reference, the point of difference, the reason to believe.

Assembling them is quick if that work exists and impossible if it does not, which is a useful diagnostic.

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.