Targets and thresholds · The target · Element
The level
What the target actually is.
The part
What it is
With the period it applies to and whether it is a floor, a ceiling or a range.
Ranges are underused and frequently more honest than a point, particularly for measures with real variation.
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.