The construction

Sizes, clear space, proportions and how elements are placed relative to each other.

The part

What it is

Expressed in relative units where possible, so the specification survives being applied at sizes nobody anticipated.

Minimum size and clear space are the two rules broken most often and the two that most affect recognition.

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.

Value
The dimension, in relative units where possible.
Measure shared type
Rule
What the value governs — clear space, minimum size or proportion.
Text shared type
Applies to
Which asset or context the rule covers.
Choice shared type