Growth and direction · The rate · Element
The history
What the market did before the current period.
The part
What it is
Long enough to include a previous contraction. A market that has only ever been observed growing has been observed for too short a time.
Where no history is available, that is worth stating rather than treating the current rate as the market’s nature.
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.