The cycle · The demand cycle · Element
The shape
How demand moves across the year.
The part
What it is
Monthly or weekly, across two or three years so the pattern is distinguishable from a single unusual year.
Plotted from actual sales rather than from the budget, which encodes what was hoped rather than what happened.
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.