The window · The duration · Element
The estimate
How long the window lasts.
The part
What it is
Reasoned from what would close it: how long a competitor would need, how long a regulation takes to be matched, how long an incumbent takes to recover.
A range rather than a point, since the estimate is genuinely uncertain.
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.