The fallback plan · The alternative · Element
The option
What would be done instead.
The part
What it is
Specific enough to act on: a reduced scope, a different supplier, a manual process in place of the automated one.
One clear option is worth more than three sketched ones.
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.