Closing the loop · The individual response · Element
The reply
What is said back.
The part
What it is
Specific to what they raised rather than a template, since a template is recognised immediately and is worse than silence.
Including what will happen, even where the answer is nothing.
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.