Recognising them · The response · Element
The acknowledgement
What the person hears first.
The part
What it is
Within a day, even if only that it has been received and is being looked at.
The acknowledgement matters more than the eventual answer for whether they raise something again.
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.