The promise · The commitment · Element
The recipient
Who the promise is made to.
The part
What it is
A promise made to everyone is made to nobody in particular and cannot be narrowed by anything the recipient does or does not need.
Where several audiences are served, the promise should name the one it is written for rather than averaging across them.
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.
Segment
Links to the segment definition, so the promise and the audience stay in one vocabulary.
Reference shared type