Defining the work · The change record · Element
The changes
What changed.
The part
What it is
Additions, removals and reinterpretations. The last is the most common and the least recorded, since it does not feel like a change.
With who requested it, since a pattern by requester is worth seeing.
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.