Ownership · The handover · Element
The context
What the new owner needs to know.
The part
What it is
Why the definition is what it is, which quirks exist, and which known problems have been accepted rather than fixed.
This is the part that is lost, and it is what makes a new owner spend six months rediscovering decisions.
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.