Channel selection · The channel list · Element
The origin
Whether the channel was chosen or inherited.
The part
What it is
A channel someone selected for a reason has a defender and a rationale. An inherited one has neither and is where the review should start.
Recording when it started makes age visible, and age correlates strongly with never having been questioned.
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.