Pillars · The claim to it · Element
The gap
What is not being said, which is the opening.
The part
What it is
The interesting gap is usually not a missing topic but a missing honesty — the part of the subject everyone avoids because it is inconvenient to say.
Some gaps are empty for a reason. Recording why nobody has filled it separates an opening from a warning.
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.
Reason
Why nobody has filled it, which is sometimes an opening and sometimes a warning.
Reason shared type