Reading the signal · The weighting · Element
The priority
The combined ranking.
The part
What it is
Frequency multiplied by severity, which produces a different order from either alone and a different one again from loudness.
The comparison with the loudness ranking is worth showing, since it is usually what people expected.
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.