boxMeter
A reading as small boxes, as many lit as it is high; the page gives the colour and the size (--meter-size).
codeBlock
Data or code in monospace: a small title, what it belongs to, and a well that scrolls sideways.
filterChips
A toggle per kind of thing, each with its icon and its count; a press lights one and onChange hears every one that is lit.
panel
One surface with a head (a mark, a title in capitals, one action at its end) when it has a title, otherwise the surface alone.
searchField
A field for words to search by: the icon, then the input. Escape clears it and onInput hears every change.
songRow
A song as a row of a time view: its wave, and zoomed in to eight seconds or less its low, mid and high bands apart.
TimeView
An axis, rows of anything drawn on one canvas, a playhead and + − Fit buttons: wheel and pinch zoom, drag pans, a press seeks.