WICK · the sell side
PAIRED TOKEN · the buy side
rail · 2× / -50% — multiple up, mirror drawdown down, from the mark
width · $ stacked — ruler follows the zoom
nothing draws under 3px — a 3px block is a floor, not a measure
a block astride a price splits red/green by range, not by $
faint line across a column · that pool's own mid — colours flip there