Marble mode. Tap or click = ink drop · drag = comb · two-finger twist = vortex ·
two-finger pinch = fold · long press = pressure (hold or push up to feed ink, pull back to stir) ·
pen = stylus wake (pressure sets the tip) · mouse: right-drag = vortex, Shift-drag = fold,
Shift + right-drag = pressure, middle-drag = wake. A MIDI instrument plays straight in on Chrome/Edge.
Settings live in the panel at the top left (the desktop app's settings window, in the browser).
This browser has no WebGPU. midi-sink's marbling engine needs it (Chrome, Edge, Safari 26, Firefox 141+).