ChoralRoot FM-1 designer · 27 keys · 14 buttons · 8 knobs · 240×240 screen

drag paint LED level · right-drag off · double-click a key / button / knob to label and annotate it · click the screen to design it · alt-click pick level · ⌘Z undo
label printed on the cap in this state (what it does)
note for the legend (optional)
function (what turning it does)
value shown under the knob (optional)
screen JSON (header · cards · panel · footer — see FORMAT.md)