ReadonlycursorReadonlyidReadonlylabeli18n key or plain label.
ReadonlyshortcutSingle-key shortcut (e.g. l).
Abort the current operation and return to idle.
Optionalreason: CancelReasonKeys not consumed by global shortcuts (Enter, Backspace, …). Return true if handled.
Typed value (numbers like 1200 or 600,400), submitted with Enter. Return true if accepted.
Polyline: click vertices; double-click/Enter finishes; click the first point to close.