Definition
WebHID API defines HIDUnitSystem
enum HIDUnitSystem {
    "none", "si-linear", "si-rotation", "english-linear",
    "english-rotation", "vendor-defined", "reserved"
};HIDUnitSystem enumWebHID API defines HIDUnitSystem
enum HIDUnitSystem {
    "none", "si-linear", "si-rotation", "english-linear",
    "english-rotation", "vendor-defined", "reserved"
};