BTN_TOOL_PEN
{ HPEN_MAP_BUT( IN_RANGE, BTN_TOOL_PEN) },
[BTN_TOOL_PEN] = "BTN_TOOL_PEN",
{ .name = "BTN_TOOL_PEN", .value = BTN_TOOL_PEN },
if (bit_test(key_bits, BTN_TOOL_PEN) ||