Symbol: BTN_EXTRA
usr/src/uts/common/io/usb/clients/usbinput/usbwcm/usbwcm.c
371
uwacom_event(usbwcmp, EVT_BTN, BTN_EXTRA, extra);
usr/src/uts/common/io/usb/clients/usbinput/usbwcm/usbwcm.c
617
BM_SET_BIT(sc->sc_bm[1], BTN_EXTRA);