STD_USAGE_PAGE 44 uspace/app/vuhid/hids/bootkbd.c STD_USAGE_PAGE(USB_HIDUT_PAGE_GENERIC_DESKTOP), STD_USAGE_PAGE 48 uspace/app/vuhid/hids/bootkbd.c STD_USAGE_PAGE(USB_HIDUT_PAGE_KEYBOARD), STD_USAGE_PAGE 63 uspace/app/vuhid/hids/bootkbd.c STD_USAGE_PAGE(USB_HIDUT_PAGE_LED), STD_USAGE_PAGE 76 uspace/app/vuhid/hids/bootkbd.c STD_USAGE_PAGE(USB_HIDUT_PAGE_KEYBOARD),HelenOS homepage, sources at GitHub