HelenOS sources

WINDOW_INSIDE     286 uspace/drv/bus/usb/xhci/isoch.c 		res->position = WINDOW_INSIDE;
WINDOW_INSIDE     332 uspace/drv/bus/usb/xhci/isoch.c 		case WINDOW_INSIDE:
WINDOW_INSIDE     433 uspace/drv/bus/usb/xhci/isoch.c 		case WINDOW_INSIDE:
HelenOS homepage, sources at GitHub