HelenOS sources

INDEV_SIGNAL_SCROLL_DOWN  143 kernel/genarch/src/kbrd/kbrd.c 			indev_signal(instance->sink, INDEV_SIGNAL_SCROLL_DOWN);
INDEV_SIGNAL_SCROLL_DOWN  133 kernel/generic/src/console/console.c 	case INDEV_SIGNAL_SCROLL_DOWN:
HelenOS homepage, sources at GitHub