HelenOS sources

KC_N7             132 uspace/drv/hid/adb-kbd/ctl.c 	[0x59] = KC_N7,
KC_N7             150 uspace/drv/hid/atkbd/atkbd.c 	[0x6c] = KC_N7,
KC_N7             145 uspace/drv/hid/usbhid/kbd/conv.c 	[0x5f] = KC_N7,
KC_N7             143 uspace/drv/hid/xtkbd/xtkbd.c 	[0x47] = KC_N7,
KC_N7             166 uspace/srv/hid/input/ctl/sun.c 	[0x44] = KC_N7,
KC_N7             184 uspace/srv/hid/input/layout/ar.c 	[KC_N7] = '7',
KC_N7             213 uspace/srv/hid/input/layout/cz.c 	[KC_N7] = '7',
KC_N7             192 uspace/srv/hid/input/layout/fr_azerty.c 	[KC_N7] = '7',
KC_N7             193 uspace/srv/hid/input/layout/us_dvorak.c 	[KC_N7] = '7',
KC_N7             187 uspace/srv/hid/input/layout/us_qwerty.c 	[KC_N7] = '7',
HelenOS homepage, sources at GitHub