HelenOS sources

KC_F7             141 uspace/drv/hid/adb-kbd/ctl.c 	[0x62] = KC_F7,
KC_F7             133 uspace/drv/hid/atkbd/atkbd.c 	[0x02] = KC_F7,
KC_F7             112 uspace/drv/hid/usbhid/kbd/conv.c 	[0x40] = KC_F7,
KC_F7             125 uspace/drv/hid/xtkbd/xtkbd.c 	[0x41] = KC_F7,
KC_F7             724 uspace/lib/vt/src/vt100.c 		vt100_key(vt, 0, KC_F7, 0);
KC_F7             208 uspace/srv/hid/input/ctl/stty.c 	0,	KC_F7,		0x1b, 0x5b, 0x31, 0x38, 0x7e, GSP_END,
KC_F7             114 uspace/srv/hid/input/ctl/sun.c 	[0x10] = KC_F7,
HelenOS homepage, sources at GitHub