The README said 14 files were 'not in the collection yet', which
implies somebody could still put them there. Nine of them cannot be:
WHDLoad.key is a per-user signed registration, Custom.dat and key.txt
are slots the emulator expects the user to fill, gpib.rom and
dragonfly-2.3.rom have never been dumped, CARTS.CRC belongs to a dead
code path. The profiles already record why, so the two are now counted
apart: five still to be found, nine that cannot be.