The CMX video editor I learned to edit on used these. By the time I was learning on it in '92, it was already an old system but still the top system. All it held was text based EDLs, so it didn't need a lot of space. Once the smaller hub based tapes like 30min BCSP/Digibeta were available, the floppy holding the EDL was bigger than the tape holding the image data. I kinda miss the old tape based edit rooms.