MP/M was fairly common in small office environments. I remember one particular accounting firm which had managed to delete all their files on the harddisk.. the

MP/M was fairly common in small office environments. I remember one particular accounting firm which had managed to delete all their files on the harddisk.. they had an MP/M system with, IIRC, eight terminals connected. I managed to restore all their files (not very difficult on CP/M or MP/M, as long as the drive is left in peace after the incident, which is what they did).