I just came across a binder in my library with a (roughly) 200 page document labeled: Burroughs Confidential System Specification 3704 3833 S40 System Software Disk Subsystem Design Specification Release Rev B Burroughs Machines Ltd. Software Engineering Livingston, Scotland Date: 03 OCT 1986 It seems to describe the disk software interface to some system. Is this of interest to anyone? Al, would you like it to add to the library? I believe that I was sent this as part of a conversion program I did for someone. Exactly who escapes me. Cheers, Chuck