| 360 / | HD | DYNAMIC MAGNETIC INFORMATION STORAGE OR RETRIEVAL |
| 88 | DF | RECORD TRANSPORT WITH HEAD STATIONARY DURING TRANSDUCING {4} |
| 97.01 | DF | .~ Disk record {6} |
| 98.01 | DF | .~.~ Plural disks {4} |
| 98.04 | | .~.~.~ Changer {2} |
| 98.05 | DF | .~.~.~.~> Control detail |
| 98.06 | DF | .~.~.~.~> Mechanical detail |