| 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} | 
| 98.02 |  | .~.~.~ Axially fixed flexible disks {1} | 
| 98.03 | DF | .~.~.~.~> With pneumatic partioning of disks |