| 369 / | HD | DYNAMIC INFORMATION STORAGE OR RETRIEVAL | 
| 176 | DF | DYNAMIC MECHANISM SUBSYSTEM {8} | 
| 178 | DF | .~ Access of multiple storage elements (e.g., record changer) {14} | 
| 191 | DF | .~.~ Storage disc fed to and removed from turntable {4} | 
| 193 |  | .~.~.~ Grouped removal with sequential feed |