| 700 / | HD | DATA PROCESSING: GENERIC CONTROL SYSTEMS OR SPECIFIC APPLICATIONS |
| 1 | DD | GENERIC CONTROL SYSTEM, APPARATUS OR PROCESS {15} |
| 67 | DD | .~ Plural variables {2} |
| 69 | DD | .~.~ Positional (e.g., velocity, acceleration) {1} |
| 70 | | .~.~.~ Positional with nonpositional |