| 700 / | HD | DATA PROCESSING: GENERIC CONTROL SYSTEMS OR SPECIFIC APPLICATIONS |
| 1 | DD | GENERIC CONTROL SYSTEM, APPARATUS OR PROCESS {15} |
| 28 | DD | .~ Optimization or adaptive control {13} |
| 32 | DD | .~.~ Specific criteria of system performance {2} |
| 33 | DD | .~.~.~ Constraint or limit (e.g., max/min) {3} |
| 34 | | .~.~.~.~ Variable |