Sets parameters used by the Master Process and various Modules. For the parameters and their associated keywords, the Parameter Reference . Will print the value of the specified parameters. If none are specified, it prints the values of all parameters. This is the stepper for RPM, hopefully useful in debugging.
Abort quits the stepper.
Dequeue will only process the events scheduled to run at the current time, but will run no productions. If the schedule queue is empty, then it runs ACT for one production cycle. If there is something in the schedule queue, it runs ACT up to that event. Search provides ACT-R's sdm functionality in the stepper. Whynot provides ACT-R's whynot functionality in the stepper.