LOCK program instruction NOTE: Although a LOCK instruction can be used to change the program priority within a reaction program, the priority still returns to its prereaction value when a RETURN is executed in the program. This occurs only when executing a RETURN from a reaction program. Example Increase the program priority by 10: LOCK PRIORITY+10 Related Keywords PRIORITY real-valued function REACT program instruction REACTI program instruction eV+Language Reference Guide, v2.x, 18319-000 Rev A Page 333