Abstract: A method of setting the operating parameters in a microprocessor controlled typewriter or like office machine having a microprocessor, a set-up initiating actuator, a data input keyboard which includes (i) a printer-advance actuator, (ii) a first command actuator, and (iii) a second command actuator, a memory, a record carrier, and a printing apparatus including the steps of:(a) actuating the set-up initiating actuator disposed on the keyboard to enter a set-up mode and to recall a set-up plane which lists a plurality of sub-planes;(b) displaying the set-up plane on the record carrier;(c) selecting one of the plurality of sub-planes by using the printer-advance actuator;(d) actuating the first command actuator to recall from memory the selected sub-plane and to print the parameters of the selected sub-plane upon the record carrier;(e) selecting one of the values of the selected sub-plane by using the printer-advance actuator;(f) storing the selected value in the memory;(g) actuating the second command actuato