An improved method of entering instructions to a data processing system to modify the display includes voice recognition. In one embodiment the screen is divided into sectors and the memory supplying data bits to the display is functionally divided in a corresponding way. The operator utters sector identification and change instructions. Voice recognition apparatus provides recognized location information and instructions to an assembler from which commands are issued to the system. In another embodiment a touch responsive screen is used in conjunction with spoken instructions. The system is particularly useful in preparing material for microform storage.