PURPOSE: To increase the processing speed by updating the display only in a prescribed row, for example, the row where a cursor exists in the process of repeat at the time of repeating the picture movement processing.

CONSTITUTION: When an operator operates a code key 228 and a preceding picture key 214, the repeat function is operated to return a device to the state of a first picture A, but only the row where the cursor exists is updated in this process. That is, a first row in a sentence display area 163 on a third picture is updated to the display (blank in this case) in the first row of the sentence display area 163 on a second picture B. Next, first and second rows are updated to the first row (occupies the display space of two normal rows in this case) on the first picture. Thus, the time required for unnecessary rewrite of intermediate pictures in the repeat process is shortened to increase the processing speed.