METHOD OF MULTI-DIRECTIONALLY POSITIONING A CURSOR ON A DISPLAY OF A TEXT PROCESSING SYSTEM

摘要

Method and arrangement in a text processing system to move a cursor on a display screen (26) in either a vertical or horizontal direction or both without limitation as to the location of text. Keystroke data from keyboard (16) is processed under the control of programs stored in a random access memory (18). For a cursor motion, the random access memory (18) of the system is structured to include a text storage buffer (64) and a display control block (66) both interconnected to an applications program (62) and a display access method program (68). Data is stored in the text storage buffer (64) in an unformatted configuration and the programs equate a contextual cursor address with a spatial cursor position. After running the display access method program (68) in accordance with application program commands, a refresh buffer (24) provides display signals to visually present by means of the display screen (26) a cursor at an identified position in text.