22. The program routine of instructions of claim 19, further comprising means for selectively retrieving said previous and following text responsive to voice commands.
19. The program routine of instructions of claim 18, further comprising: means for retrieving said initial text and said further text as contextual phrases including a target word and words immediately preceding and following said target word; and, means for centering and displaying said target word in said display window even if each said contextual phrase as a whole is not centered in said display window.