Abstract: A cursor is provided which has a cursor body and a lens holding portion. The lens holding portion has a liquid crystal display screen therein, adapted for use as a lens. Multiple cross-hairs can be displayed on the lens using the liquid crystal display screen, and can also be modified to display supplemental information on the liquid crystal display. At least two sensors can also be coupled with the cursor for re-orienting the cursor, and adjusting the displayed cross-hairs on the liquid crystal display relative to the orientation.

Abstract: A central processor holds a word-processing program and an entire document to be processed. A smaller I/O processor, connected to the central processor and to an interactive display, holds code for some functions of the word processor, and holds a part of the document. As an operator performs editing tasks at the display, the I/O processor performs locally those functions involving only the document part it holds. When additional document text is required to complete a function, the central processor performs that part of the function involving the additional text.