A method and apparatus for controlling a schedule and a to-do list on a computer display. A computer implemented method of the present invention includes the steps of displaying a calendar controller on a computer display, selecting at least one date on the calendar controller, determining a display...http://www.google.com.hk/patents/US5570109?utm_source=gb-gplus-share專利 US5570109 - Schedule and to-do list for a pen-based computer system
