Abstract: A hypertext network is provided for use in an interactive data processing system including a processor device, a memory, a user input device and a display. The hypertext network comprises a plurality of user selectable stored information modules. Each module includes a predefined descriptive header and at least some modules include a link reference phrase to another one of the plurality of user selectable modules. Responsive to a user selection entry, the associated user selectable module is displayed and a marker character is stored with each link reference phrase to the selected displayed module. The marker character is stored in an input field that is accessed by a user to select a particular link reference phrase and the reference phrase text is not defined as a user input field, so that the user cannot accidentally change the reference phrase.