An Extensible User Interface
          Forth Dimensions XIX, no. 6 (1998), 19-27.

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This is a paper directed at the Forth Community.  It presents a technique for equipping Forth based applications with an extensible interface.  The purpose is to provide an add-on module which makes a system accessible without a steep learning curve and without requiring a knowledge of programming. As a system is extended, new commands can be easily added to the interface.  This interface was used for Groups32 and it is part of a project to find ways to disseminate work which combines mathematics and computers.