Abstract: Techniques are described for implementing the automatic generation of a DynaKey™ GUI external file that is then used by the corresponding builder <B>, runtime <R>, and tester <T> systems. The automation begins by data-mining <D> a design document, screen-by-screen, to extract pertinent text, icon, static key, screen branching, and other necessary information. The data-mined file is then used to create a new GUI external interface file or to modify an existing interface file. During the process, information is provided in list boxes to insure the design document is free of errors as well as to provide a log of update modifications when an interface is modified. The list box contents can also be printed to allow for viewing an expanded version of the list box contents. Accordingly, many successive prototypes leading to the final production system can be implemented much more quickly and efficiently than with typical preexisting approaches.