The GeoSim Interface Library (GIL): Programmer's Manual, Version1.0.1
The GeoSim Interface Library (GIL) is a small, easy to use set of functions for building a graphical user interface. It was originally designed to support the user interface needs of Project GeoSim, a computer-aided education project for introductory geography classes. The original design for GIL was driven by the need to develop easy to use software that was portable to a variety of computing environments. It was used by a team of programmers engaged in rapid prototyping and frequent change to their user interfaces. GIL is freely available via anonymous FTP, gopher or Mosaic (or any other World Wide Web client) from geosim.cs.vt.edu, url http://geosim.cs.vt.edu.