||Thanks Art. I've actually read your document and it's quite a resource. Great job! An updated "how-to" document would be very cool; modern functions that come to my mind are 3-d scenes and animations, transparencies, symbology import, and other cartographic chores, statistical analysis, data aggragation (XTools functionality), and advanced query. I just purchased Manifold and am planning on using it as a compliment to ArcGIS, so I'm interested in finding out what GIS tasks each software package is most proficient at. For example, there were a few tasks in the original ArcGIS/Manifold "How-to" paper that ArcGIS could perform and Manifold could not. Completely objective details like that are quite helpful for deciding which GIS to use for a given task.