----------------------------Original message---------------------------- I am very interested in a definitive answer to Chris Winters' question about ESRI datasets. We have had numerous requests to clip portions of the spatial datasets for professors. I have not allowed it at this point; rather I have input point coverages from a file, so that patrons could add their own point data to an ArcWorld or ArcUSA basemap. Li Hunt Map & Geography Library University of Illinois [log in to unmask]