These programs and supporting information are made available for downloading by the National Geodetic Survey, and are accepted and used by the recipient with the understanding that the United States Government makes no warranties, express or implied, concerning the accuracy, completeness, reliability, or suitability of these programs, of its constituent parts, or of any supporting data. The Government of the United States of America shall be under no liability whatsoever resulting from any use of these programs.

NGS checks each contributed program for viruses using the current version of McAfee VirusScan from Network Associates Technology, Inc. NGS makes no other checks.

The authors of individual programs may have further disclaimers and restrictions. Please see the individual program documentation.