>However, one thing that the several of us who were working on it couldn't >establish, and which appears to be undocumented, is the >meaning/significance/importance of the "\p????" component of the description >string in the mapinfo.prj file. These are the PCS (Projected Coordinate System) codes used by GeoTIFF. The GEOREG.MBX tool uses them when registering an image by matching the codes in the .PRJ file. They are never required for a custom coordinate system. I found them documented at http://www.remotesensing.org/geotiff/spec/geotiffhome.html ---------------------------------------------------------------------- To unsubscribe from this list, send e-mail to [EMAIL PROTECTED] and put "unsubscribe MAPINFO-L" in the message body, or contact [EMAIL PROTECTED]