If you can tell me or what program it's for , I can give you more specific instructions on how to use it!
: These are automatic suffix additions from a web browser or operating system. They indicate that you (or someone using the computer) have downloaded a file with the same name at least 12 times previously. Download ecwys (12) (1) zip
: If you work with GIS (Geographic Information Systems), this might be a zipped .ecw raster image. If you can tell me or what program