Gardown® is a shareware PC program that will download and upload all the Waypoints
Track, Routes and Proximity WP held in the Garmin®.
The file names have the form xxxx_gdn.wpt.
The normal version has 20 character names.
An alternate version with 15 character-upper case names, suitable for use with the 12XL,
is also available with the file name xxxx_g15.wpt.