This format can...
read and write waypoints
This format is derived from the xcsv format, so it has all of the same options as that format.
This format is not actually used by any real product. It is most useful for debugging purposes when developing a new format module for GPSBabel.
To understand the contents of this file, look at the
style/custom.style file in the GPSBabel source
distribution as well as Appendix C, GPSBabel XCSV Style Files.