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, like the custom format, is mainly used for the purpose of testing GPSBabel. It is supposed to contain one field for each piece of information supported by the xcsv format writer, but it may not be entirely in sync with the documentation at Appendix C, GPSBabel XCSV Style Files.
For a list of fields, see the style/tabsep.style file in the GPSBabel source distribution.