This format can...
read and write waypoints
read and write tracks
read and write routes
This is the SD card format used by the Magellan Explorist 400, Explorist 500, Explorist 600, and Explorist XL and internally on those devices plus the Explorist 210. Stored waypoints are identical to the Magellan SD format used by Meridian, but the newer models allow longer waypoint names. Routes are subtly different.
You should name any file containing waypoints created with this format with a ".upt" extension so the firmware can read it. Similarly, routes should be named ".rte" and tracks should be named ".log".
Default icon name.
The deficon option is used to control the icon output when writing to this format. It overrides any icon informatino that might be present in the source data.
Max number of comments to write (maxcmts=200).
The maxcmts option allows you to specify the number comments that will be sent to the unit.
Magellan receivers allow a maximum of 200 waypoint comments. Unfortunately, DirectRoute uses waypoint comments to provide next turn directions for navigation pop-ups and that comes from that pool of 200 comments. It is therefore sometimes convenient to limit the number of waypoint comments written to the receiver. For example, a geocacher might want to upload 400 waypoints, but only 190 with comments so that DirectRoute could provide driving directions for the next ten turns.