This format can...
read and write waypoints
read and write tracks
read and write routes
Overlay files used by Geogrid™-Viewer has to be in ASCII format. Make sure you save the files correctly.
Lines or polygons within the Geogrid™-Viewer (type 3 and 4) will be converted to tracks, except they are grouped. In this case GPSBabel creates routes.
During the creation of an overlay file, a circle will be added to each position of a waypoint or a route.
Sample layout of the ASCII overlay file
[Symbol <number # >] Typ=<1=picture,2=Text, 3=line, 4=area, 5=rectangle, 6=circle, 7=triangle> Group=<1=no group, number > 1=group number> Col=<number of the line color> Zoom=<1=no zoom, 2=zoom> Size=<size can be between 101 and 118> Art=<style> Punkte=<number of XKoord> XKoord0=<decimal X coordinate (Longitude) of the waypoint> YKoord0=<decimal Y coordinate (Latitude) of the waypoint> [MapLage] MapName=Top. Karte 1:50.000 Nieders. DimmFc=100 ZoomFc=<zoom level of the map> CenterLat=<map center in decimal Y coordinates> CenterLong=<map center in decimal X coordinates of > RefOn=0