I never found information about the format cvs which seems to have several options.
Here is the format recognized by NoniGPSPlot (This is done to support files from alertegps or from POI in France ).
Field 1,Ignored,Longitude (décimal), Latitude (décimal),Ignored,Field 2,Field 3,Ignored
For the name of the point:
If the Field 2 or 3 are filled, then "Field 2,Field 3"
Else, "Field 1"
For the gourp name:
Name of the file
Example:
Num: 353,Num 353,9.39696,41.96166,20,Ventiseri,N198,0
The name will be "Ventiseri,N198"
"RF0035-090km/h-R","RF0035-090km/h-R",2.19433,48.12614,,,,
The name will be "RF0035-090km/h-R"