--- In GarminGPSMAP60C_60CS@yahoogroups.com
> "The Garmin format is now known..."
> Does anyone know where to find a description of it (the
> that is)?
Most of the Yahoo Groups related to mapsource are full of spam & do
not appear to be moderated. The exception to this is the
"map_authors" group which contains no spam, has a large number of
contributors & is jam-packed with useful information for those trying
to make their own maps.