Hello,
 
BC reads the gmapsupp from the gps Unit (Oregon600).
BC shows not only the gmapsupp, the BaseMap from the Oregon is shown too.
There is a picture at this mail.
 
In this example the "B9" ist not at the same place. Why?
 
Hope, you understand what i mean, my english ist not very good :))
 
Greets
Arndt