Roger thank you.

3 questions I have.

I have some understandig issues.
1) I cannot combine two BC with an individual size of 4.1GB but I can combine two BC with a seize of 3.9GB. Correct?
2) limit of total tiles? What is that? How can I check what is the max tile seize for my Chartplotter?
3) What means supernumerary?

Regards
Monette