Thank you for your help Alfons.
(resolution mil 10)
The board is exported with 1/10 of a mil.
The clearance I pass you is 6.1
You change it to 6.2
What am I missing? Your comment is not making sense to me.
If I pass you 6.0, you do not change it.
What I meant to say, and didn't, is that I would have expected your software to adopt the routing grid size according to the (resolution mil 10) statement. This only makes sense, because this seems to be the only way you could output coordinates at that resolution without introducing a rounding error during the output creation, and a subsequent clearance violation within Kicad. So I assume the (resolution ...) statement is being honored in this way, that it establishes the routing grid size. That said, then it becomes confusing that 6.1 would become 6.2, but that 6.0 does not become 6.1.
I hope this clarifies my confusion, if that makes sense.
Thanks again for the usage of this excellent software.