I've read the whole 10 pages twice and i haven't seen any link that can explain how to map the F keys. If you know how or have that link please tell me.

what link?

I read the docs and it didn't say anything about the F-Keys. I downloaded the dosbox for here. I can see that the normal keys get their ascii value (in hex), but i don't know why 275 is, for example, chosen to be the right key.

who are those and where can i find them?

Is there a way to map those keys?