Nolimits Default maps editing

hello
I'm a bit new here
is there a way to edit or add objects and sounds to nolimits default maps?
it says its read-only files and can't be edited, but i remember in the old days i did some edits to the default maps but now i cant!
any help would be apreciated
<3

Hi,

Thats not possible.
Why would u change this ?

I have more then 6 (six) years experience with NL2 (even with NL1)