This is incorrect. Nim does not allow variables starting with underscore. Also, the compiler errors cannot if any of "useHTTP", "usehttp" or "use_http" is acc

This is incorrect. Nim does not allow variables starting with underscore. Also, the compiler errors cannot if any of "useHTTP", "usehttp" or "use_http" is acceptable or unwanted, but it can error out with a clear warning if you are trying to define different variables with those names in the same scope.