Haskell : hide function in module (i.e. make function usable only by other functions in same module)

suppose I have a file NecessaryModule.hs, which has the following internals : ``` module NecessaryModule where addNumber1 :: Int -> Int -> Int addNumber1 a b = a + b addNumber2 :: Int -> Int -> Int addNumber2 a b = a + b ``` When I do : ``` :load NecessaryModule ``` both addNumber1 and addNumber2 are available in the current scope. Is there a way to hide the function addNumber2 so that it is available to other functions in the same module but does not load up when I load the module in the manner above? Thanks ---------------------------------------------------------------------------------------- [Response to nanothief] I tried your suggestion in the following way but it did not work for me. I had a file called test2.hs as follows : ``` --test2.hs module Test2 (addNumber1) where addNumber1 :: Int -> Int -> Int addNumber1 a b = a + b addNumber2 :: Int -> Int -> Int addNumber2 a b = a + b ``` But then when I do ``` :load test2 ``` then I am able to invoke both addNumber1 and addNumber2. Have I done something wrong? Thanks