This isn't valid file or repl syntax.
For the repl:
putStrLn "Hello world"
For a .hs file:
.hs
module Main where main = putStrLn "Hello world"
(function definitions are lower case, types and modules are capitalized)
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This isn't valid file or repl syntax.
For the repl:
For a
.hsfile:(function definitions are lower case, types and modules are capitalized)