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This page describes a couple of proposed changes to the notation enabled with -XArrows.
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([current documentation](http://www.haskell.org/ghc/docs/latest/html/users_guide/arrow-notation.html))
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## Changing the types of arrow operators
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## Changing the types of arrow operators (implemented in March 2013, for GHC 7.8)
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Currently, the type of each argument of an operator (and its result) is required to have the form
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