[Haskell-cafe] what does "atomically#" mean?

[Daryoush Mehrtash]

Any idea was the atomically# mean in the following code?

atomically :: STM a -> IO a
atomically (STM m) = IO (\s -> (*atomically# *m) s )

Code is from GHC.Conc module
http://www.haskell.org/ghc/docs/6.6/html/libraries/base/GHC-Conc.html

daryoush
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