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       The => digraph is mostly just a synonym for the comma
       operator.  It's useful for documenting arguments that come
       in pairs.  As of release 5.001, it also forces any word to
       the left of it to be interpreted as a string.

    Bareword "value" not allowed while "strict subs" in use  
    at test.pl line 14.
    Execution of test.pl aborted due to compilation errors.