While RTFM can be a productive activity, 'perldoc constant' would have only gotten half the answer. If you aren't familiar with here-documents, you might not even recognize the construct, let along have the vocabulary. Finding here-document fu in perldoc is not as straightforward as it might be as well.
In short, I don't think the question at hand is necessarily as obvious as you make it out to be.
In reply to Re^2: Meaning of 'use constant USAGEMSG = > ...'
by herveus
in thread Meaning of 'use constant USAGEMSG = > ...'
by rjsaulakh
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