I'm reading someone else's code and came across this code: 
sub usage() 
{
    print <<"END_USAGE";

Usage: -f <file>

END_USAGE
}

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This is used in conjunction with GetOpt::Long so I'm wondering how that print syntax works. Is it something specific to GetOpt or what? I couldn't find any mention of it in the perldoc page for GetOpt::Long. Thanks.

In reply to Please explain: print <<"END_USAGE"; by richz

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