What does "print $cgi->header" do?

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Content-Type: text/plain; charset=ISO-8859-1
Content-Transfer-Encoding: 7bit
Content-Disposition: inline

There is a line in script we have that I find baffling, it is

print $cgi->header;

To me this seems to be printing the results of the header method of the
CGI
module to standard output.

Is something else going on here as well?

Thanks

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