in reply to Multiple cookies under mod_perl2

As per http://perl.apache.org/docs/1.0/guide/snippets.html#Sending_Multiple_Cookies_with_the_Perl_API 
$r->headers_out->add('Set-Cookie' => $cookie1);
$r->headers_out->add('Set-Cookie' => $cookie2);

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In Section Seekers of Perl Wisdom