

% $r->headers_out('X-Mason-Test' => 'New value 2');
Blah blah
blah
% $r->headers_out('X-Mason-Test' => 'New value 3');
<%init>
$r->headers_out('X-Mason-Test' => 'New value 1');
$m->abort if $blank;
</%init>
<%args>
$blank=>0
</%args>