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my $cookie = $CGI->cookie( -name=>'stflogin', ... -value=>$CGI->param("password"), -expires=>'+1m'); print $CGI->header(-cookie=>[$cookie,$other_cookie]);
my $cookie = $CGI->cookie( -name=>'stflogin', ... -name=>'stfpassword', -value=>""); print $CGI->header(-cookie=>[$cookie,$other_cookie]);