sub no_reference {
    $_[0] =~ s/o/O/g;
}

$string = 'Bozo is a clown';
no_reference($string);
print $string, "\n";


##</code><code>##

($q=q:Sq=~/;[c](.)(.)/;chr(-||-|5+lengthSq)`"S|oS2"`map{chr |+ord
}map{substrSq`S_+|`|}3E|-|`7**2-3:)=~y+S|`+$1,++print+eval$q,q,a,