$thingy -> foo (1,2);           # results printed to current filehandle
$string = $thingy -> foo (1,2); # results returned as a single string
@lines  = $thingy -> foo (1,2); # results returned as a bunch of lines

##</code><code>##

$thingy -> foo (1,2) -> to_output_channel;
$string = $thingy -> foo (1,2) -> as_string;
@lines  = $thingy -> foo (1,2) -> as_list;