http://www.perlmonks.org?node_id=204802


in reply to Re: PM Obfu
in thread PM Obfu

1) sub'i{} means the same as sub main::i {}, in this case it's used to get rid of the space (important because spaces are used as a mask).
2 and 3) these serve as filler to make the code rectangular and for tweaking the position of the mask over the output.

[TINPC@perlcabal.com shh]$ su real