Before returning to the subject of this thread, I'd like to point out that ikegami is one of the very best contributors to Perlmonks. The quality of his nodes is even higher than his experience ranking indicates. A monk once suggested that an efficient way to deepen your Perl knowledge is simply to go to the list of ikegami nodes, and read, read, read. I've done this several times, and I'm happy to pass the suggestion on.