I should also point out that if you want to dispell the notion that the comma, and the period, are doing the same thing in the context of the print statement (or anywhere else for that matter), try this:

#!/usr/bin/perl
$, = "dad and ";
print "Hi " . "mom!\n";
print "Hi " , "mom!\n";
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Dave

"If I had my life to do over again, I'd be a plumber." -- Albert Einstein