Thanks for all the quick responses. I'll be sure to vote up a bunch of posts. I ventured over to the other thread and found this code. I don't really understand what is occurring, so I thought I could explain it to the best of my abilities, and you guys could help by filling in the gaps?

#! perl -slw
use strict;

my @a = 1..3;
my @b = 'a'..'f';
my @c = map chr, 33 .. 37;

nFor( 3, \@a, \@b, \@c ); #3 sets the number of arrays to sift through
+.

sub nFor {
    my $n = shift; #I understand shift chops off the first element in 
+an array, but what purpose does that serve?  Also, how are the arrays
+ (@a, @b, @c) referenced in this code?
    if( $n ) { #what exactly is $n?
        for my $i ( @{ shift() } ) { # I have no idea how $i get's it'
+s value?
            nFor( $n-1, @_, $i ); #why does the top nFor call for 4 va
+riables, while this one only calls for 3?
        }
    }
    
    else {
        print join ' ', @_;
    }

}
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