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@FullSort = sort {$a->[1] cmp $b->[1]
                   ||
                  $a->[0] cmp $b->[0]
                   ||
                  $a->[2] <=> $b->[2]} @data;

@data = sort { $a->[0] cmp $b->[0] } @data;
@data = sort { $a->[1] cmp $b->[1] } @data;
@data = sort { $a->[2] <=> $b->[2] } @data;

return -1;  # moves the item lower
return +1;  # goes above the previous one
return 0;   # equals

my %speeds = (115kbps => 10,
              2Mbps => 20,
...
              T1 LINE => 40);

my @sorted = sort { $speeds{$a} <=> $speeds{$b} } @unsorted;