To address that specific example, if you re-wrote it as a subroutine, you could just return and be done with it. There is no need for a last LABEL when you do something like that. 
sub foo
{
     my ($ary1, $ary2) = @_;

     foreach my $wid (@$ary1)
     {
          foreach my $jet (@$ary2)
          {
               last if ($wid > $jet);
               $wid += $jet;
          }
     }
     return;
}

foo(\@ary1, \@ary2);

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Sure, you can use LABELs to reduce what I might term "flag variables", or variables that merely represent a condition, but with a little re-engineering, you can usually eliminate those and still not use LABELs.

Update:
I had put a return if ($wid > $jet); but this was incorrect, and this would explain why my remarks seem kind of incoherent.

In reply to Re^N+1: What does this mean by tadman
in thread Code explanation needed (was: What does this mean) by Anonymous Monk

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