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  1. or download this
    while(<IN>)
    {
      next if 1../The mail system/; # The condition will be true from line
    + 1 until "The mail system"
      # Code here
    }
    
  2. or download this
    use v5.14;
    use Data::Dumper;
    my @list = 1..3;
    ...
    
    say Dumper \@list;
    __DATA__
    
  3. or download this
    $VAR1 = [
              undef,
              undef,
              undef
            ];