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  1. or download this
    # lots of baby perl...
    @my_list = 1, 2, 3;
    # lots of baby perl...
    
  2. or download this
    for ( my $i = 1; $i <= 10; $i++ ) {
      ...
    ...
    for ( 1 .. 10 ) {
      ...
    }
    
  3. or download this
    if( ! open LOG, ">>logfile) {
      die "Cannot create logfile: $!";
    }