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  1. or download this
    #!/usr/bin/perl
    
    ...
      print '';
      y0 = y0 - y_step;
    } while y0 > bottom_edge ;
    
  2. or download this
    print foobar
    PRINT
    ...
    1111111111111111111122222222222222222222222222222222222222222222222222
    +222222222222222222222222222222211
    ----------------------------------------------------------------------