tests/pass-label.nt

   1 00 11
   2 <meow>
   3 22 33
   4 [meow:8]
   5 44 55
   6 [mix:8]
   7 66 77
   8 < mix >
   9 88 99
  10 [meow + mix : 8]
  11 ---
  12 00 11
  13 22 33
  14 02
  15 44 55
  16 0a
  17 66 77
  18 88 99
  19 0c