The resulting output is as follows (the labels will be different, see below):

  1. Animal
    1. Mammal
      1. Placental
      2. Monotreme
        1. Platypus
    2. Marsupial
      1. Kangaroo
      2. Koala
    3. Reptile
  2. Vegetable
  3. Mineral

In the first (or outermost) level, each \item produces an Arabic number followed by a full stop, in the next level each \item produces a lowercase letter in brackets, in the third level, each \item produces a lowercase Roman numeral followed by a full stop, and an uppercase letter for the fourth level. Each level is offset further from the left margin than the previous level.

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