Without the style rules in this document, all the lists would use decimal numbers.

1. First Topic
   1. First Subtopic
      1. First detail
         1. First subdetail
         2. Second subdetail
      2. Second detail
      3. Third detail
   2. Second Subtopic
      1. First detail
      2. Second detail
      3. Third detail
2. Second Topic
   1. First Subtopic
      1. First detail
      2. Second detail
      3. Third detail
   2. Second Subtopic
      1. First detail
      2. Second detail
      3. Third detail