[notepad0x90]

with apples in that list for example, you used '2.1' to indicate a new item, the space is cosmetic, the functional indicator is '2.1'

This wouldn't look right:

Introduction

  Fruit

    Apples

      Red apples

      Green apples

I'm sure you can work it out, but it doesn't feel natural, or ideal. (i can't get hn to format it without making it all one line so i used double new line).