• [+/-] Header1
  • Some Item 1
  • Some Item 2
  • Some Item 3
• [+/-] Header2
  • Hello
  • [+/-] This one is nested!
    • A1
    • B2
    • It doesn't matter what you put in here
  • Say no more
• [+/-] Header3
  • Some Item 1
  • Some Item 2
  • Some Item 3
• This one has no children