item-0 at level 0: unspecified: group _root_
  item-1 at level 1: title: Example Document
  item-2 at level 1: section_header: Introduction
  item-3 at level 1: text: This is the first paragraph of the introduction.
  item-4 at level 1: section_header: Background
  item-5 at level 1: text: Some background information here.
  item-6 at level 1: list: group group
    item-7 at level 2: list_item: First item in unordered list Nested item 1 Nested item 2
    item-8 at level 2: list: group group
      item-9 at level 3: list_item: Nested item 1
      item-10 at level 3: list_item: Nested item 2
    item-11 at level 2: list_item: Second item in unordered list
  item-12 at level 1: ordered_list: group group
    item-13 at level 2: list_item: First item in ordered list Nested ordered item 1 Nested ordered item 2
    item-14 at level 2: ordered_list: group group
      item-15 at level 3: list_item: Nested ordered item 1
      item-16 at level 3: list_item: Nested ordered item 2
    item-17 at level 2: list_item: Second item in ordered list
  item-18 at level 1: section_header: Data Table
  item-19 at level 1: table with [4x3]