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  • Texts are built in a tree data structure
  • A text begins with a root node; this root node generally contains the metadata for the text
  • Pages are added to this root node; these pages are the children of the root
  • Child pages can be added to any page; the page they are added to is the parent page
  • Pages that share the same parent are siblings
  • A page may have multiple children, but will have only one parent
  • Pages will be arranged in the text according to the linear order that they appear in the table of contents
  • For example, see the text contents below:
    • Main Title
      • Introduction
      • Section A
        • Subsection 1A
        • Subsection 2A
      • Conclusion
  • In the example above:
    • "Main Title" is the root node
    • "Introduction," "Section A," "Section B," and "Conclusion" are the children of "Main Title"
    • "Subsection 1A" and "Subsection 2A" are the children of "Section A"
    • "Section A" is the parent of "Subsection 1A" and "Subsection 2A"
    • "Subsection 1A" and "Subsection 2A" are siblings
    • In the text, the "Main Title" would be the first page, followed by "Introduction," then "Subsection 1A," then "Subsection 2A," then "Conclusion"
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