The section <<page-break, Page break>> describes how to add a page break.
>>>
Document
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        , docAttributes = fromList [ ( "sectids" , "" ) ]
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          mempty
          Nothing
          (Paragraph
             [ Inline mempty (Str "The section ")
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                 mempty
                 (CrossReference
                    "page-break" (Just [ Inline mempty (Str "Page break") ]))
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             ])
      ]
  }