:icons:
icon:heart[title="I <3 Asciidoctor"]
>>>
Document
  { docMeta =
      Meta
        { docTitle = []
        , docTitleAttributes = Nothing
        , docAuthors = []
        , docRevision = Nothing
        , docAttributes =
            fromList [ ( "icons" , "" ) , ( "sectids" , "" ) ]
        }
  , docBlocks =
      [ Block
          mempty
          Nothing
          (Paragraph
             [ Inline
                 Attr
                 ( [] , fromList [ ( "title" , "I <3 Asciidoctor" ) ] )
                 (Icon "heart")
             ])
      ]
  }