[abstract, id="open", role="example"]
--
This is an abstract quote block.
Who knows what it really means?
--
>>>
Document
  { docMeta =
      Meta
        { docTitle = []
        , docTitleAttributes = Nothing
        , docAuthors = []
        , docRevision = Nothing
        , docAttributes = fromList [ ( "sectids" , "" ) ]
        }
  , docBlocks =
      [ Block
          Attr
          ( [ "abstract" ]
          , fromList [ ( "id" , "open" ) , ( "role" , "example" ) ]
          )
          Nothing
          (OpenBlock
             [ Block
                 mempty
                 Nothing
                 (Paragraph
                    [ Inline
                        mempty
                        (Str
                           "This is an abstract quote block.\nWho knows what it really means?")
                    ])
             ])
      ]
  }