- case attr 'style'
- when 'abstract'
  - if @parent == @document && @document.doctype == 'book'
    - puts 'asciidoctor: WARNING: abstract block cannot be used in a document without a title when doctype is book. Excluding block content.'
  - else
    abstract
      - if title?
        title=title
      - if blocks?
        =content
      - else
        simpara=content
- when 'partintro'
  - unless @document.doctype == 'book' && @parent.context == :section && @level == 0
    - puts 'asciidoctor: ERROR: partintro block can only be used when doctype is book and its a child of a part section. Excluding block content.'
  - else
    partintro id=@id role=(attr :role) xreflabel=(attr :reftext)
      - if title?
        title=title
      - if blocks?
        =content
      - else
        simpara=content
- else
  =content