%div{:id=>@id, :class=>['olist', @style, role]}
  - if title?
    .title=title
  %ol{:class=>@style, :start=>(attr :start), :type=>list_marker_keyword}
    - items.each do |item|
      %li{:class=>('slide' if option? :step)}
        - if item.blocks?
          %p=item.text
          =item.content.chomp
        - else
          =item.text