# File lib/rd/rd2html-ext-lib.rb, line 36
    def visit(tree)
      install_headline_title if opt_headline_title
      install_headline_secno if opt_headline_secno
      install_ref_extension if opt_ref_extension
      install_enable_br if opt_enable_br
      install_native_inline if opt_native_inline
      install_head_element if opt_head_element
      title_init if opt_headline_title || opt_headline_secno
      super
    end