anchor.diff:              li #[code figure] #[+tag('Sectioning Root','figure-sectioning-root')]
               li #[code figcaption]
               li #[code blockquote] #[+tag('Sectioning Root','blockquote-sectioning-root')]
  -        section
  +        section#lists
             h3 Lists
             ul
               li #[code ol]
  
positive.code:             li #[code cite]
              li #[code sup]
              li #[code sub]
          section
            h3 Machine-Readable Data
            ul
              li #[code data]
  
negative.code:           dd.update
              time(datetime="2016-03-06 15:41" itemprop="dateModified") Mar  6, 2016 #[span.tod  3:42 PM]
              span.o-Textbox.c-Label.c-Label--dang.-ml-1 Latest
          nav#table-contents
            h2 Table of Contents
            ol
              li: a(href="#table-contents") Table of Contents
              li: a(href="#sections") Sections
              li
                a(href="#grouping-content") Grouping Content
                ol
                  li: a(href="#paragraph-like-content") Paragraph-Like Content
                  li: a(href="#lists") Lists
                  li: a(href="#tables") Tables
              li
                a(href="#text-level-semantics") Text-Level Semantics
                ol
                  li: a(href="#stressed-text") Stressed Text
                  li: a(href="#documentation-edits") Documentation and Edits
                  li: a(href="#machine-readable-data") Machine-Readable Data
              li: a(href="#embedded-content") Embedded Content
              li: a(href="#form-content") Form Content
              li: a(href="#interactive-content") Interactive Content
        section#sections
          h2 Sections
          p May be used where Flow Content is expected.
          ul
  