anchor.diff:  
         section
           h1 Let
  -        h3.bullet How does var's scoping work?
  +        h3.bullet How does #[span.token.keyword var]'s scoping work?
           ul
  -          li var is function scoped
  +          li #[span.token.keyword var] is function scoped
   
         section
           h1 Var
  
positive.code:               console.log(a); // 2
              }
  
  
  
      script(src='build/build.js')
  
negative.code:             }
  
        section
          h1 Let
          ul.bullet
            li #[span.token.keyword var] is function scoped
            li #[span.token.keyword let] is block scoped
            li A block is any pair of { }
  