anchor.diff:      let _readonly           = flag "readonly"
       let _required           = flag "required"
       let _reversed           = flag "reversed"
  +    let _scoped             = flag "scoped"
       let _selected           = flag "selected"
       let _typemustmatch      = flag "typemustmatch"
   
  
positive.code:     let _hreflang           = attr "hreflang"
      let _httpEquiv          = attr "http-equiv"
      let _id                 = attr "id"
      let _keytype            = attr "keytype"
      let _kind               = attr "kind"
      let _label              = attr "label"
  
negative.code: let title      = tag "title"
  
  // Content sectioning
  let blockquote = tag "blockquote"
  let body       = tag "body"
  let address    = tag "address"
  let article    = tag "article"
  