anchor.diff:  
      _encoding_—a _keyword_ denoting a character encoding. The default is
      {:utf-8}.
  +
  +   _viewport_—a _string_ denoting the value of a {viewport} meta
  +   attribute. the default is {\"width=device-width, initial-scale=1\"}.
   
      *Description:*
   
  
positive.code: 	   :href (getf feed :href)))))
  
  (defun html-widget-document (title body &key stylesheets scripts feeds
  			     (encoding *default-encoding*))
    "*Arguments and Values:*
  
     _title_—a _string_.
  
negative.code: 
     _encoding_—a _keyword_ denoting a character encoding. The default is
     {:utf-8}.
  
     _viewport_—a _string_ denoting the value of a {viewport} meta
     attribute. the default is {\"width=device-width, initial-scale=1\"}.
  
     *Description:*
  
  