anchor.diff:    (:method :around ((window basic-window-features-mixin))
              (<:body
               (render-window-scripts window)
  -            (call-next-method))))
  +            (call-next-method))
  +	   (when (window-component.defer-css window)
  +	     (dolist (stylesheet (effective-window-stylesheets window))
  +	       (<:link :rel "stylesheet"
  +		       :href stylesheet
  +		       :type "text/css")))))
   
   (defgeneric render-window-scripts (window)
     (:method ((window basic-window-features-mixin))
  
positive.code:   (awhen (window-component.icon window)
      (<:link :rel "icon"
  	    :type "image/x-icon"
  	    :href it))
    (dolist (stylesheet (effective-window-stylesheets window))
      (<:link :rel "stylesheet"
  	    :href stylesheet
  	    :type "text/css")))
  
  (defmethod render-html-body ((window standard-window-component))
    (render (window-body window)))
  
negative.code:       (<:link :rel "icon"
  	      :type "image/x-icon"
  	      :href it))
      (unless (window-component.defer-css window)
        (<:link :rel "stylesheet"
  	      :href stylesheet
  	      :type "text/css"))))
  