anchor.diff:  (defcfun "webkit_web_view_zoom_out" :void
     (web-view webkit-web-view))
   
  -(defcfun "webkit_web_view_get_full_content_zoom" gboolean
  +(defcfun "webkit_web_view_get_full_content_zoom" :boolean
     (web-view webkit-web-view))
   
   (defcfun "webkit_web_view_set_full_content_zoom" :void
     (web-view webkit-web-view)
  -  (full-content-zoom gboolean))
  +  (full-content-zoom :boolean))
   
   (defcfun "webkit_get_default_session" soup-session)
   
  
positive.code:   (web-view webkit-web-view)
    (request webkit-network-request))
  
  (defcfun "webkit_web_view_search_text" gboolean
    (web-view webkit-web-view)
    (text glib:g-string)
    (case-sensitive gboolean)
    (forward gboolean)
    (wrap gboolean))
  
  (defcfun "webkit_web_view_mark_text_matches" guint
    (web-view webkit-web-view)
    (string glib:g-string)
    (case-sensitive gboolean)
    (limit guint))
  
  (defcfun "webkit_web_view_set_highlight_text_matches" :void
    (web-view webkit-web-view)
    (highlight gboolean))
  
  (defcfun "webkit_web_view_unmark_text_matches" :void
    (web-view webkit-web-view))
  
negative.code:   (web-view webkit-web-view)
    (script glib:g-string))
  
  (defcfun "webkit_web_view_can_cut_clipboard" :boolean
    (web-view webkit-web-view))
  
  (defcfun "webkit_web_view_can_copy_clipboard" :boolean
    (web-view webkit-web-view))
  
  (defcfun "webkit_web_view_can_paste_clipboard" :boolean
    (web-view webkit-web-view))
  
  (defcfun "webkit_web_view_cut_clipboard" :void
  