anchor.diff:  
   ;;; ^L
   ;;; webkitwebhistoryitem.h
  -
  -(defctype webkit-web-history-item :pointer)
  -(export 'webkit-web-history-item)
   
   (defcfun "webkit_web_history_item_new" webkit-web-history-item)
   (export 'webkit-web-history-item-new)
  
positive.code: ;;; ^L
  ;;; webkitnetworkresponse.h
  
  ;; Represents the network related aspects of navigation response
  (defctype webkit-network-response :pointer)
  (export 'webkit-network-response)
  
  (defcfun "webkit_network_response_new" webkit-network-response
    (uri :string))
  (export 'webkit-network-response-new)
  
negative.code: ;;; webkitdownload.h
  ;;;
  
  (defcfun "webkit_download_new" webkit-download
    (request webkit-network-request))
  (export 'webkit-download-new)
  