Rebol 程式設計/ctx-access

CTX-ACCESS 是一個值物件

   data            object!   [set-face* get-face* clear-face* reset-face*]
   data-state      object!   [set-face* get-face* clear-face* reset-face*]
   data-number     object!   [set-face* get-face* clear-face* reset-face*]
   data-find       object!   [set-face* get-face* clear-face* reset-face*]
   data-pick       object!   [set-face* get-face* clear-face* reset-face*]
   text            object!   [set-face* get-face* clear-face* reset-face*]
   field           object!   [set-face* get-face* clear-face* reset-face*]
   image           object!   [set-face* get-face* clear-face*]
   panel           object!   [self set-find-var set-face* get-face* clear-face* reset-face*]