doc /ˈdɑk/
  文檔文件,(計算機中的)文檔文件
  doc
       n 1: a licensed medical practitioner; "I felt so bad I went to
            see my doctor" [syn: doctor, physician, MD, Dr.,
             medico]
       2: the United States federal department that promotes and
          administers domestic and foreign trade (including
          management of the census and the patent office); created
          in 1913 [syn: Department of Commerce, Commerce
          Department, Commerce]