File Management Commands A -- to open (edit/create) a document B --
to access the Block and Save Menu C -- to exit WINDOWS D -- to cancel a
command E -- to erase (抹去) a file F -- to copy a file G -- to rename a
file H -- to erase a character I -- to erase a word J -- to erase a
line K -- to restore text just erased I -- to move cursor one character to
the right M -- to move cursor one word to the left N -- to move cursor one
line up O -- to move cursor one line down P -- to move cursor to the top
left of the screen Q -- to move cursor to the bottom right of the screen R
-- to print a file S -- to insert page number T -- to insert a symbol U
-- to insert date and time V -- to close a file 让光标回到屏幕左上端 ( )取消一个指令