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
restore text just erased
F--to move cursor one character to the right G--to move
cursor one word to the left
H--to move curse one line down I--to insert gage number
J--to print a file K--to move cursor to the bottom right of the
screen L--to insert date and time M--to copy a file
N--to rename a file O--to erase a file
P--to erase a line ( )移动光标至屏幕右下端 ( )打印文件