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
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