| There are many editing commands that
can be used to modify existing text in a file. These include commands
for deleting, undoing, repeating, and changing text as well as those
for copying and pasting. The majority of these commands are entered
while in command mode. Commands preceded by a colon indicate to the
user that the command is to be entered while in last-line mode.
Deleting Text
To delete text, you must be in command mode. While in command mode,
position the cursor to the desired location and use the options shown
in Figure
to delete text. Note that these commands are case-sensitive and are
entered without the Enter key.
Undoing, Repeating, and Changing Text
To change text, cancel or repeat edit functions, use the commands
shown in Figure .
Many of these commands change you to Insert mode until you press
Escape.
Copying and Pasting Text
To copy and paste text, use the following options in Figure 
Note - Both delete (dw
and dd
commands) and yank write to a buffer (memory). When yanking,
deleting, and pasting, the put
commands insert the text differently depending on whether you are
pasting a word(s) or a line(s).
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