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The Kill Ring
All killed text is recorded in the "kill ring", a list of blocks of
text that have been killed. There is only one kill ring, used in all
buffers, so you can kill text in one buffer and yank it in another
buffer. This is the usual way to move text from one file to another.
(Note: Accumulating Text, for some other ways.)
If you have two separate Emacs processes, you cannot use the kill
ring to move text. If you are using Lucid GNU Emacs under X, however,
you can use the X selection mechanism to move text from one to another.
If you are using Lucid GNU Emacs under X and have one Emacs process
with multiple screens, they do share the same kill ring. You can kill
or copy text in one Emacs screen, then yank it in the other screen
belonging to the same process.
The command `C-y' (`yank') reinserts the text of the most recent
kill. It leaves the cursor at the end of the text and sets the mark at
the beginning of the text. Note: Mark.
`C-u C-y' yanks the text, leaves the cursor in front of the text,
and sets the mark after it, if the argument is with just a `C-u'. Any
other argument, including `C-u' and digits, has different results,
described below, under "Yanking Earlier Kills".
To copy a block of text, you can also use `M-w'
(`copy-region-as-kill'), which copies the region into the kill ring
without removing it from the buffer. `M-w' is similar to `C-w' followed
by `C-y' but does not mark the buffer as "modified" and does not
actually cut anything.
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