(lispref.info)Buffers


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Buffers
*******

   A "buffer" is a Lisp object containing text to be edited.  Buffers
are used to hold the contents of files that are being visited; there may
also be buffers which are not visiting files.  While several buffers may
exist at one time, exactly one buffer is designated the "current
buffer" at any time.  Most editing commands act on the contents of the
current buffer.  Each buffer, including the current buffer, may or may
not be displayed in any windows.

* Buffer Basics
What is a buffer?
* Buffer Names
Accessing and changing buffer names.
* Buffer File Name
The buffer file name indicates which file is visited.
* Buffer Modification
A buffer is "modified" if it needs to be saved.
* Modification Time
Determining whether the visited file was changed "behind Emacs's back".
* Read Only Buffers
Modifying text is not allowed in a read-only buffer.
* The Buffer List
How to look at all the existing buffers.
* Creating Buffers
Functions that create buffers.
* Killing Buffers
Buffers exist until explicitly killed.
* Current Buffer
Designating a buffer as current so primitives will access its contents.

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