(lispref.info)Window Type

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Window Type

   A "window" describes the portion of the terminal screen that Emacs
uses to display a buffer.  Every window has one associated buffer, whose
contents appear in the window.  By contrast, a given buffer may appear
in one window, no window, or several windows.

   Though many windows may exist simultaneously, one window is
designated the "selected window".  This is the window where the cursor
is (usually) displayed when Emacs is ready for a command.  The selected
window usually displays the current buffer, but this is not necessarily
the case.

   Windows are grouped on the screen into screens; each window belongs
to one and only one screen.  Note: Screen Type.

   Windows have no read syntax.  They print in hash notation, giving the
window number and the name of the buffer being displayed.  The window
numbers exist to identify windows uniquely, since the buffer displayed
in any given window can change frequently.

          => #<window 1 on objects.texi>

   Note: Windows, for a description of the functions that work on

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