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Info Node: (emacs)Split Window

(emacs)Split Window


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Splitting Windows
=================

`C-x 2'
     Split the selected window into two windows, one above the other
     (`split-window-vertically').

`C-x 3'
     Split the selected window into two windows positioned side by side
     (`split-window-horizontally').

`C-Mouse-2'
     In the mode line or scroll bar of a window, split that window.

   The command `C-x 2' (`split-window-vertically') breaks the selected
window into two windows, one above the other.  Both windows start out
displaying the same buffer, with the same value of point.  By default
the two windows each get half the height of the window that was split; a
numeric argument specifies how many lines to give to the top window.

   `C-x 3' (`split-window-horizontally') breaks the selected window
into two side-by-side windows.  A numeric argument specifies how many
columns to give the one on the left.  A line of vertical bars separates
the two windows.  Windows that are not the full width of the screen
have mode lines, but they are truncated.  On terminals where Emacs does
not support highlighting, truncated mode lines sometimes do not appear
in inverse video.

   You can split a window horizontally or vertically by clicking
`C-Mouse-2' in the mode line or the scroll bar.  (This does not work in
scroll bars implemented by X toolkits.)  The line of splitting goes
through the place where you click: if you click on the mode line, the
new scroll bar goes above the spot; if you click in the scroll bar, the
mode line of the split window is side by side with your click.

   When a window is less than the full width, text lines too long to
fit are frequent.  Continuing all those lines might be confusing.  The
variable `truncate-partial-width-windows' can be set non-`nil' to force
truncation in all windows less than the full width of the screen,
independent of the buffer being displayed and its value for
`truncate-lines'.  Note: Continuation Lines.

   Horizontal scrolling is often used in side-by-side windows.  Note:
Display.

   If `split-window-keep-point' is non-`nil', the default, both of the
windows resulting from `C-x 2' inherit the value of point from the
window that was split.  This means that scrolling is inevitable.  If
this variable is `nil', then `C-x 2' tries to avoid scrolling the text
currently visible on the screen, by putting point in each window at a
position already visible in the window.  It also selects whichever
window contain the screen line that the cursor was previously on.  Some
users prefer the latter mode on slow terminals.


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