@c This is part of the Emacs manual.
-@c Copyright (C) 1985-1987, 1993-1995, 1997, 2000-2015 Free Software
+@c Copyright (C) 1985-1987, 1993-1995, 1997, 2000-2016 Free Software
@c Foundation, Inc.
@c See file emacs.texi for copying conditions.
@code{yank-pop-change-selection} to @code{t}, then @kbd{M-y} saves the
new yank to the clipboard.
-@vindex x-select-enable-clipboard
+@vindex select-enable-clipboard
To prevent kill and yank commands from accessing the clipboard,
-change the variable @code{x-select-enable-clipboard} to @code{nil}.
+change the variable @code{select-enable-clipboard} to @code{nil}.
@cindex clipboard manager
@vindex x-select-enable-clipboard-manager
data to the clipboard manager, change the variable
@code{x-select-enable-clipboard-manager} to @code{nil}.
-@vindex x-select-enable-primary
+@vindex select-enable-primary
@findex clipboard-kill-region
@findex clipboard-kill-ring-save
@findex clipboard-yank
Prior to Emacs 24, the kill and yank commands used the primary
selection (@pxref{Primary Selection}), not the clipboard. If you
-prefer this behavior, change @code{x-select-enable-clipboard} to
-@code{nil}, @code{x-select-enable-primary} to @code{t}, and
+prefer this behavior, change @code{select-enable-clipboard} to
+@code{nil}, @code{select-enable-primary} to @code{t}, and
@code{mouse-drag-copy-region} to @code{t}. In this case, you can use
the following commands to act explicitly on the clipboard:
@code{clipboard-kill-region} kills the region and saves it to the
rectangle. @xref{Killing}. The mode persists only as long as the
region is active.
+Unlike the standard region, the region-rectangle can have its corners
+extended past the end of buffer, or inside stretches of white space
+that point normally cannot enter, like the TAB.
+
+@findex rectangle-exchange-point-and-mark
+@findex exchange-point-and-mark@r{, in rectangle-mark-mode}
+@kindex C-x C-x@r{, in rectangle-mark-mode}
+When the region is in rectangle-mark-mode, @kbd{C-x C-x} runs the
+command @code{rectangle-exchange-point-and-mark}, which cycles between
+the four corners of the region-rectangle. This comes in handy if you
+want to modify the dimensions of the region-rectangle before invoking
+an operation on the marked text.
+
@node CUA Bindings
@section CUA Bindings
@findex cua-mode