region.
** Temporarily active regions
-
++++
*** The new variable shift-select-mode, non-nil by default, controls
shift-selection. When Shift Select mode is on, shift-translated
motion keys (e.g. S-left and S-down) activate and extend a temporary
region, similar to mouse-selection.
-
++++
*** Temporarily active regions, created using shift-selection or
mouse-selection, are not necessarily deactivated in the next command.
They are only deactivated after point motion commands that are not