@defopt transient-mark-mode
@cindex Transient Mark mode
-This variable enables Transient Mark mode, in which every
-buffer-modifying primitive sets @code{deactivate-mark}. The consequence
-of this is that commands that modify the buffer normally make the mark
-inactive.
+This variable if non-@code{nil} enables Transient Mark mode, in which
+every buffer-modifying primitive sets @code{deactivate-mark}. The
+consequence of this is that commands that modify the buffer normally
+make the mark inactive.
@end defopt
@defvar deactivate-mark