according to the keyboard used. If the keyboard has both a Backspace
key and a Delete key, and both are mapped to their usual meanings, the
option's default value is set to t, so that Backspace can be used to
-delete backward, and Delete can be used used to delete forward
+delete backward, and Delete can be used to delete forward.
If not running under a window system, setting this option accomplishes
a similar effect by mapping C-h, which is usually generated by the