Readline Movement Commands
--------------------------

   The above table describes the most basic possible keystrokes that
you need in order to do editing of the input line.  For your
convenience, many other commands have been added in addition to <C-b>,
<C-f>, <C-d>, and <DEL>.  Here are some commands for moving more rapidly
about the line.

<C-a>
     Move to the start of the line.

<C-e>
     Move to the end of the line.

<M-f>
     Move forward a word.

<M-b>
     Move backward a word.

<C-l>
     Clear the screen, reprinting the current line at the top.

   Notice how <C-f> moves forward a character, while <M-f> moves
forward a word.  It is a loose convention that control keystrokes
operate on characters while meta keystrokes operate on words.