The following names are used for special characters:

     CTRL_A      ASCII   1   Control-A
     ...
     CTRL_Z      ASCII  26   Control-Z
     TAB         ASCII   9   Tab character
     RETURN (NL) ASCII  10   New-line or return character
     LF          ASCII  10   Line-feed character (Windows)
     CR          ASCII  13   Carriage-return character (Windows)
     ESC         ASCII  27   Escape character
     SPACE       ASCII  32   One-character blank

The following names are used for special keys:

     BACK or BACKSPACE      The <- key
     CTRL_A .. CTRL_Z       Control-A - Control-Z
     CTRL_caret             Control-^ (=CTRL_6)
     DEL                    The Del key
     DOWN                   The Cursor down key
     ESC                    The Esc key
     ENTER                  The bottom right-hand key on the numeric key-pad,
                            which forces double-ESC termination of a command.
     F01..F10               Function keys 1 - 10
     F11..F20               Function keys 1 - 10, shifted
     HELP                   The Help key, used as function key F00
     LEFT                   The Cursor left key
     RETURN                 The Return key
     RIGHT                  The Cursor right key
     SPACE                  The space-bar
     UNDERSCORE             The underscore character: _
     UP                     The Cursor up key