Syntax:  SET PROMPT KEYPAD prompt_keypad

  Specifies the available key bindings for prompting.

  This command allows you to specify which set of key bindings you want
  available at prompts:  VMSLSE style key bindings (compatible with LSE
  Version 3.1), the default editing (standard EDT or EVE) key bindings,
  or user customized key bindings as used in your regular editing
  buffers.

  When using user-defined or default key bindings, LSE stores responses
  to prompts in a special buffer.  The prompt area (at the bottom of
  the screen) is essentially its own special buffer.  As such, some
  keys act differently than in VMSLSE key bindings because that style
  of prompting is not implemented as a separate buffer.