Library /sys$common/syshlp/lse$menu.hlb DELETE_KEY  *Conan The Librarian (sorry for the slow response - running on an old VAX)

  Syntax:  DELETE KEY user_key_name

  Deletes a user key definition.

  If the key is a printing key, LSE restores the original function of
  inserting a printing character at the current cursor position;
  otherwise, the key is undefined.