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

  Syntax:  DISABLE GRAMMAR PREFIX prefix

  Disables a prefix associated with a customized command language.

  LSE keeps the enabled grammar prefixes in a stack in the order in
  which they were defined.  This command deletes a prefix from anywhere
  in the stack.  If the prefix is the only one in the stack, no action
  is taken.  The default is to delete the prefix at the top.