Description

   Librarian record access may be set to move mode (the default
   set by LBR$SET_MOVE) or locate mode. The setting affects the
   operation of the LBR$GET_RECORD routine.

   If move mode is set (the default), LBR$GET_RECORD copies the
   requested record to the specified user buffer. If locate mode is
   set, the record is not copied. Instead, the outbufdes descriptor
   is set to reference the internal LBR subroutine buffer that
   contains the record.