Warnings about EXTEND.MAC
                               February 1987

   EXTEND.MAC is an UNSUPPORTED system subroutine  to  allow  the  run-time
   manipulation  of  large  data arrays (larger than 256K) under Fortran-10
   V11 on a KL Model B.  It is provided for  informational  purposes  only.
   It  is  not  supported  by  Digital Equipment Corporation.  Furthermore,
   Digital makes no claim that this software will ever be supported in  the
   future.



   1.0  SWAPPING SPACE

   Most uses of extended addressing applications will require a substantial
   increase in swapping space.



   2.0  KNOWN BUGS AND DEFICIENCIES

   FORDDT does not work in non-zero sections, and should not be  used  with
   any program loaded with EXTEND.REL.  There are no plans to modify FORDDT
   to support extended addressing.



   3.0  MANDATORY PATCHES FOR RELATED PRODUCTS

   MCO  13121  and  MCO  13137  are  required   for   extended   addressing
   applications  under  7.03.   They  are reproduced in the file EXTEND.PCO
   included in this saveset.



   4.0  KNOWN DEFICIENCIES IN RELATED PRODUCTS

   The following utilities and optional software do not work under extended
   addressing and should not be used when called from a non-zero section or
   from any program loaded with EXTEND.REL:

   1.  SORT

   2.  DBMS

   There are no plans to modify any of these utilities to support  extended
   addressing.

   [End of EXTEND.BWR]