You must have a SRC Modula-3 licence to run Fsub. Here it is.


                SRC Modula-3 Non-commercial License

SRC Modula-3 is distributed by Digital Equipment Corporation ("DIGITAL"),
a corporation of the Commonwealth of Massachusetts.  DIGITAL hereby grants
to you a non-transferable, non-exclusive, royalty free worldwide license
to use, copy, modify, prepare integrated and derivative works of and
distribute SRC Modula-3 for non-commercial purposes, subject to your
agreement to the following terms and conditions:

  - The SRC Modula-3 Non-commercial License shall be included in the code
    and must be retained in all copies of SRC Modula-3 (full or partial;
    original, modified, derivative, or otherwise):

  - You acquire no ownership right, title, or interest in SRC Modula-3
    except as provided herein.

  - You agree to make available to DIGITAL all improvements,
    enhancements, extensions, and modifications to SRC Modula-3 which
    are made by you or your sublicensees and distributed to others and
    hereby grant to DIGITAL an irrevocable, fully paid, worldwide, and
    non-exclusive license under your intellectual property rights,
    including patent and copyright, to use and sublicense, without
    limititation, these modifications.

  - SRC Modula-3 is a research work which is provided 'as is',
    and  DIGITAL disclaims all warranties
    with regard to this software, including all implied warranties of
    merchantability and fitness of purpose.  In no event shall DIGITAL be
    liable for any special, direct, indirect, or consequential damages or
    any damages whatsoever resulting from loss of use, data or profits,
    whether in an action of contract, negligence or other tortious action,
    arising out of or in connection with the use or performance of this
    software.


           Copyright (C) 1990 Digital Equipment Corporation
                         All Rights Reserved