Licence.txt                                                           v9.45.11
Robin Shirley                                                       18 July 02


       Licence for Academic and other Non-Profit Use of Crysfire 2002


The Crysfire 2002 suite is licensed free of charge for all academic and other
non-profit use, subject to the conditions of use as set out below (see the
section "Conditions of Use"), to the general limitations as set out below (see
the section "General Limitations") and as long as the copyright of it and of
all its parts is respected (see the section "Copyright").

Users will be asked to confirm their acceptance of these licensing terms and
conditions at the start of each Crysfire run.

                                                               Robin Shirley

This document is intended to be viewed or printed in Courier or some other
monospaced font.


                          Commercial Licensing

Commercial licences for the Crysfire 2002 system are also available, the charge
for which covers the use of all user interfaces and adaptations in the Crysfire
system for which I hold the copyright (contributed code remains free of
charge).  The current rates are shown in note 2 below.  For further details and
for confidential consultancy, please contact me at R.Shirley@surrey.ac.uk.


                            Conditions of Use

For non-profit use, the following conditions apply:

1)  This software may only be distributed on the same terms that it was
    received, which is freely for non-profit use.  Neither the original
    versions nor any derived or modified versions may be sold or incorporated
    in any commercially distributed system, without the express permission in
    writing of the relevant copyright holders.  These terms shall be binding
    on all subsequent recipients.

2)  Users who are employees of a commercial company may only use Crysfire under
    this free licence if:

    (a) their use is exclusively for academic or other non-profit purposes;
    (b) their employer makes no use of any of their results for any purpose,
        including publicity;
    (c) Crysfire is installed and used for this purpose only on non-company
        computer(s).

3)  If use of the Crysfire suite makes possible a published paper, then both
    the Crysfire suite itself and any indexing programs that contributed
    materially to this result should be cited in the references section of the
    paper (an example Crysfire 2002 reference is given below, for references to
    the indexing programs, see the Crysfire manual: Crysfire.rtf ).

Reference for Crysfire Suite

R. Shirley (2002), "The Crysfire 2002 System for Automatic Powder Indexing:
  User's Manual", The Lattice Press, 41 Guildford Park Avenue, Guildford,
  Surrey  GU2 7NL, England.


                            General Limitations

Crysfire assists users to find possible solutions to the powder-indexing
problem, in the form of complete or partial unit cells.  Because this is
a complex problem in heuristics and induction which does not permit solutions
to be identified with certainty (until they are confirmed by structure
determination), any trial cells that are reported can only be suggestions,
and the final responsibility for any decisions must lie with the user.

Although every effort has been made to ensure that the software in the Crysfire
system operates correctly and in accordance with its documentation, Crysfire is
distributed strictly "as is".  Responsibility for interpreting its output lies
exclusively with the user and no liability direct or indirect shall be incurred
by any author or distributor for any losses that may result from its output or
any interpretation of its output.  It is the position of myself and all other
contributing authors that, since the output can only contain suggestions for
informed evaluation by the user, no reasonable use of the system can give rise
to any liability.

It is a condition for using Crysfire that, as user, you understand and accept
this situation.


                                 Copyright

The Crysfire system is freely available for non-profit use, but it is not
public domain.  Copyright in all its parts is asserted by and reserved by the
relevant authors.

Thus the overall Crysfire system and user interfaces, including its scripts and
its associated programs (CFmain, CFconfrm, DelifNul, WhereAmI, Qdat, ITlog,
DVlog, TRlog, VRatio, QHead, WF2Crys, XF2Crys, UDI2Crys, Crys2CIF, etc) as
listed above (but excluding indexing-related programs contributed by other
authors) are  R.Shirley, 2002.

Similarly, copyright (or copyleft) is reserved by the various authors of the
indexing programs (including myself, where applicable).  Derivative copyright
in the adaptations and extensions to the indexing programs made to support the
user interfaces within Crysfire is  R.Shirley, 2002, subject to the rights of
the authors of the relevant base versions of those programs.

Licensing fees for commercial use of Crysfire cover only my user interfaces and
modifications to those indexing programs, and expressly make no charge for any
contributed code, which is distributed freely in the same spirit that it was
received.


                                   Notes

1)  The Crysfire 2002 system may be distributed and copied to other academic
    and non-profit users, provided that the whole suite is transferred as
    embodied in its distribution zipfile, apart from authorised updates (for
    example, from the CCP14 website) and any minor modifications that may be
    needed for it to run in a particular computing environment.  Users are
    asked to send details of any suggested corrections and/or enhancements
    to R.Shirley@surrey.ac.uk, so that all users may benefit from them.

2)  Commercial licence fees (For UK in pounds sterling, for rest of the EU
    in euros, for USA in dollars, for rest of the world in pounds sterling):

                                                   Pounds     Euros   Dollars

    Single-user/computer (1 named user on            325       500      500
      several computers, or 1 computer used by
      one user at a time, who is the licence-holder
      or an employee of the licence-holder)

    Site licence (any number of concurrent           650      1000     1000
      users/computers at a single company site,
      who are employees of the licence-holder)

    Corporate licence (any number of concurrent     1300      2000     2000
      users and computers at multiple sites
      belonging to the corporate group holding
      the licence, by employees of that group)

    These prices are as at 18 July 2002 and may be varied without notice, for
    example if the relevant exchange rates alter by more than 5%.

    Commercial licences are unlimited as to time but are limited to the major 
    version of Crysfire for which they were issued (in this case Crysfire 2002)
    and to any minor revisions and updates which may be distributed for that
    version.

    Commercial licence holders will be entitled to purchase future major
    releases of Crysfire at a substantial discount.

    Commercial licences may be transferred permanently to other named users, 
    sites or organisations on payment of a 10% re-registration fee.  No charge
    will be made for transferring a single-computer licence to another named
    computer within the same organisation, provided this is done infrequently
    and by prior agreement (however, retrospective transfers will normally be 
    accepted in cases of emergency, such as computer failure or loss).

    a) Single-user/computer licences, if for a named user, include off-site use
    by that named user on a portable laptop computer.  If for a named computer,
    off-site use is only included if the laptop computer is the named computer.
    b) Site licences include temporary off-site use on portable laptop computers
    by users normally based at that named site, and on-site use by temporary
    visitors at that site.
    c) Corporate licences include temporary off-site use on a portable laptop 
    computer by persons who would be entitled under the licence to use the
    software on-site, and temporary use by visitors at sites belonging to 
    the named group.

    It is suggested that intending commercial users should show this agreement
    to their organisation's licensing-compliance officer (or equivalent), to
    ensure that the appropriate licence-type has been specified.  In cases
    where there is doubt whether the proposed licence-type will include all
    anticipated use, it will usually be possible to resolve this by specifying
    the next higher licence-type.  The differences in price are expected not
    to be significant for most potential user organisations.

    Because the results of Crysfire runs are only ever advisory (and accepted
    as such by the user at the start of each run), regulatory issues should 
    be minimal.

    No charge has been made under these licences for any contributed code,
    which remains copyright by its authors but is distributed free of charge.

3)  This document is to be interpreted under English law.



