CeCILL-B FREE SOFTWARE LICENSE AGREEMENT

Notice

This Agreement is a Free Software license agreement that is the result of
discussions between its authors in order to ensure compliance with the two
main principles guiding its drafting:

*  firstly, compliance with the principles governing the distribution of
Free Software: access to source code, broad rights granted to users,

*  secondly, the election of a governing law, French law, with which it is
conformant, both as regards the law of torts and intellectual property law,
and the protection that it offers to both authors and holders of the
economic rights over software.

The authors of the CeCILL¹ license are:

Commissariat à l'Energie Atomique - CEA, a public scientific, technical and
industrial research establishment, having its principal place of business
at 25 rue Leblanc, immeuble Le Ponant D, 75015 Paris, France.

Centre National de la Recherche Scientifique - CNRS, a public scientific
and technological establishment, having its principal place of business at
3 rue Michel-Ange, 75794 Paris cedex 16, France.

Institut National de Recherche en Informatique et en Automatique - INRIA, a
public scientific and technological establishment, having its principal
place of business at Domaine de Voluceau, Rocquencourt, BP 105, 78153 Le
Chesnay cedex, France.

Preamble  This Agreement is an open source software license intended to
give users significant freedom to modify and redistribute the software
licensed hereunder.
The exercising of this freedom is conditional upon a strong obligation of
giving credits for everybody that distributes a software incorporating a
software ruled by the current license so as all contributions to be
properly identified and acknowledged.

In consideration of access to the source code and the rights to copy,
modify and redistribute granted by the license, users are provided only
with a limited warranty and the software's author, the holder of the
economic rights, and the successive licensors only have limited liability.

In this respect, the risks associated with loading, using, modifying and/or
developing or reproducing the software by the user are brought to the
user's attention, given its Free Software status, which may make it
complicated to use, with the result that its use is reserved for developers
and experienced professionals having in-depth computer knowledge. Users are
therefore encouraged to load and test the suitability of the software as
regards their requirements in conditions enabling the security of their
systems and/or data to be ensured and, more generally, to use and operate
it in the same conditions of security. This Agreement may be freely
reproduced and published, provided it is not altered, and that no
provisions are either added or removed herefrom.

This Agreement may apply to any or all software for which the holder of the
economic rights decides to submit the use thereof to its provisions.

Article 1 -  DEFINITIONS
For the purpose of this Agreement, when the following expressions commence
with a capital letter, they shall have the following meaning:

Agreement: means this license agreement, and its possible subsequent
versions and annexes.

Software: means the software in its Object Code and/or Source Code form
and, where applicable, its documentation, "as is" when the Licensee accepts
the Agreement.

Initial Software: means the Software in its Source Code and possibly its
Object Code form and, where applicable, its documentation, "as is" when it
is first distributed under the terms and conditions of the Agreement.

Modified Software: means the Software modified by at least one
Contribution.

Source Code: means all the Software's instructions and program lines to
which access is required so as to modify the Software.

Object Code: means the binary files originating from the compilation of the
Source Code.

Holder: means the holder(s) of the economic rights over the Initial
Software.

Licensee: means the Software user(s) having accepted the Agreement.

Contributor: means a Licensee having made at least one Contribution.

Licensor: means the Holder, or any other individual or legal entity, who
distributes the Software under the Agreement.

Contribution: means any or all modifications, corrections, translations,
adaptations and/or new functions integrated into the Software by any or all
Contributors, as well as any or all Internal Modules.

Module: means a set of sources files including their documentation that
enables supplementary functions or services in addition to those offered by
the Software.

External Module: means any or all Modules, not derived from the Software,
so that this Module and the Software run in separate address spaces, with
one calling the other when they are run.

Internal Module: means any or all Module, connected to the Software so that
they both execute in the same address space.

Parties: mean both the Licensee and the Licensor.

These expressions may be used both in singular and plural form.

Article 2 -  PURPOSE
The purpose of the Agreement is the grant by the Licensor to the Licensee
of a non-exclusive, transferable and worldwide license for the Software as
set forth in Article 5 hereinafter for the whole term of the protection
granted by the rights over said Software.

Article 3 -  ACCEPTANCE

3.1  The Licensee shall be deemed as having accepted the terms and
conditions of this Agreement upon the occurrence of the first of the
following events:

(i)  loading the Software by any or all means, notably, by downloading from
a remote server, or by loading from a physical medium;

(ii)  the first time the Licensee exercises any of the rights granted
hereunder.

3.2  One copy of the Agreement, containing a notice relating to the
characteristics of the Software, to the limited warranty, and to the fact
that its use is restricted to experienced users has been provided to the
Licensee prior to its acceptance as set forth in Article 3.1 hereinabove,
and the Licensee hereby acknowledges that it has read and understood it.

Article 4 -  EFFECTIVE DATE AND TERM

4.1  EFFECTIVE DATE
The Agreement shall become effective on the date when it is accepted by the
Licensee as set forth in Article 3.1.

4.2  TERM
The Agreement shall remain in force for the entire legal term of protection
of the economic rights over the Software.

Article 5 -  SCOPE OF RIGHTS GRANTED
The Licensor hereby grants to the Licensee, who accepts, the following
rights over the Software for any or all use, and for the term of the
Agreement, on the basis of the terms and conditions set forth hereinafter.

Besides, if the Licensor owns or comes to own one or more patents
protecting all or part of the functions of the Software or of its
components, the Licensor undertakes not to enforce the rights granted by
these patents against successive Licensees using, exploiting or modifying
the Software. If these patents are transferred, the Licensor undertakes to
have the transferees subscribe to the obligations set forth in this
paragraph.

5.1  RIGHT OF USE
The Licensee is authorized to use the Software, without any limitation as
to its fields of application, with it being hereinafter specified that this
comprises:

1.  permanent or temporary reproduction of all or part of the Software by
any or all means and in any or all form.

2.  loading, displaying, running, or storing the Software on any or all
medium.

3.  entitlement to observe, study or test its operation so as to determine
the ideas and principles behind any or all constituent elements of said
Software. This shall apply when the Licensee carries out any or all
loading, displaying, running, transmission or storage operation as regards
the Software, that it is entitled to carry out hereunder.

5.2  ENTITLEMENT TO MAKE CONTRIBUTIONS
The right to make Contributions includes the right to translate, adapt,
arrange, or make any or all modifications to the Software, and the right to
reproduce the resulting software.

The Licensee is authorized to make any or all Contributions to the Software
provided that it includes an explicit notice that it is the author of said
Contribution and indicates the date of the creation thereof.

5.3  RIGHT OF DISTRIBUTION
In particular, the right of distribution includes the right to publish,
transmit and communicate the Software to the general public on any or all
medium, and by any or all means, and the right to market, either in
consideration of a fee, or free of charge, one or more copies of the
Software by any means.

The Licensee is further authorized to distribute copies of the modified or
unmodified Software to third parties according to the terms and conditions
set forth hereinafter.

5.3.1.  DISTRIBUTION OF SOFTWARE WITHOUT MODIFICATION
The Licensee is authorized to distribute true copies of the Software in
Source Code or Object Code form, provided that said distribution complies
with all the provisions of the Agreement and is accompanied by:

1.  a copy of the Agreement,

2.  a notice relating to the limitation of both the Licensor's warranty and
liability as set forth in Articles 8 and 9,

and that, in the event that only the Object Code of the Software is
redistributed, the Licensee allows effective access to the full Source Code
of the Software at a minimum during the entire period of its distribution
of the Software, it being understood that the additional cost of acquiring
the Source Code shall not exceed the cost of transferring the data.

5.3.2.  DISTRIBUTION OF MODIFIED SOFTWARE
If the Licensee makes any Contribution to the Software, the resulting
Modified Software may be distributed under a license agreement other than
this Agreement subject to compliance with the provisions of Article 5.3.4.

5.3.3.  DISTRIBUTION OF EXTERNAL MODULES
When the Licensee has developed an External Module, the terms and
conditions of this Agreement do not apply to said External Module, that may
be distributed under a separate license agreement.

5.3.4.  CREDITS
Any Licensee who may distribute a Modified Software hereby expressly agrees
to:

1.  indicate in the related documentation that it is based on the Software
licensed hereunder, and reproduce the intellectual property notice for the
Software,

2.  ensure that written indications of the Software intended use,
intellectual property notice and license hereunder are included in easily
accessible format from the Modified Software interface,

3.  mention, on a freely accessible website describing the Modified
Software, at least throughout the distribution term thereof, that it is
based on the Software licensed hereunder, and reproduce the Software
intellectual property notice,

4.  where it is distributed to a third party that may distribute a Modified
Software without having to make its source code available, make its best
efforts to ensure that said third party agrees to comply with the
obligations set forth in this Article .

If the Software, whether or not modified, is distributed with an External
Module designed for use in connection with the Software, the Licensee shall
submit said External Module to the foregoing obligations.

5.3.5.  COMPATIBILITY WITH THE CeCILL AND CeCILL-C LICENSES
Where a Modified Software contains a Contribution subject to the CeCILL
license, the provisions set forth in Article 5.3.4 shall be optional.

A Modified Software may be distributed under the CeCILL-C license. In such
a case the provisions set forth in Article 5.3.4 shall be optional.

Article 6 -  INTELLECTUAL PROPERTY

6.1  OVER THE INITIAL SOFTWARE
The Holder owns the economic rights over the Initial Software. Any or all
use of the Initial Software is subject to compliance with the terms and
conditions under which the Holder has elected to distribute its work and no
one shall be entitled to modify the terms and conditions for the
distribution of said Initial Software.

The Holder undertakes that the Initial Software will remain ruled at least
by this Agreement, for the duration set forth in Article 4.2.

6.2  OVER THE CONTRIBUTIONS
The Licensee who develops a Contribution is the owner of the intellectual
property rights over this Contribution as defined by applicable law.

6.3  OVER THE EXTERNAL MODULES
The Licensee who develops an External Module is the owner of the
intellectual property rights over this External Module as defined by
applicable law and is free to choose the type of agreement that shall
govern its distribution.

6.4  JOINT PROVISIONS
The Licensee expressly undertakes:

1.  not to remove, or modify, in any manner, the intellectual property
notices attached to the Software;

2.  to reproduce said notices, in an identical manner, in the copies of the
Software modified or not.

The Licensee undertakes not to directly or indirectly infringe the
intellectual property rights of the Holder and/or Contributors on the
Software and to take, where applicable, vis-à-vis its staff, any and all
measures required to ensure respect of said intellectual property rights of
the Holder and/or Contributors.

Article 7 -  RELATED SERVICES

7.1  Under no circumstances shall the Agreement oblige the Licensor to
provide technical assistance or maintenance services for the Software.
However, the Licensor is entitled to offer this type of services. The terms
and conditions of such technical assistance, and/or such maintenance, shall
be set forth in a separate instrument. Only the Licensor offering said
maintenance and/or technical assistance services shall incur liability
therefor.

7.2  Similarly, any Licensor is entitled to offer to its licensees, under
its sole responsibility, a warranty, that shall only be binding upon
itself, for the redistribution of the Software and/or the Modified
Software, under terms and conditions that it is free to decide. Said
warranty, and the financial terms and conditions of its application, shall
be subject of a separate instrument executed between the Licensor and the
Licensee.

Article 8 -  LIABILITY

8.1  Subject to the provisions of Article 8.2, the Licensee shall be
entitled to claim compensation for any direct loss it may have suffered
from the Software as a result of a fault on the part of the relevant
Licensor, subject to providing evidence thereof.

8.2  The Licensor's liability is limited to the commitments made under this
Agreement and shall not be incurred as a result of in particular: (i) loss
due the Licensee's total or partial failure to fulfill its obligations,
(ii) direct or consequential loss that is suffered by the Licensee due to
the use or performance of the Software, and (iii) more generally, any
consequential loss. In particular the Parties expressly agree that any or
all pecuniary or business loss (i.e. loss of data, loss of profits,
operating loss, loss of customers or orders, opportunity cost, any
disturbance to business activities) or any or all legal proceedings
instituted against the Licensee by a third party, shall constitute
consequential loss and shall not provide entitlement to any or all
compensation from the Licensor.

Article 9 -  WARRANTY

9.1  The Licensee acknowledges that the scientific and technical
state-of-the-art when the Software was distributed did not enable all
possible uses to be tested and verified, nor for the presence of possible
defects to be detected. In this respect, the Licensee's attention has been
drawn to the risks associated with loading, using, modifying and/or
developing and reproducing the Software which are reserved for experienced
users.
The Licensee shall be responsible for verifying, by any or all means, the
suitability of the product for its requirements, its good working order,
and for ensuring that it shall not cause damage to either persons or
properties.

9.2  The Licensor hereby represents, in good faith, that it is entitled to
grant all the rights over the Software (including in particular the rights
set forth in Article 5).

9.3  The Licensee acknowledges that the Software is supplied "as is" by the
Licensor without any other express or tacit warranty, other than that
provided for in Article 9.2 and, in particular, without any warranty as to
its commercial value, its secured, safe, innovative or relevant nature.
Specifically, the Licensor does not warrant that the Software is free from
any error, that it will operate without interruption, that it will be
compatible with the Licensee's own equipment and software configuration,
nor that it will meet the Licensee's requirements.

9.4  The Licensor does not either expressly or tacitly warrant that the
Software does not infringe any third party intellectual property right
relating to a patent, software or any other property right. Therefore, the
Licensor disclaims any and all liability towards the Licensee arising out
of any or all proceedings for infringement that may be instituted in
respect of the use, modification and redistribution of the Software.
Nevertheless, should such proceedings be instituted against the Licensee,
the Licensor shall provide it with technical and legal assistance for its
defense. Such technical and legal assistance shall be decided on a
case-by-case basis between the relevant Licensor and the Licensee pursuant
to a memorandum of understanding. The Licensor disclaims any and all
liability as regards the Licensee's use of the name of the Software. No
warranty is given as regards the existence of prior rights over the name of
the Software or as regards the existence of a trademark.

Article 10 -  TERMINATION

10.1  In the event of a breach by the Licensee of its obligations
hereunder, the Licensor may automatically terminate this Agreement thirty
(30) days after notice has been sent to the Licensee and has remained
ineffective.

10.2  A Licensee whose Agreement is terminated shall no longer be
authorized to use, modify or distribute the Software. However, any licenses
that it may have granted prior to termination of the Agreement shall remain
valid subject to their having been granted in compliance with the terms and
conditions hereof.

Article 11 -  MISCELLANEOUS

11.1  EXCUSABLE EVENTS
Neither Party shall be liable for any or all delay, or failure to perform
the Agreement, that may be attributable to an event of force majeure, an
act of God or an outside cause, such as defective functioning or
interruptions of the electricity or telecommunications networks, network
paralysis following a virus attack, intervention by government authorities,
natural disasters, water damage, earthquakes, fire, explosions, strikes and
labor unrest, war, etc.

11.2  Any failure by either Party, on one or more occasions, to invoke one
or more of the provisions hereof, shall under no circumstances be
interpreted as being a waiver by the interested Party of its right to
invoke said provision(s) subsequently.

11.3  The Agreement cancels and replaces any or all previous agreements,
whether written or oral, between the Parties and having the same purpose,
and constitutes the entirety of the agreement between said Parties
concerning said purpose. No supplement or modification to the terms and
conditions hereof shall be effective as between the Parties unless it is
made in writing and signed by their duly authorized representatives.

11.4  In the event that one or more of the provisions hereof were to
conflict with a current or future applicable act or legislative text, said
act or legislative text shall prevail, and the Parties shall make the
necessary amendments so as to comply with said act or legislative text. All
other provisions shall remain effective. Similarly, invalidity of a
provision of the Agreement, for any reason whatsoever, shall not cause the
Agreement as a whole to be invalid.

11.5  LANGUAGE
The Agreement is drafted in both French and English and both versions are
deemed authentic.

Article 12 -  NEW VERSIONS OF THE AGREEMENT

12.1  Any person is authorized to duplicate and distribute copies of this
Agreement.

12.2  So as to ensure coherence, the wording of this Agreement is protected
and may only be modified by the authors of the License, who reserve the
right to periodically publish updates or new versions of the Agreement,
each with a separate number. These subsequent versions may address new
issues encountered by Free Software.

12.3  Any Software distributed under a given version of the Agreement may
only be subsequently distributed under the same version of the Agreement or
a subsequent version.

Article 13 -  GOVERNING LAW AND JURISDICTION

13.1  The Agreement is governed by French law. The Parties agree to
endeavor to seek an amicable solution to any disagreements or disputes that
may arise during the performance of the Agreement.

13.2  Failing an amicable solution within two (2) months as from their
occurrence, and unless emergency proceedings are necessary, the
disagreements or disputes shall be referred to the Paris Courts having
jurisdiction, by the more diligent Party.

Version 1.0 dated 2006-09-05.

1 CeCILL stands for Ce(a) C(nrs) I(nria) L(ogiciel) L(ibre)
