LICENSE

CeCILL 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 CeCILL[1] 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

The purpose of this Free Software license agreement is to grant users the right
to modify and redistribute the software governed by this license within the
framework of an open source distribution model.

The exercising of these rights is conditional upon certain obligations for
users so as to preserve this status for all subsequent redistributions.

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.

GNU GPL: means the GNU General Public License version 2 or any subsequent
version, as published by the Free Software Foundation Inc.

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 future Licensees unhindered access to the
full Source Code of the Software by indicating how to access it, 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

When the Licensee makes a Contribution to the Software, the terms and
conditions for the distribution of the resulting Modified Software become
subject to all the provisions of this Agreement.

The Licensee is authorized to distribute the Modified 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 Modified Software is
redistributed, the Licensee allows future Licensees unhindered access to the
full source code of the Modified Software by indicating how to access it, it
being understood that the additional cost of acquiring the source code shall
not exceed the cost of transferring the data.

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 COMPATIBILITY WITH THE GNU GPL

The Licensee can include a code that is subject to the provisions of one of the
versions of the GNU GPL in the Modified or unmodified Software, and distribute
that entire code under the terms of the same version of the GNU GPL.

The Licensee can include the Modified or unmodified Software in a code that is
subject to the provisions of one of the versions of the GNU GPL, and distribute
that entire code under the terms of the same version of the GNU GPL.

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, subject to the provisions of Article 5.3.4.

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.

[1] CeCILL stands for Ce(a) C(nrs) I(nria) L(ogiciel) L(ibre)
Version 2.0 dated 2006-09-05.