Waterschap Brabantse Delta · R&D lab · licence
EUPL-1.2; OSI-approved on 13 July 2017.Every R&D repository we open carries the same licence, the same licence
file and the same identifier. The file is byte-identical in all four — SHA-256
5f6be11b…7efa1b92 once line endings are normalised — and it is the Dutch
official version reproduced in section 5.
NOTICE; EVOLV states it in its
README.| Repository | What it is | Licence file |
|---|---|---|
RnD/EVOLV | Node-RED palette for wastewater treatment plant automation (ISA-88) | LICENSE |
RnD/RESOLV | The application shell that hosts the modules over their public contracts | LICENSES/EUPL-1.2.txt |
RnD/flowio | Framework-free core for drag-and-drop schematic editors (process, electrical, network) | LICENSES/EUPL-1.2.txt |
RnD/elecIO | The electrical engines: shape language, networks and phases, checks, wire routing, panel layout, terminal lists | LICENSES/EUPL-1.2.txt |
Third-party code bundled anywhere in these repositories keeps its own terms and its own notices — Article 5 requires exactly that, and combining it is what the compatibility list in section 4 is for.
This is a plain reading of the text, with the article each point comes from. It is a reader's map, not a substitute: only the licence text in section 5 has legal effect, and nothing here is legal advice.
The duties below start the moment you distribute or communicate the work — and the licence defines that broadly. Article 1 counts "providing access to its essential functionalities" as communication, so publishing a service built on this code triggers the same obligations as handing someone a copy. Using it privately, inside your own organisation, triggers none of them.
Copyright, patent and trademark notices, and anything referring to the licence or the disclaimer of warranties, stay exactly as they are.
Every copy you distribute or communicate carries a copy of the licence and of those notices.
A derivative work must carry prominent notices saying the work was modified, and the date of modification.
Your distribution happens under this licence or a later EUPL version. If you combine our work with a work under one of the compatible licences in the Appendix, the combined result may go out under that licence instead — and where the two conflict, the compatible licence prevails.
Ship a machine-readable copy of the source, or name a repository where it is easily and freely available for as long as you keep distributing. Distributing by electronic means adds Article 11: the channel must tell the public who the licensor is, what the licence is, and how it can be accessed.
The licence takes effect when the licensor places the words Licensed under the EUPL immediately after the copyright notice. This is the header form the European Commission publishes for source files:
Copyright (c) 2026 René de Ren / Waterschap Brabantse Delta (WBD R&D)
Licensed under the EUPL, Version 1.2 or - as soon as they will be approved by
the European Commission - subsequent versions of the EUPL (the "Licence");
You may not use this work except in compliance with the Licence.
You may obtain a copy of the Licence at:
https://joinup.ec.europa.eu/software/page/eupl
Unless required by applicable law or agreed to in writing, software distributed
under the Licence is distributed on an "AS IS" basis, WITHOUT WARRANTIES OR
CONDITIONS OF ANY KIND, either express or implied. See the Licence for the
specific language governing permissions and limitations under the Licence.
Our repositories declare the plain identifier
EUPL-1.2 without an "only" restriction, so the Article 5 default applies: a
reuser may also distribute under a later EUPL version.
Strict copyleft licences usually cannot be combined: each demands that the whole result carry its terms. The EUPL solves this from its own side. If you merge our work with a work under one of the licences below, you may release the combined derivative work under that other licence — the EUPL steps aside rather than deadlocking (Article 5, compatibility clause). The list is the licence's own Appendix, reproduced in full in section 5.
| Licence | Admitted versions |
|---|---|
| GNU General Public License (GPL) | v2, v3 |
| GNU Affero General Public License (AGPL) | v3 |
| GNU Lesser General Public Licence (LGPL) | v2.1, v3 |
| Open Software License (OSL) | v2.1, v3.0 |
| Eclipse Public License (EPL) | v1.0 |
| Mozilla Public Licence (MPL) | v2 |
| CeCILL | v2.0, v2.1 |
| Creative Commons Attribution-ShareAlike (CC BY-SA) | v3.0 Unported — for works other than software |
| European Union Public Licence (EUPL) | v1.1, v1.2 |
| Québec Free and Open-Source Licence (LiLiQ) | Reciprocity (LiLiQ-R), Strong Reciprocity (LiLiQ-R+) |
Reproduced in full. The Dutch and English versions are both official publications of the European Union and, per Article 13, carry identical legal value — read whichever you prefer. Both were parsed from the Commission's own PDFs and checked against a second independent copy; see the provenance at the foot of this page.
EUROPEAN UNION PUBLIC LICENCE v. 1.2
EUPL © the European Union 2007, 2016
This European Union Public Licence (the ‘EUPL’) applies to the Work (as defined below) which is provided under the terms of this Licence. Any use of the Work, other than as authorised under this Licence is prohibited (to the extent such use is covered by a right of the copyright holder of the Work).
The Work is provided under the terms of this Licence when the Licensor (as defined below) has placed the following notice immediately following the copyright notice for the Work:
Licensed under the EUPL
or has expressed by any other means his willingness to license under the EUPL.
In this Licence, the following terms have the following meaning:
The Licensor hereby grants You a worldwide, royalty-free, non-exclusive, sublicensable licence to do the following, for the duration of copyright vested in the Original Work:
Those rights can be exercised on any media, supports and formats, whether now known or later invented, as far as the applicable law permits so.
In the countries where moral rights apply, the Licensor waives his right to exercise his moral right to the extent allowed by law in order to make effective the licence of the economic rights here above listed.
The Licensor grants to the Licensee royalty-free, non-exclusive usage rights to any patents held by the Licensor, to the extent necessary to make use of the rights granted on the Work under this Licence.
The Licensor may provide the Work either in its Source Code form, or as Executable Code. If the Work is provided as Executable Code, the Licensor provides in addition a machine-readable copy of the Source Code of the Work along with each copy of the Work that the Licensor distributes or indicates, in a notice following the copyright notice attached to the Work, a repository where the Source Code is easily and freely accessible for as long as the Licensor continues to distribute or communicate the Work.
Nothing in this Licence is intended to deprive the Licensee of the benefits from any exception or limitation to the exclusive rights of the rights owners in the Work, of the exhaustion of those rights or of other applicable limitations thereto.
The grant of the rights mentioned above is subject to some restrictions and obligations imposed on the Licensee. Those obligations are the following:
Attribution right: The Licensee shall keep intact all copyright, patent or trademarks notices and all notices that refer to the Licence and to the disclaimer of warranties. The Licensee must include a copy of such notices and a copy of the Licence with every copy of the Work he/she distributes or communicates. The Licensee must cause any Derivative Work to carry prominent notices stating that the Work has been modified and the date of modification.
Copyleft clause: If the Licensee distributes or communicates copies of the Original Works or Derivative Works, this Distribution or Communication will be done under the terms of this Licence or of a later version of this Licence unless the Original Work is expressly distributed only under this version of the Licence — for example by communicating ‘EUPL v. 1.2 only’. The Licensee (becoming Licensor) cannot offer or impose any additional terms or conditions on the Work or Derivative Work that alter or restrict the terms of the Licence.
Compatibility clause: If the Licensee Distributes or Communicates Derivative Works or copies thereof based upon both the Work and another work licensed under a Compatible Licence, this Distribution or Communication can be done under the terms of this Compatible Licence. For the sake of this clause, ‘Compatible Licence’ refers to the licences listed in the appendix attached to this Licence. Should the Licensee's obligations under the Compatible Licence conflict with his/her obligations under this Licence, the obligations of the Compatible Licence shall prevail.
Provision of Source Code: When distributing or communicating copies of the Work, the Licensee will provide a machine-readable copy of the Source Code or indicate a repository where this Source will be easily and freely available for as long as the Licensee continues to distribute or communicate the Work.
Legal Protection: This Licence does not grant permission to use the trade names, trademarks, service marks, or names of the Licensor, except as required for reasonable and customary use in describing the origin of the Work and reproducing the content of the copyright notice.
The original Licensor warrants that the copyright in the Original Work granted hereunder is owned by him/her or licensed to him/her and that he/she has the power and authority to grant the Licence.
Each Contributor warrants that the copyright in the modifications he/she brings to the Work are owned by him/her or licensed to him/her and that he/she has the power and authority to grant the Licence.
Each time You accept the Licence, the original Licensor and subsequent Contributors grant You a licence to their contributions to the Work, under the terms of this Licence.
The Work is a work in progress, which is continuously improved by numerous Contributors. It is not a finished work and may therefore contain defects or ‘bugs’ inherent to this type of development.
For the above reason, the Work is provided under the Licence on an ‘as is’ basis and without warranties of any kind concerning the Work, including without limitation merchantability, fitness for a particular purpose, absence of defects or errors, accuracy, non-infringement of intellectual property rights other than copyright as stated in Article 6 of this Licence.
This disclaimer of warranty is an essential part of the Licence and a condition for the grant of any rights to the Work.
Except in the cases of wilful misconduct or damages directly caused to natural persons, the Licensor will in no event be liable for any direct or indirect, material or moral, damages of any kind, arising out of the Licence or of the use of the Work, including without limitation, damages for loss of goodwill, work stoppage, computer failure or malfunction, loss of data or any commercial damage, even if the Licensor has been advised of the possibility of such damage. However, the Licensor will be liable under statutory product liability laws as far such laws apply to the Work.
While distributing the Work, You may choose to conclude an additional agreement, defining obligations or services consistent with this Licence. However, if accepting obligations, You may act only on your own behalf and on your sole responsibility, not on behalf of the original Licensor or any other Contributor, and only if You agree to indemnify, defend, and hold each Contributor harmless for any liability incurred by, or claims asserted against such Contributor by the fact You have accepted any warranty or additional liability.
The provisions of this Licence can be accepted by clicking on an icon ‘I agree’ placed under the bottom of a window displaying the text of this Licence or by affirming consent in any other similar way, in accordance with the rules of applicable law. Clicking on that icon indicates your clear and irrevocable acceptance of this Licence and all of its terms and conditions.
Similarly, you irrevocably accept this Licence and all of its terms and conditions by exercising any rights granted to You by Article 2 of this Licence, such as the use of the Work, the creation by You of a Derivative Work or the Distribution or Communication by You of the Work or copies thereof.
In case of any Distribution or Communication of the Work by means of electronic communication by You (for example, by offering to download the Work from a remote location) the distribution channel or media (for example, a website) must at least provide to the public the information requested by the applicable law regarding the Licensor, the Licence and the way it may be accessible, concluded, stored and reproduced by the Licensee.
The Licence and the rights granted hereunder will terminate automatically upon any breach by the Licensee of the terms of the Licence.
Such a termination will not terminate the licences of any person who has received the Work from the Licensee under the Licence, provided such persons remain in full compliance with the Licence.
Without prejudice of Article 9 above, the Licence represents the complete agreement between the Parties as to the Work.
If any provision of the Licence is invalid or unenforceable under applicable law, this will not affect the validity or enforceability of the Licence as a whole. Such provision will be construed or reformed so as necessary to make it valid and enforceable.
The European Commission may publish other linguistic versions or new versions of this Licence or updated versions of the Appendix, so far this is required and reasonable, without reducing the scope of the rights granted by the Licence. New versions of the Licence will be published with a unique version number.
All linguistic versions of this Licence, approved by the European Commission, have identical value. Parties can take advantage of the linguistic version of their choice.
Without prejudice to specific agreement between parties,
Without prejudice to specific agreement between parties,
‘Compatible Licences’ according to Article 5 EUPL are:
EUPL-1.2, used as the second independent copy in the check.
spdx/license-list-data, text/EUPL-1.2.txt · read 2026-09-08LICENSES/EUPL-1.2.txt and
NOTICE in RnD/RESOLV, RnD/flowio and
RnD/elecIO; the licensor is named in each NOTICE.
LICENSES/EUPL-1.2.txt · sha256 5f6be11b…7efa1b92 · identical in all threeNOTICE of each
repository: "Rechthebbende: René de Ren / Waterschap Brabantse Delta (WBD R&D)."LICENSES/EUPL-1.2.txt as shipped in our repositories, the English against
the SPDX list text. Each matched to a single character.