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title: "Licenses"
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---
## Instructional Material

This material is derived from a framework created by the Software Carpentry
and Data Carpentry projects under the [Creative Commons Attribution
license][cc-by-human].

All Common Workflow Language project instructional material and changes
to the structure are also made available under the [Creative Commons Attribution
license][cc-by-human]. The following is a human-readable summary of
(and not a substitute for) the [full legal text of the CC BY 4.0
license][cc-by-legal].

You are free:

* to **Share**---copy and redistribute the material in any medium or format
* to **Adapt**---remix, transform, and build upon the material

for any purpose, even commercially.

The licensor cannot revoke these freedoms as long as you follow the
license terms.

Under the following terms:

* **Attribution**---You must give appropriate credit (mentioning that
  your work is derived from work that is Copyright © the Common Workflow
  Language project, and Copyright © Software Carpentry, and, where practical, linking to
  https://www.commonwl.org/ and https://software-carpentry.org/), provide a [link to the
  license][cc-by-human], and indicate if changes were made. You may do
  so in any reasonable manner, but not in any way that suggests the
  licensor endorses you or your use.

**No additional restrictions**---You may not apply legal terms or
technological measures that legally restrict others from doing
anything the license permits.  With the understanding that:

Notices:

* You do not have to comply with the license for elements of the
  material in the public domain or where your use is permitted by an
  applicable exception or limitation.
* No warranties are given. The license may not give you all of the
  permissions necessary for your intended use. For example, other
  rights such as publicity, privacy, or moral rights may limit how you
  use the material.

## Software

Except where otherwise noted, the example programs and other software
provided by Common Workflow Language project are made available under the
[OSI][osi]-approved
[Apache 2.0 license][apache-2.0-license].

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.

## Trademark

"Software Carpentry" and "Data Carpentry" and their respective logos
are registered trademarks of [Community Initiatives][CI].

[cc-by-human]: https://creativecommons.org/licenses/by/4.0/
[cc-by-legal]: https://creativecommons.org/licenses/by/4.0/legalcode
[apache-2.0-license]: https://opensource.org/licenses/Apache-2.0
[mit-license]: https://opensource.org/licenses/mit-license.html
[ci]: http://communityin.org/
[osi]: https://opensource.org