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Original Zenzo educational writing, exercises and diagrams published on this website are licensed under Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0), except where a specific item is marked otherwise. This permission covers those educational materials; the exclusions below apply to other parts of the website.
Reusing educational material
You may copy, share, translate and adapt covered material, including for commercial purposes. Give appropriate credit, link to the source and licence, and identify changes. Distributed adaptations must use CC BY-SA 4.0 or a licence Creative Commons recognises as compatible. Do not impose additional restrictions that prevent others exercising the licensed freedoms. Reuse must not imply Zenzo's endorsement.
Suggested attribution:
Adapted from “[material title]” by Zenzo, [source URL], licensed under CC BY-SA 4.0: https://creativecommons.org/licenses/by-sa/4.0/. Changes: [brief description].
Retain any supplied author credits, copyright notices and relevant notices. For unchanged copies, use “From” instead of “Adapted from” and omit the changes description.
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Licence details and questions
Read the CC BY-SA 4.0 summary and full legal terms. Those terms govern licensed reuse. Existing permissions granted under this licence cannot be revoked for users who comply with its terms.
For questions about an item's attribution or reuse status, contact zenzoparadigm@pm.me.
Effective 6 September 2026. See the Sources page, editorial record and Charter.