Scope note - standard licenses for original 2026 demo contributions

The four modern demos now use the unmodified Apache License, Version 2.0
for original software, and Creative Commons Attribution 4.0 International
for separate original explanatory prose and authored illustrations.
These are separate scopes, not alternative licenses for software.

Per-demo software LICENSE, attribution NOTICE, content legal code and scope:

https://www.cin.ufpe.br/~pmmc/demos/point-location/LICENSE.txt
https://www.cin.ufpe.br/~pmmc/demos/point-location/NOTICE.txt
https://www.cin.ufpe.br/~pmmc/demos/point-location/CONTENT-LICENSE.txt
https://www.cin.ufpe.br/~pmmc/demos/point-location/LICENSES.txt

https://www.cin.ufpe.br/~pmmc/demos/tolerance-regions/LICENSE.txt
https://www.cin.ufpe.br/~pmmc/demos/tolerance-regions/NOTICE.txt
https://www.cin.ufpe.br/~pmmc/demos/tolerance-regions/CONTENT-LICENSE.txt
https://www.cin.ufpe.br/~pmmc/demos/tolerance-regions/LICENSES.txt

https://www.cin.ufpe.br/~pmmc/demos/far-field-reflector/LICENSE.txt
https://www.cin.ufpe.br/~pmmc/demos/far-field-reflector/NOTICE.txt
https://www.cin.ufpe.br/~pmmc/demos/far-field-reflector/CONTENT-LICENSE.txt
https://www.cin.ufpe.br/~pmmc/demos/far-field-reflector/LICENSES.txt

https://www.cin.ufpe.br/~pmmc/demos/nonnested-matchings/LICENSE
https://www.cin.ufpe.br/~pmmc/demos/nonnested-matchings/NOTICE
https://www.cin.ufpe.br/~pmmc/demos/nonnested-matchings/licenses/CC-BY-4.0.txt
https://www.cin.ufpe.br/~pmmc/demos/nonnested-matchings/README.md

Official standard texts:
https://www.apache.org/licenses/LICENSE-2.0
https://creativecommons.org/licenses/by/4.0/legalcode.en

This file identifies scope and adds no license conditions. No extra visible
footer, commercial-use or adaptation restriction is imposed. It is no longer
the principal reproduction permission. Permissions previously granted remain
valid; this update does not revoke them or restrict uses permitted by law.

Third-party/joint material, scientific papers and copied paper figures,
datasets/derived databases, fonts, institutional marks and vendor components
retain their respective licenses and notices. Mathematical facts, numerical
point data and unprotectable geometric outputs acquire no new restrictions.

The historical Point Location implementation remains excluded: delaunay.js
and pointlocation.js retain MIT and their Castro/Devillers 2010/INRIA notices;
pointsetgen.js retains its prior GPL declaration (version unspecified).
The canonical-link condition from the earlier scope note is not imposed on
reuse under these standard licenses or the pre-existing historical grants.