02·build and wheel — creating a package

What does the py3-none-any part mean in the wheel filename mypkg-1.0.0-py3-none-any.whl?

• PEP 425 tags: Python implementation (py3 = any Python 3), ABI (none = no specifics), platform (any = universal). A pure-Python wheel works everywhere.
• py3 = Python 3.0, none = no dependencies, any = any license.
• PyPI-internal tag, ignored by pip.
• Three random IDs generated by the build backend.