The person who associated a work with this deed has dedicated the work to the public domain by waiving all of their rights to the work worldwide under copyright law, including all related and neighboring rights, to the extent allowed by law. You can copy, modify, distribute and perform the work, even for commercial purposes, all without asking permission.
http://creativecommons.org/publicdomain/zero/1.0/deed.enCC0Creative Commons Zero, Public Domain Dedicationfalsefalse
Oxford spelling is an acceptable variation within UK spelling so does not need its own category - it can be included as a variation under UK spelling as with other variations
Replaced poor example (aluminum/aluminium) which is actually a different pronunciation/word with one more illustrative of global systematic differences (aging/ageing)