You can see the cheatsheet in action or look at the developer documentation.
Interesting resource but needs wider coverage.
Do you recall a Windows executable that was an index of all the XML standards? I remember it quite distinctly but haven’t seen it in years now. Freeware product with updates.
I will look on old external drives and laptops to see if I have a copy.
It would be very useful to have a complete index to W3C work with scoping by version and default to the latest “official” release.