Phillip Hallam-Baker wrote:
But the markup does not have to be tree structured, that is an XML2RFC peculiarity.
FYI, Nested Elements https://www.oreilly.com/library/view/web-design-in/0596009879/ch08s02s03.html <ul> <li>Example 1</li> <li>Example 2</li> </ul>> <h1> is just a paragraph tag, so are <p> and <pre>. The notion of hierarchy
> comes from the interpretation of the tags. So, proper quoting with html is even more unsolvable. Masataka Ohta
