[Mikhail_Edoshin]

But the part of XML that is equivalent to JSON is basically five special symbols: angle brackets, quotes and ampersand. Syntax-wise this is less than JSON (and it even has two kinds of quotes). All the rest are extras: grammar, inclusion of external files (with name and position based addressing), things like element IDs and references, or a way to formally indicate that contents of an element are written in some other notation (e. g. "markdown").