> i.e. there is a wide variance of what “passes” for XML not really, it's standardized. what differs is how it's used, i.e. a top of most serialization format

> i.e. there is a wide variance of what “passes” for XML not really, it's standardized. what differs is how it's used, i.e. a top of most serialization formats there is another implicit often overlooked serialization layer which roughly maps domain logic to the structures the serialization format supports. The problem with XML is similar to that of XMPP, to many features and variations, nobs to twist, things to easily subtle get wrong, etc. Also string content encoding is terrifying in XML as it overlaps string content and string formatted control structures and pretty printing in a messy way. (Like imagine pretty printing _inside_ of a json string without clear separation of weather or not a newline is content or formatting.)