Original post by loufoqueQuote:
You can define the tags yourself, but it can't check particular "nesting patterns".
With such a syntax, it could perfectly do so at compile-time.
Well what I mean is it'll check stuff like:
<html>_ <body>_<!html>_ <!body>_; // compiler error
But there's no way to tell it things like "a <body> block must appear inside an <html> block".