>you need a strict/warnings to warn about typos
Not really, at most you need something to make sure the tags are properly formed and correctly nested, a trivial task really, but then if your not capable of typing simple meta tags accurately you probably shouldn't be programming in the first place.
The system I have makes no such checks firstly because it would slow things down unnecessarily, and secondly because if a tag is malformed the parser simply ignores it and you get graceful degradation rather than compiler errors.
The upshot of that is that it's basically impossible to prevent successful compilation by typing bad aXML in, hence the strict/warnings issue is completely mute.
