Question for you devs. (for Inferno Profile Setup and etc)

[fifidong]

1. Does a trap object (flame-thrower trap in Core of Arreat) have an orientation (which way they are facing)
2. Is it possible to "set obstruction objects" within the profiles?
3. Can the Category ruleType be separated per difficulty?
<Category ruleType="Keep" difficulty="Inferno">

4. Will there be some documentation for Zeta class?