Default [Q] Q: How does the S-View cover work software-wise? Only with Touchwiz?

How does locking the phone work? If the case is closed i can see through the little window on the case and interact, is that a lockscreen app of some sort? If I open the case, will it simply open to where I was previously, or my home screen of choice (Nova launcher)?

I wanna be a bit more clear on the software side of the workings of the s-view case before purchase. I recently bought my note 3 and updated to 4.4 already.

Thank you.