What does the "when i snap a window..." option do?

This is a good question. Admittedly, I didn't read carefully enough when I answered it, but in subsequent conversation we were able to nail down exactly what OP needed to know and I found a way to illustrate the real solution, after which point the question was deleted by OP without further comment.

I think that with a corrected answer this would be a helpful question to exist on SU and so am inclined to re-open it, but would appreciate some second opinions as to whether that is the best thing to do.

An alternative would be to simply post the original question as a new question of my own and then answer it, but I don't want to steal points from the OP (even if they don't seem to want it) or come across as being less than community-minded.

What does the "when i snap a window..." option do?

This is a good question. Admittedly, I didn't read carefully enough when I answered it, but in subsequent conversation we were able to nail down exactly what OP needed to know and I found a way to illustrate the real solution, after which point the question was deleted by OP without further comment.

I think that with a corrected answer this would be a helpful question to exist on SU and so am inclined to re-open it, but would appreciate some second opinions as to whether that is the best thing to do.

An alternative would be to simply post the original question as a new question of my own and then answer it, but I don't want to steal points from the OP (even if they don't seem to want it) or come across as being less than community-minded.