A couple of misc questions

 From:  blindfoldjump
8032.1 
Hey guys
I've been watching a video by Andrei Samardac called "MOI 3D, Advanced Technique"

https://www.youtube.com/watch?v=L47TEfu-ZE8

Learning a a lot from this one so far, but there are some things I can't seem to be able to duplicate even though I've tried a bunch of times.
If someone here could elaborate on what he's doing I would really appreciate it!

1. At around 18:40 where he makes the holes go away.
2. At 42:35 - seems like he has some sort of symmetry activated when he fillets those corners.

Lastly I'm curious of how he toggles wireframe on and off with a hotkey.


Cheers
Nick