Show/edit isoparms or surface control points

 From:  Fake Pilot (FAKEPILOT)
6254.1 
Hello,

I was wondering. How do you show and edit a surfaces isoparms or control points?
A function that I thought didn't exist, until I found this video by Andrei: http://www.youtube.com/watch?v=9IR1LIpyVGA&list=UUNPkL8Sj4dm-Vr5yT8Jym8Q

Would love to know how to edit surfaces like that... A script? A hotkey?