There isn't one in 2013 (( not that I know of any way )). That is a new feature of 2014 :)
You can use the punch tools in 2013 but still not the same as the slot feature....
Someone mixed the video in youtube I assume ... ;) (Don't get me wrong it happens...)
Not DL'd IV 2014 been to busy playing around with Maya @ the moment but after seeing that new feature it will be getting DL'd tonight it is worth it's weight in GOLD that little feature....
Auto desk always striving to make our work flows faster and better...
(( WITH ALL THERE SOFTWARE ))
What would engineering and all CG Industries do without
Actually Farshad is right about solidworks... What would be the answer from an IV user ??? (Come on William...;P)
And its suprise that Catia have no option for skip on circular pattern
it's strange slot sketch is a old icon in solidworks but its a new feature in inventor