Is a ramp that is abruptly stopped by stairs or a small gap a Euro Gap or a Step Up?
In the UK it's called a Wembley Gap (after premiering at that 1997 Wembley Arena contest where Gonz and Duffy collided mid-air).
In the rest of Europe, it's called a London Gap.
Anywhere else in the world, including the US, it's a Euro Gap.