I'll be complete with this one:

To make a proper warp work, you need two things:
- a "warp" event
- a "warp target" event
The first is the actual warp, the target is where you're warped to. The warpID's determine which warp goes whereto. For instance, all "warps" with warpID = 7 lead to "warp target" with warpID =7. Easy no?
For racing there's another parameter: SetLap. Set it to 1 and laps will be counted when you enter that warp.

Should I translate that in Dutch?