The rocket sign shoots you in the air by default. But it can do more: You can set the player's velocity directly!

1. [Rocket]
2. Optional: Velocity (for example 100,0,0, default: 0,200,0)
3. whatever you want
4. Optional: the price

The velocity is just a comma-seperated vector: x,y,z. It will define how high you jump (y) and to which direction and how far (x and z).

This sign will shoot you high out in the air.