What are the lines?

Thanks!! but weren't there 9 line tools or something like that?

Well, here is a list:

Blue Lines- For normal drawing. Line Rider will be pulled on these due to gravity.
Acceleration Lines- For accelerating Bosh.
Backwards Acceleration Lines- Since there is no "Shift" button on a phone, there is a separate set of lines to use to make Bosh accelerate backwards.
Front Scenery- These scenery lines will appear to be closer to you than Bosh is, giving the game a 3-d perspective. They scroll faster than the track.
Scenery- Just like normal Line Rider scenery, scrolls with the track lines. No 3-d perspective.
Back Scenery- These scenery lines will appear to be farther away than Bosh is, giving the game a 3-d perspective. They scroll slower than the track.
Destructible Lines- These lines will shatter apart when Bosh hits them. They can not be drawn on the 3-d perspective and give a nice little effect to the game!
Finish lines- Lines which Line Rider will stop on to complete his course.
Deceleration lines- Lines that slow down Line Rider to a complete stop, but do not reverse him.

That is it really. The game comes with 30 challenges (that I've all completed) and is well worth the $2!

Hmm, it is still visible to me, but it moved to below the new post. Must be an issue with the forum, sincerest apologies.