How to create curved paths/roads on (park) tiles?

[Walter Raleigh]

I see a lot of the paths or roads on user-made park tiles are curved. In the Asset Editor, I can only build them conforming to the grid, so with right angles.

So how does one create curved paths/roads on tiles in the Asset Editor?

 

[Walter Raleigh]

Never mind. I was looking in the wrong tab.