Here are some useful tips when creating a terrain.
1. Resizing the terrain
Depending on the World you want to make, you can freely enlarge or reduce the size of the terrain. If you have finished adjusting the size, click [Finish scaling] at the bottom.
2. Draw terrain in a straight line
If you want to draw a topographic brush such as asphalt or water in a straight line, you can use the [Brush Alignment] function. Check the [Brush Alignment] function to draw the terrain in a straight line.