 So you don't understand point action curves, not a problem. Make Curve allows you to left click points in order to draw curves. Every time you press a spacebar, you will reset the beginning of the curve and be able to start drawing new ones. Now once you have a curve, you can do all the normal curve things like apply a chain or a tube or a tail or all the usual. But you can also right click on the curve, you can decide what happens. If you left click the curve, you can choose from doing nothing, delete the curve or make a bevel. The rows modifier determines how many segments emerge from the bevel. It defaults to single, but you can also choose between two, four and eight segments. This area here determines the pattern of segmentation. Linear means the segment is divided equally. Sharp pushes most of the segments towards the edges and soft pushes most of the segments to the middle. And if you want a custom distance, you can decide that here. Hope that helps and as always, I hope you have a fantastic day and I'll see you around.