One of the advantages to using vector graphics is that the lines can be tweaked and edited endlessly until they are perfect. Unlike working with Raster layers, where a line must be erased and redrawn until it's just right, vector lines can be manipulated and reshaped using their control points.
Clip Studio Paint has tools that allow for the easy cleanup and editing of vector lines. These tools can be found in the Correct Line category of tools, as shown in the following screenshot:
Let's take a closer look at some of these Correct line tools and what they do.