Day 10. Effect modifiers.
Bulge, Ripple, Swirl, Shatter, Droop, Hatch, Mask, and Loft warp your design before G-code generation.
Bulge pushes lines outward from a centre. Ripple adds concentric waves. Swirl rotates paths around a point. Shatter breaks the design into shards. The rest handle droop, hatching, masking, and lofting between shapes.
These are not decorations I bolted on at the end. They run in the same pipeline as everything else, so you preview the result in the app before you plot.
Pick one effect on a design you already have and see what changes. That is the fastest way to learn them.