Summary
Having worked through this chapter, you now master overlapping situations and control the order of drawing commands in your source code versus the order of appearance in the output image.
Now, you can draw see-through content using transparent colors and draw on the background of pictures behind other objects without overprinting them.
You learned to utilize the tikzmark
library, which is a very clever and helpful tool for tweaking your LaTeX articles, books, or presentation slides with TikZ drawing tools.
You can now draw on absolute positions on a page behind the regular LaTeX document text. In the next chapter, you will learn to calculate with coordinates, which helps a lot in positioning.