Phew, Lesson 7!
All the way through this course, I was having a heck of a time selecting a vector object. I just couldn't figure out how to do it. So I looked it up on the Corel site, tried a couple of keyboard shortcuts (notably Ctrl-Shift-B) and suddenly my PSP 2021 sort sprung to life and worked properly. Yay. Persistence pays off, I guess.