Yellow tick on point sub-branch and cannot generate line sub-branch
I imported the point txt file when I setup the point sub-branch and clicked on the point pairs to generate a bike frame (ideally as shown below). However, it did not work. Is anyone know where the problem came from and whether it is related to the yellow tick in point 1? What does the yellow tick mean? Is there anywhere that I can see exactly where the error is in the design modeller?