This feature is easy to miss because the appearance of the handles doesn’t change when they are selected — the only thing that changes are the X and Y “position” values in the Inspector. Being able to set a handle’s coordinates solved these conundrums and gave me the peace of mind that my Bézier handles were exactly where I wanted them. Furthermore, miniscule adjustments (measuring fractions of a pixel) became easy to make. Try this out for yourself; modify a Bézier curve by dragging the handles, then fine-tune the handle positions in the Inspector.