I'd like to be able to draw a black Bezier curve of arbitrary shape which has a white border to it (the centre of the curve being black). Is there an easy way to do this?
For instance, see the attached image. It's easy to do what I want for a straight line by just copying the original bezier curve, increasing the width and pasting on top of the original. But it doesn't quite work as well when there are curves; see the curve in the figure whose left border is thicker than the right.