Comment 1 for bug 171429

For font designers, it would be helpfull, if caligraphic lines would
keep their mid-line as spline. This way you could easily create
letters with different types of pens (pencil, brush etc.) based on
the same freehand spline.

Maybe this is worth another wishlist bug.
To make it more clear, what is basically needed is the option to
draw letters just once, and then turn them into a caligraphic,
or just a thicker/thinner outline.

Corel does it the other way round. It keeps the mid-line of your spline
(what ever caligraphic/freehand tool you use) - until you turn it into
its outline. Afterwards, of course, its mid-line (path?) is lost.