What is the best way to radius a corner where two lines meet?

[shiphen]

Appreciated.

> Xara Designer Pro is an illustration, photo editing, web designing application not a CAD or Engineering App.
Mind you with the new "Snap to shapes" tool, it's powers are starting to getting closer to the latter.

P.S. It's deeply frustrating - the point about illustration is that one has no idea what radius one will need until you see it.

Interestingly the "Freehand and Brush" tool has a thing called "freehand smoothing" (%age) that does something very similar to what I am talking about, but smoothing out any rapid changes of direction...