Well that's perfect ! Thanks, I had a peek at the ini looking for it a little while ago ... but I probably only searched for "circle" and "radius".

Such a relief !

I still don't think it's the ideal solution. It would be nice if circles were defined by their diameter and arcs by their radius, by default. Changing this (only) setting in the ini file means that one or the other will be wrong.

Martin.

Hi there BL,
Interesting. Which arc tool in particular do you mean ? ArcCenter seems to behave just fine here, accepting the distance from the center to the arc (=radius) as the input.

Sorry, I'm getting confused. I must have been thinking of the Dim Radius tool being able to differentiate between arcs & circles (radius or diameter).

Martin.