This dialog is similar to the dialog for segments. Of course in this case, the radius will be fixed.
One of the new options is the partial visibility. This will display only the relevant parts of the circle. I.e., it shows the parts, which go through points constructed on or by the circle.
Moreover, circles can be filled. In this case, one would usually want
to draw them in the background.
As for all filled icons, transparency can be turned
off.
Finally, circles can draw as circular arcs. To do this, press the button "Set Range" and select two
bounding points. If the icon is
not active, the arc will always been acute.
The chord option will display
arcs as chord segments.