This function has a double purpose: You can use it to close paths
as well as to round them off. Closed paths are those having their
start and end points at exactly the same position. Curves that contain
Bézier curves can also be rounded off. This means that the control
points of the curves are moved automatically in such a way that they
join up smoothly without forming creases
at the common
endpoints.
Just how rounding off a path works can be seen from the next illustration:
The use of the function is simple: Click on the icon and then on any of the points in the relevant path. The complete path to which this point belongs will then be closed and rounded off. The icon will remain selected so that you can also close and round-off other paths. A right-click returns you to the Select/Move path point mode as usual.
