Hi Ralf,

re:
> Let's say i have a 10 sided polygon and i like to get a curve through all the points.

You can also use the existing Rebuild command for this task, there's an "Endpoints" mode that will build the new curve by interpolating through the endpoints of segments. There's also a "Break angle" parameter where it will keep sharp corners at lines greater than the specified angle, if you want no sharp corners preserved at all put in a high angle like 180 for that value.

- Michael