Change to Polyline and Change to Bezier Curve
Change to Polyline
Change to Bezier Curve
To Curve button (Standard toolbar)
This command is activated when one or more objects are selected.
Choose this command to convert objects drawn in freehand mode to curves. All selected line and area objects are converted. If a hole inside an area object is selected, only the border of the hole is converted.
The setting of the Smoothing buttons is used for the conversion.