Converts a stroked path to a filled path.
The stroke properties become the fill properties of the newly created object.
Placing the objects with stroke or fill in a knockout group This method puts everything in a form. This may be undesirable; if so, you can select the second option.
Clipping the object with fill by the object with stroke This method works in a different way, without knockout groups, it simply cuts away the stroked object. Note that exceptionally small hairlines may be visible (depending on the renderer used).