Filling Multiple Regions

Click-dragging the Strumento Riempimento while holding the Alt key down across several noncontiguous regions will cause all the regions to be filled. (Not holding the Alt down will cause the borders to also be filled.)

Paint Bucket - Touch Fill.
The Strumento Riempimento was click-dragged with the Alt key down across the object on the left as shown by the red line. This resulted in the figure on the right.