The Control Point Duplicate icon shows a rounded plus inside a circle, paired with a partial circle behind it. Drawn in the line style on a 24px grid, its open spacing keeps the symbol clear at small sizes. Use it for duplicating control points, adding map markers, repeated nodes, and editing vector paths. It belongs to Rounded Line - Streamline Material Free free set in the Streamline Material family.
Same category - from the Rounded Line - Streamline Material Free