This example demonstrates interactive SVG circles that respond to mouse events with tooltips. The visualization renders three orange circles of varying sizes on a whitesmoke background, each containing a distinct message. Using D3 v7 with the d3-selection-multi extension for chained attribute calls, the code binds data to circle elements and applies radius, position, and fill properties. The SVG canvas is 1000 by 800 pixels, with tooltip functionality triggered through the message property in the dataset.