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This example demonstrates animated transitions of colored circles and squares using D3 version 7.8.5. The circles, loaded from a CSV file with x, y, radius, and fill color attributes, grow into place with staggered delays while squares move across the background. Updates and exits use fast and slow transitions with easing, and mix-blend-mode multiply blends overlapping shapes. The visualization runs entirely within a measured container div, highlighting hot-reload capabilities through parameter editing.