This example uses the Vega-Lite API to render two scatter plots of the Wisconsin Breast Cancer dataset, with the main chart showing the relationship between Mitoses and Bland_Chromatin while a smaller overview chart displays Bare_Nuclei against Uniformity_of_Cell_Shape. The visualization uses `markCircle` with low opacity and size 300 to reveal density distributions, with points colored by class and tooltips showing the class label. The main chart resizes to fit the window while the navigator view occupies one-third of the width and one-fifth of the height, both using `vega-lite-api` with a dark styled config that removes axis domains and applies small gray guide labels.