'https://bmschmidt.github.io/vietnam_war/',
    max_points: 1000,
    alpha: 10.12, // Target saturation for the full page.
    zoom_balance: 0.12, // Rate at which points increase size. https://observablehq.com/@bmschmidt/zoom-strategies-for-huge-scatterplots-with-three-js
    point_size: 2, // Default point size before application of size scaling
    background_color: '#112233',
    click_function:
      "select('#ident').html(JSON.stringify(datum, undefined, 2))",
    zoom: {
      bbox: {
        x: [99