A grid of thin horizontal and vertical bars appears to overlap, but masks create alternating shapes from the Unicode symbols embedded in the code. The visualization renders 100 rows and 100 columns, with each bar masked by one of eight symbols (like stars or hearts) repeated across the canvas. Built with React and D3.js (specifically `select`, `range`, `symbols`, and `symbol`), it uses SVG masks with inverted fills to produce the interplay. The source code relies on D3 v7.6.1, rendering to an SVG element that fills the browser window.