This example shows a 10-by-10 grid of circles that form an icon chart, with the first five circles in the top row highlighted in a lighter blue to mark a distinct subset. The visualization is built entirely with SVG and JavaScript, creating each circle dynamically using `document.createElementNS` and setting `cx`, `cy`, `r`, and `fill` attributes directly. The data is hard-coded in nested loops, and the SVG is appended to the page body, demonstrating a minimal, manual approach to icon-based charting without external libraries.