This example demonstrates a simple interactive arithmetic calculator built with Svelte. Two numeric input fields are bound to variables `a` and `b` using Svelte’s `bind:value` directive, and the sum is displayed in a paragraph. The UI is styled via a global CSS rule in the HTML file. The visualization shows how Svelte’s declarative syntax integrates into a page, though the README notes that style output is not yet fully instantiated in this early VizHub integration. The code relies on the Svelte component model and basic HTML input elements.