This example displays the text "Hello HTML" centered on a white page with extremely large, 13em font sizing. It demonstrates a minimal web page structure using standard HTML, CSS, and JavaScript. The page includes a `<style>` block that centers the content and sets the font size, while a `<script>` tag logs "Hello JavaScript!" to the browser console. This serves as a bare-bones starter template showing how these three core web technologies combine in a single document.