This example shows a minimal HTML page that displays the text “Hello HTML!” in large, centered type, demonstrating how to combine CSS for styling with JavaScript for scripting. The page loads two external JavaScript files, `test.js` and `test_with_underscores.js`, each of which logs its filename to the console, illustrating script execution order and file naming conventions. The code relies on standard browser APIs—the Document Object Model (DOM) for the message element and the console for output—with no external libraries. The rendering approach is static, using plain HTML and CSS, and the data source is the literal text embedded in the markup.