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<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>Document</title> <meta name="description" content="A basic HTML5 editor with SEO features"> </head> <body> <h1>Welcome to the HTML5 Editor</h1> <p>This is a basic HTML5 editor with syntax highlighting and a modern dark theme.</p> </body> </html>