HTML is a markup language primarily used for web development,
letting you create items that you can then style with CSS.

An example of a basic page in HTML:
```html
<!DOCTYPE html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<meta name="viewport" content="width=device-width, initial-scale=1.0">
	<title>Hello World</title>
</head>
<body>
	<h1>Hello, world!</h1>
</body>
</html>
```
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