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### Template files
Instead of having a hard-to-read collection of ```echo``` statements outputting HTML, they now include HTML/PHP template files.

Instead of:
```php
echo "<h1>Hello World!</h1>";
```

You now include the file ```views/hello_world.php``` for example:
```php
<h1>Hello World!</h1>
```

This just makes the code a lot easier to work with and change in the future.