Final answer:
Boilerplate code is the code that needs to be on every .html file. It includes the basic structure and necessary tags of an HTML document.
Step-by-step explanation:
The code that needs to be on every .html file is called boilerplate code. It consists of the basic structure and necessary tags that should be included in an HTML document. The most common boilerplate code includes the DOCTYPE declaration, head, and body sections.
Here is an example of a simple boilerplate code:
<!DOCTYPE html>
<html>
<head>
<title>Page Title</title>
</head>
<body>
<h1>This is a Heading</h1>
<p>This is a paragraph.</p>
</body>
</html>