```html
<!DOCTYPE html>
     <html>
     <head>
          <title>Page Title</title>
     </head>
<body>

     <h1>This is a Heading</h1>
     <p>This is a paragraph.</p>

</body>
</html>
```

Skeleton of an HTML Document

You can write HTML code in a code node. For this purpose, you should enter your code in triple backthicks (\`\`\`). You should proceed the beginning backticks with the string "html". For example,
```html
<!DOCTYPE html>
<html>
	<head>
		<title>Page Title</title>
	</head>
	<body>
		<h1>This is a Heading</h1>
		<p>This is a paragraph.</p>
	</body>
</html>
```

University of Michigan - Ann Arbor

Examples of Code Nodes on 1Cademy

HTML Code Nodes on 1Cademy

You can write R code in a code node. For this purpose, you should enter your code in triple backthicks. You should proceed the beginning backticks with an "R". For example,
```R
n = c(2, 3, 5)
s = c("aa", "bb", "cc") 
b = c(TRUE, FALSE, TRUE)
df = data.frame(n, s, b) # df is a data frame
``` 

R Code Nodes on 1Cademy

You can write JavaScript code in a code node. For this purpose, you should enter your code in triple backthicks (\`\`\`). You should proceed the beginning backticks with the string "js". For example,
```js
document.getElementById("demo").innerHTML = "Hello JavaScript";
console.log(1234);
```

JavaScript Code Nodes on 1Cademy

You can write Python code in a code node. For this purpose, you should enter your code in triple backthicks (\`\`\`). You should proceed the beginning backticks with the string "Python". For example,
```Python
def fib(n):
    a, b = 0, 1
    while a < n:
        print(a, end=' ')
        a, b = b, a+b
    print()
fib(1000)
```

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