You should write comments to explain what your code does. They help make your code easier
to read and understand. This can help you and others who read your code or remember what
was the purpose of that code.
To write a comment that stretches over more than one line, you use a multi-line comment,
starting with the /* characters and ending with the * / characters. Anything between these
Multi-line comments are often used for descriptions of how the script works, or to prevent a
section of the script from running when testing it.
In a single-line comment, anything that follows the two forward slash characters
for short descriptions of what the code is doing.
Good use of comments will help you if you come back to your code after several days or
months. They also help those who are new to your code.