Why we have to use notepad for html documents?

Why we have to use notepad for html documents? Is it mandatory? or we can use some other for html documents.. If yes, what we can use for that.

Then when we can take assigment, whether we have to use the things which you mentioned or we can use whatever commands we know in that topic..

oh.. Thank you for your reply..

Hi, It is not mandatory to use Note pad for html documents. We are using the notepad because it is a free version and easy to work with. And Most professional web developers are uses The HTML editors like Frontpage, Dreamweaver also. In that there is a combination of all languages as HTML,CSS,Javascript, PHP and many more and You can take assignment only when you are strong on the concepts otherwise the teachers will put a remarks which are effecting on yourself only .This is online course so every company will look up your performance