operating systems exercise and need guidance to help me learn.

variables like x1, x2, x3, etc., we can use the tag for subscripts and the tag for superscripts. To display x1 as a subscript and x2 as a superscript, it will look like this: x1 and x2. When we save and reload the page, we can see that x1 is displayed as a subscript and x2 is displayed as a superscript.
THE PRESERVE TAG:
The
preserve
tag is used to preserve any white spaces within the document. For example, if we want to preserve blank spaces intentionally, we can use the

tag. So, it will look like this:
leaving blank spaces intentionally
. When we save and reload the page, we can see that the white spaces are now preserved.
So, those are the formatting elements in HTML: the bold tag using the tag, the italic tag using the tag, the underline tag using the tag, the strikethrough tag using the tag, the subscript and superscript tags using the and tags, and the preserve tag using the

 tag.
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Requirements: C++