Check out example codes for "copyright symbol in html". It will help you in understanding the concepts better.

Code Example 1

©

Code Example 2

<!-- Answer to: "html special characters" -->

!
&excl;
[
&lsqb; &lbrack;
_
&lowbar;
`
&grave; &DiacriticalGrave;
|
&verbar; &vert; &VerticalLine;
}
&rcub; &rbrace;
¢
&cent;
<!-- There's many more at https://dev.w3.org/html5/html-author/charref -->

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