cite attribute used to specify a URL that points to the source document or message or why the text was inserted/changed.
You can use cite attribute with
It points out that the quote is from another source.
<blockquote cite="https://en.wikipedia.org/wiki/HTML"> HTML elements are the building blocks of HTML pages. With HTML constructs, images and other objects such as interactive forms may be embedded into the rendered page. HTML provides a means to create structured documents by denoting structural semantics for text such as headings, paragraphs, lists, links, quotes and other items. </blockquote>
It points out why the text was deleted.
<p> <del cite="del_cite.html">This text has been deleted</del> </p>
It points out out why the text was inserted.
<p>This is a text. <ins cite="why_inserted.html">This is an inserted text.</ins> </p>
It points out the source URL of a quote.
<p>WWF's goal is to: <q cite="http://www.wwf.org"> Build a future where people live in harmony with nature. </q> We hope they succeed. </p>