Notice that that is between a pair of triple quotes (and github even syntax highlights it in a different color).<p>It&#x27;s all string, more specifically a docstring (see <a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Docstring" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Docstring</a> ). They are also used in other languages, including Python.