An anchor uses starting and stopping tags. The stopping tag, at the end of the anchor, is </A>. The starting tag is more complex, of the form <A HREF="your-target-url"> where the double quotes enclose the URL of the target page.
Example: A browser renders the text
<A HREF="http://www.iec.org/">International Engineering Consortium</A>
as
International Engineering Consortium
This anchor is "active" in that clicking on it causes the referenced page to be displayed. Should we try it?