Backward compatibility with fragment identifiers

In older websites, you may see a slightly different system for accessing content within a
web page, and this largely involves obsolete browsers such as Netscape 4 not understanding
how to deal with links that solely use the id attribute. Instead, you’ll see a fragment
identifier, which is an anchor tag with a name attribute, but no href attribute. For instance,
a fragment identifier for the first answer is as follows:
<p><a id="answer1" name="answer1">Answer 1!</a></p>

The reason for the doubling up, here—using both the name and id attributes, is because
the former is on borrowed time in web specifications, and it should therefore only be used
for backward compatibility.