What is '…' in HTML?

… is the HTML entity code for the ellipsis dots:

…

If you see it on a webpage outside the HTML source code, it usually means that the author or content management system has encoded the HTML entity incorrectly. You should only ever see … on the page except in literal HTML sourcecode.

I recommend using the unicode character HORIZONTAL ELLIPSIS (see the code block above) instead of the HTML entity …. Ensure that you have

<meta charset="utf-8" />

in your HTML <head> for compatibility.