What is this in Page Source

[Joe Lewis Wilkins]

Hi  All,

I was on a website and wanted to take a look at the Page Source for  
that site and all I got was this:

<!-- GOLIATH17MX -->

Nothing else. I'm very new to this sort of thing. Normally there is a  
lot of HTML when you do View>Page Source for any web page.
TIA,
Joe Wilkins