Updating HTML Header in an Interspire Online Shop

While performing some Search Engine Optimisation on an Interspire (version 4.0.1) online shop, I needed to add keywords into the page title. You cannot change the title through the admin as this will affect the page link, so I had to do it at code level. In order to get to the page HEAD, from the root directory go into Templates -> <TEMPLATE NAME> -> Panels, then find the HTMLhead.html file. Simple enough, I know. But it took me long enough to find it.