by Jim » Fri Dec 09, 2011 7:43 am
Designer forgot to put it in would be my guess.
If you have lots of small includes, putting in a comment at the top and bottom of each include can add a lot to the size of the html page that the browser has to download. Although 2 lines doesn't make much difference, if you have 10 includes for a product and 20 products on a page that would be 400 lines of code that need to be downloaded but that aren't really necessary.
Also you can add comments in the template that are stripped out of the generated html by inserting a # character as the first charaxter on a line.
In recent versions there is also an option, I think on the Utilities >Publish page to automatically add the template name as a comment when publishing.