I think you've missed the point being made here. What's being said seems to be that regardless of how much scripting/API calls there are, if the base is HTML th

I think you've missed the point being made here. What's being said seems to be that regardless of how much scripting/API calls there are, if the base is HTML then it is HTML. To paint this another way, let's say you have UI toolkit "X" which defines elements using YAML but also provides a programmatic API in your favorite programming language to add, remove, modify, or otherwise modify elements. Now let's say there is another UI toolkit "Y" which defines elements using XML but, like toolkit X, it also provides a similar API. Regardless of how many YAML elements you explicitly create you've used X and not Y, in fact you've used YAML and not XML. It doesn't really matter if >50% of your code is using the API or not, just that you've used some amount of YAML. That's exactly the situation here: the existing debugger interface is using XUL and this new version is using HTML. Even if there wasn't a single line of HTML code, it would still be using the DOM to generate HTML and not XUL--and that's the distinction being made.