Hi oldcolorprint as taz said no answer usually means no one viewing the boards then could answer you.
By answering you with a 'don't know' shows up as replied to and may be skipped over by support so it may delay a support response.
As far as thier tags are concerned it seems they are like little black boxes of code that we can use but not know the contents of. Quite a commonly used software concept, in which case you would probably be best off directly filing a support request.