Okay, we all know how some REALLY stupid, little things sometimes drive me senselessly nuts. And, the acronym TIOP is one of them lol. For Acronyms, articles and prepositions like 'of' typically aren't used in them unless it makes the acronym better, or more memorable. So, not only would TIP sound and look better, but it would be more correct. I know...I'm f'n OCD, and obviously it need not be changed, but I just had to finally get that out since it's been driving me senselessly nuts! hahahahahaha