Limited experience here, but I'm using "Page 2 Stage" to write a sitcom. When I look at other scripts online, I notice the setups are not exactly the same. Which has me wondering how much the differences matter? Is one preferred for movies and another for television shows? Or does Hollywood work with something different than the UK? Or as long as there is consistency is it ok? I have a few great movie ideas as well, so should I cough up some money and invest in writing software like Dramatica Pro, Writer's Block, etc?