ROA: this is the first time I've ever heard of such a thing. I'm not surprised such a thing exists, but as a native speaker who has done a whole lot of writing

ROA: this is the first time I've ever heard of such a thing. I'm not surprised such a thing exists, but as a native speaker who has done a whole lot of writing I find it amusing I've made it for so long without ever encountering the attempts to formalize it.