I find this term interesting. Meta applies a kind of self-awareness and the theoretical tends toward an area of study rather than practical application, and so I'm wondering what we do with the 'meta-theoretical'? Self-aware theory? areas of study that have a level of self-awareness (and/or self-awareness as their own theoretical underpinnings)?

What is writing?

SA is also known as Collaborative Annotation in writing studies, as it focuses on peer-to-peer annotation of a shared document.