Common abbreviations in Permaculture, Biodynamic, local/slow food movement, Regrarianism, Keyline...

Hello all. I'm working on a project to improve communication between permies, permaculturists, and normal, mainstream people. Please post any acronyms here that have stumped you. I'm looking for acronyms that aren't so much internet speak stuff (like OP original poster, etc.) as things like RMH, NIMBY, etc.

I am also aware of the previous thread that sought to clarify difficult to understand permies forums terms, feel free to exclude any abbreviations already listed there.

Thanks for your help!