Your most obscure language

Question

What is the most obscure/ancient code language you ever used, and what for? Can you share your experience or opinion on those?

Answer 1

I'm not very experienced, infact these are noob languages. The most obscure that I can remember the name is AutoIt, which is used to automate keyboard and mouse commands. Another is GML, which is game makers language. The Roblox version of Lua... and whatever the script language for rainmeter is.

I know Python now, but that's not obscure.