Is ator ERC20?

Excuse me, could you clarify something for me? I've come across the term "ERC20" quite a bit in the world of cryptocurrency, but I'm not entirely sure what it means. I noticed that you mentioned it in the context of "ator" earlier. So, is "ator" itself an ERC20 token, or am I misunderstanding something here? Could you perhaps provide a brief explanation of what ERC20 represents, and if it does apply to "ator", how so?