Main Delegate Is Called By Monobehavior?

I used void Main() as a method, and was having a bug. It was running on its own. Renaming it stopped this. I was wondering if anyone could produce some documentation supporting where unity explains the purpose of this function. I was under the impression main was not a protected word in unity even though we use C#. Also, even if it were, it is Title Case unlike the core method in c#, so it shouldn't be initializing as far as I have knowledge.

FYI its acting like the start method, if anyone is curious.

Thanks for any input.