Sure! It's under the system object when creating a new event. "Compare Value."
Then, when you're at a point you have two input fields, place your cursor in one and double click an object in the list below. This will give you the system-level information those objects contain. In many cases, these are different than the otherwise filtered lists you see at object level.
I think once you see what I mean, this will open up a whole new world for you.