What does the Jump() function?

I want to find a way, how can a make my character to jump. My AnimGraph is ready, I just have to set the input. What should I do? I don’t understand what is the Jump() function. It’s easier to write in blueprint? Thanks!

He can find a good answer in this Question:

But since we haven’t heard back from him in a while, i will mark this question as resolved. Feel free to reopen it if you need some more explanation.

I have a character which has a “pre-jump” phase in the jump begin animation, is there some way I can modify this function so that it does not instantly move my character into the air but waits for a short time between animation start and apply the jump velocity?