I've see that you can do (e) -> {...} or (event) -> {...} as an input,
But I've also heard you can use any variable for event information like "a", "b", or anything like that. ex. (a) -> {...}
I was under the assumption "e" and "event" were unique, but it sounds like that's not the case from what I've read.
So my question is if I do (a) -> {...} how does the function know "a" contains information about the event? (And why would "a" have information about the event anyway, without being defined or something?)
Thanks, Will