Group of events and comments are essential for organizing the code and orientat yourself through it.
But, working on games with MANY event lines I felt often the needing for an "event bookmark" feature.
Often happens that I have to check something that involves events i.e. on the end and on the middle of the code. And scrolling up and down through a complex code while trying to fix a bug often gives you even more headacke.
Jumping from a point of the code to another with bookmarks would result TREMENDOUSLY comfortable, imho.