Okay? Don't use them :)
Question: how big are your event sheets?
You know you can have multiple event sheets and can include them into a primary.
You can also place those sheets into subfolders, and those subfolders into subfolders.
I find it best as the complexity of the game grows to group smaller sections of events into folders that hold a sheet to perform a particular task. This allows me to plug that particular task into any part of the game. Basically, Object-oriented programming if you will.
When you try to fix bugs, it is easier to navigate a smaller area of code that scroll down thousands and thousands and thousands of lines of code.