Where is the data for the layers kept?

I want to do a certain bug. It says you have to create shortcuts(up arrow, down arrow) to switch between them. I have everything set up, except the cycle function because I don’t know how where the data is kept.
I’d appreciate any help.
Thanks in advance! :slight_smile:
Edit: Nevermind, I need to know how to switch the layers in the drawing box

@Nite_Coder hmm I’m not really sure if you’re asking about how to develop that part in the application base code.

I’m not really sure where the layer manager code would be stored in order for you to “switch” the layers in the timeline. Maybe @chchwy, @scribblemaniac or @MrStevns know more about it.