Suppose you are given a folder with these 5 things in it:
folder: bin
folder: src
folder: lib
folder obj
ProjectName.as3proj
I am right now just creating a .fla called ProjectNameShell.fla that is basically an empty file. I just use it to publish through CS6 and also state which class to start from. Is the standard place to put this fla in this first folder or in src?