If I have a list of symbols that I always want included in my universe, how can I append them to the end of the fine universe selection to ensure that they're included in my universe? I've tried appending the symbols themselves to the list that I return to the fine universe selection function but receive an error since it looks like the fine selection filter has it's own identifier for stocks and doesn't recognize a normal stock symbol. For exmple, the identifier for TLT is 'TLT: some type of box 135.4'. Is there a place where I can find the universe identifiers to append to my universe? Or is there a better way of going about this? Thanks!