Good morning, I am hoping someone can help me.   I have been putting off signaling the layout for sometime as I find it difficult to get my head around. Its simple to understand the concept, however, putting it into practice and applying it to my non-prototypical layout is a little daunting.   I have added ground and semaphore signals to my plan where I think they should go. Double ground discs I assume would be stacked, but it looks an awful lot! Would semaphore be more