Jetson Tk1 schematic's parts

Hello all,
I am designing designing a custom board using Tegra Tk1 and I am taking Jetson TK1 as a reference for me. In the schematics, there are some some components that are empty and their part numbers are also not in the BOM. Also there are some symbols that are unknown to me. Can someone help in identifying those and purpose of those symbols.
I am unable to paste screen shot of that symbol.
Please refer to “page 29- +5V VR” of reference schematics and the symbol is (ISO5C1 4 mil).


Hi, that is not a real component, just a node of the line for some specific routing convenience, you can ignore it.