Question on being sure signals are connected as expected..
The inner 2 layers of a new 4 layer board are power.
One is the common return. The layer name (SYS_GND) is the same as the
routed trace signals names, so no connection concerns there.
The other will provide individual supply voltages (5V and 3.3V). At
this point, that layer is named Fused_5V, and the traces to connect
either "Fused_5V" or "+3.3V_SYS". How can I be sure the +3.3V_SYS vias
will correctly connect to the dual supply layer??
In a similar manner, there are several isolated supply and return areas
physically located in those layers, connecting to top and bottom traces
Question is asked since a mistake was unknowingly made on another 4
layer board, where there were different names between layer and signal,
resulting in all "5V_supply" vias not connected to the supply plane.