@Darpinian Some layout programs do not allow two nets, for example, digital ground and analog ground, to be joined. A 0R0 resistor between the nets works around this problem.
@rheingoldheavy Ground symbol points down. Vcc symbol (or 3V3, 5V0, -15V, BAT, etc.) points up. Text isn’t overlaid over lines (wires). Always. No exceptions.