I'm designing a 18F8722 Controller board, and with that many pins means I need lots of LEDs on it (obviously). I want to put a LED on the MCLR pin so it indicates when the board is being programmed or there is activity on the MCLR pin. Currently I have just the 10K Pullup and a switch that when pressed connects MCLR to ground. However, how do I add an LED to the circuit? Would I sink or Source the LED via the MCLR pin?