In the following screeshot of the Boron schematic in the microcontroller circuit, I don't know if the cap symbol in the green box is a cap or an inductor (the symbol is a cap but the size is 3.9nH). Is it supposed to be nano Farads? In the red box the symbol is a cap but it says "or jumper." Is it supposed to be a cap or a jumper?
Also, what is the resistor value of resistor R20 below in the u-blox circuit?
Thank you!