Meaning of NC behind resistor values in ESP32 core board schematic

[jssrdrg]

Hi, I'm planning on building a custom esp32-WROOM board for a school project.
So I looked up the schematic to see which parts I need and I came across some resistor with (NC) after their values. (Schematic is included.)
I.E.

Code: Select all

5K(1%)(NC)

Resistor between IO2 and GND

Could someone tell me the meaning of the NC behind the value.

Thnx in advance!

[WiFive]

Not connected meaning by default there is no resistor placed but a resistor can optionally be added later for certain configurations