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Question about the exposed pins on I2C RGB Backlight LCD 16x2 Display Module for Arduino

I'm reading the tutorial here: https://wiki.dfrobot.com/_SKU_DFR0374__SKU_DFR0936_LCD_Keypad_Shield_V2.0
I have question about the exposed pins on this shield.
For example, in the Board Overview section, what does “D6 + -” mean.
I assume D6 is for pin D6 on the arduino. What is the “+” and “-” pins. My guess is that is power / ground?
2023-09-08 20:31:33
rvt
I tested this out and the “+” and “-” do appear to represent power and ground respectively.
