I saved the Arduino Mega circuit ([https://easyeda\.com/hot/Arduino\_Mega\_2560\-z92kCUO6o](https://easyeda.com/hot/Arduino_Mega_2560-z92kCUO6o)) and started adding components for a custom project. RN3.1 and RN4.1 have numbers written next to the pins, but those are not Net labels. What are they and how does EasyEDA integrate them into the project?
Chrome
78.0.3904.97
Windows
10
EasyEDA
6.2.46