What is a token and how do I generate it, thank you

Hello, everyone. I read the node startup document, and then I don’t quite understand what the token mentioned here refers to. If I want to run multiple nodes, how do I have a token and how to generate multiple keys from the token.
Thank you!

If you’re running multiple nodes, you only need one token - it can be used to generate multiple keys.
Please use the following pattern when generating your token mainnet-10-yourname (you can pick any name, it just helps us keep track of the most recent keys you’ve sent and would like us to include in the bootstrapping process)