What are these blueprint nodes?

I’m new to blueprinting and I’m following a guide on volumetric fog! The nodes I have pictured are from the guide with title names. I’m actually trying to find out what the actual blueprint node names are so I can keep following the guide! Thank you!
Screenshot 2020-10-27 122500.png

Hi, those are no blueprint nodes, those are function inputs inside a material function. You can name them however you want and AFAIK there is no connection between them and blueprints. What are you trying to do?

I was following Asher Zhu’s Volumetric Fog walk-through from the Unreal Engine stream!