Good day All --
I am very new to Power Automate and have been trying to learn as much as I can by watching videos online. I noticed in one video by Reza Dorrani he switches his editor from Key Value mode to Text mode using the icon highlighted in yellow (in the image below.)

I can see there is a difference in what data needs to be entered, but I can't seem to figure out why I would choose one over the other. I Googled around, but couldn't find any sites with descriptions.
Thanks for your help.
Kind Regards,
Seth