Welcome to EnviroDIY, a community for do-it-yourself environmental science and monitoring. EnviroDIY is part of 
pio lib uninstall xxx would mean “uninstall the library named xxx”. You’d replace the “xxx” with the name of whatever library you’re trying to uninstall. All of the documentation and examples use “xxx” meaning “replace this part with your own text”.
I put up screen shots with the locations of buttons to open a new terminal.
