WC - Command Line

Im going through the project “Lingua Franca” since I’ve finished the course “Learn the Command Line” recently.
However, I couldn’t figure out the answer to one of the questions and, when I decided to check out the “walk through” video, the girl explaining it used the command -wc -l … which has not been explained during the course. I went through my notes, looked at the course’s page again, looked into the cheatsheet and nothing. The explanations I found on Google don’t seem to be directed for beginners.

Could anyone here shed some light on it and maybe attach a link so I can understand it, please??
Any help will be much appreciated!!

thanks

On the command line we add ‘switches’ to our commands to abstract the results accordingly. Search the term along with ‘command’. Should turn up some results.

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