<Below this line, add a link to the EXACT exercise that you are asking about.>
<Below this line, describe in what way does your code behave incorrectly?
Include ALL error messages.>
i am stuck with lesson 1/11,I cannot understand when it say Using the menu
at the bottom of the terminal for reference, type Ctrl + O (the letter,
not the number) to save the file. (what is this?)
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