Apply the ROT13 letter substitution cipher. Each letter is replaced by the letter 13 positions after it in the alphabet.
Type the text to encode/decode.
Each letter shifts by 13 positions.
Copy the encoded text.
ROT13 shifts each letter 13 places. Applying it twice returns the original text.
No, it's a trivial cipher used to hide spoilers, not for security.
No, only A-Z letters are shifted. Numbers and symbols are unchanged.