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About this Add-on
This extension looks for sections with certain key words, hides them, and provides buttons for you to click to toggle showing them.
Never get spoiled by articles on Wikipedia again!™ (Satisfaction not guaranteed)
I've tested this on hundreds of pages for movies, books and video games, and it's worked wonders. Don't blame me if it suddenly fails to block a particular article, though.
Let me know via e-mail or comments if you've found a section header that didn't have its spoilers hidden!