Do you mean the spoiler tags? If so, then it’s just [ spoiler ] [/spoiler ] without the spaces. Or if you want it with a title in it like
Then make the first tag [ spoiler=title] and cap it off with the good ole [ /spoiler]. Obvs no spaces, again. I hope that was what you were looking for? If not, then I have no idea and I’m just some grandma rambling nonsense in your thread.