I was trying to nest code blocks in nested lists, but couldn’t get it right, so I went to read the help, But I didn’t get the answer, instead, I was surprisingly greeted with a markup that I didn’t even know it exists.

https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjP3yN-PNqdreIGKEL2EDziMly1zFa8JiX9A_IMQkE-0pKO0BKk77pGCq5XylpeifZv95NwYxHrQckqB83tjB4NS2LN-NHGhaqZbGVVVdkbQtpGLcZ2WfZ6l1Rb2CBQWUhAIJw73XR1W9w/s640/StackOverflowSpoilers.gif

The Spoilers:

To hide a certain piece of text and have it only be visible when a user moves the mouse over it, use the blockquote syntax with an additional exclamation point:

At the end of episode five, it turns out that

>! he's actually his father.

When I just saw it, I laughed and wondered if Stack Overflow Answers has become new IMDb Message Boards? If you have read a few posts on IMDb, you know what I am talking about.

However, when I stumbled on this question, it also makes sense. Gaming, television shows, movies, you don’t want any spoilers. Yes, Stack has those sites for those questions and discussions, but I am not a user there, so it didn’t occur to me the usefulness of Spoilers.

This markup syntax was added on 2010-12-02, almost four years ago, and I just learned about it and I had never seen any of uses of it on Stack Overflow or any computer related sites.

And I probably would never have a chance to use it, anyway.