Using "Spoiler" Tags

What are spoiler tags?
Spoiler tags are code that hides text.

What is the purpose of hiding text?
If you are writing a movie review and want to highlight a specific event that is considered a spoiler, you may want to use the following code, as to not giveaway important parts of the plot:

Code:

[spoiler][/spoiler]

Any text within the above tags will be hidden and only viewable upon clicking it.

Here is a functional example:
Click the blank field of the spoiler to show the text.

Spoiler: