members posting in a topic to see hidden stuff

i honestly didn't know how else to explain this, but i've seen on some forums that a member opened a thread and 'hid' some stuff with codes and when a member posted in that topic they could see the whole post aka also the hidden stuff.
i don't know how to explain this, but i hope you understand and someone can help me with how to do this (:

Code:

[hide][/hide]

Use the [ hide] [ /hide] code for that ( out of space beten [ h and [ /

Also the button with the red line above, if you click that it will generate hidden tags.

thanks you both
so that's all i gotta do? ^^

novacane. wrote:thanks you both
so that's all i gotta do? ^^

 Yep,

Then when someone comes along and posts something in that thread, they'll be able to see the hidden content.

thank you again, i never knew what this hide button did haha