Forum:Hide And Show button

So i was woundering how do you do something like where you have a header and you have [show] and hide ?   OA   Speak    Contribs    VD     19:20, March 8, 2012 (UTC)


 * See instructions on ShowHide on dev wiki.


 * Cant understand that   OA    Speak    Contribs    VD    19:50,3/8/2012