Take a look at
http://tavi.sourceforge.net/WikkiTikkiTavi, this is the wiki I'm using at my institute for internal documentation. Just browse at this site and explore it and you should understand what it is and what it does. And surely you will enjoy this technique
. Especially try the "
Sandbox".
There are of course many other wiki implementations and they all have different features, this one is just an example I know quiet well.