[TYPO3] Linking to content elements

[Rosina Bignall]

I'm sure this is a stupid question and I've just missed it somewhere... 
but, I'll ask anyway because I can't find the answer.

Let's say that I've put together a content element, perhaps an 
advertisement or short article or something, and I want to display it in 
multiple pages on my website.  I could copy it to all the places it 
would be displayed, but then if I need to make a change I may have to go 
to a hundred different places to change it.  How can I link to it so 
that I just edit it in one place.

Thanks
Rosina
http://LearnersVillage.com/
http://RosinaBignall.com/