May i know the in-line glossary in this page how it works?

May i know the in-line glossary in this page how it works?

Hi all the expert,

May i know the in-line glossary in this page how it works?

http://www.nikonusa.com/Find-Your-Nikon/Product/Digital-Camera/26191/COOLPIX-S8000.html

Any example to do the same function?

Thanks

AT

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