Image maps are pictures (graphics or characters) that have clickable hot spots. Big deal, eh? By now you know that graphics and characters can be hyperlinks, so who needs a clickable image map? Well, ...

As the memorandum noted, web mapping services are a convenient and generally reliable source of information, and their use in litigation can realize important efficiencies for the courts.

The past as "big data" - a gallery of 500 years of book images and interactively mapping two centuries of history.