| http://www.w3.org/ns/prov#value | - In many cases off-the-shelf browsers can be used effectively, and even browsers previously installed on a user station for other purposes can be employed, by exploiting standard features for extending such products, including helper applications, plug-ins, applets, and API's. [0290] Briefly, such mechanisms allow a standard browser to be used to view content and select links to follow to additiona
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