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This tab can also be accessed by using the 'Configure' button in the Data Access tab of the main window. This is the list of all current servers, including the inactive ones; this is also where you can add new servers. You can also set up personal synonyms. This is also where you can clear the IGB cache, another important function if IGB is behaving oddly. The best description of using this whole panel (data sources, synonyms and cache) can be found in the Adding (and Removing) Data Sources page and its child pages.