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The GetTagValues and GetQueryTagValues actions allow you to run parametric searches.
A parametric search allows you to search for items by their characteristics (the values in certain fields). When you provide fixed values in parametric fields, the parametric search returns consistent values in the non-fixed parametric fields. For example, you can search an IDOL Content Component wine database for specific wine varieties from a specific region by specifying which fields must match these characteristics, so that only wines that are of the specified variety and from the specified region are returned.
Refer to the IDOL Server Administration Guide for more information.