This documentation is for XNAT versions 1.6.0 - 1.6.5. You can find the latest documentation for XNAT 1.7 at https://xnat.org/documentation
After generating a data table via a search (either a standard search, data type report, or an advanced search), you'll usually filter and modify that data set until you get the structure and parameters that you want. XNAT lets you save those search parameters so that at any point in the future, you can dynamically reload that data table using freshly populated data. This is called a stored search.
XNAT Site Administrators can create site-wide stored searches, otherwise known as bundles. See Sharing Stored Searches in the Administrator documentation for more details.