On this tab, you can see the report displaying its current data. When you click on the Save icon, the report will be saved and stored in the Saved reports tab like an archive. When you click Print, a standard printing dialog will be opened.
More resources can be found at Developer's Guide -> Modules -> Reporting -> Overview.
Page url: http://devnet.kentico.com/docs/5_5r2/contexthelp/index.html?view_tab2.htm