Any view listed in the left panel of Stratum.Viewer can be saved as a web part. That action creates a *.dwp file that can be used in a few different ways, giving you the ability to extend the use of the view beyond the Stratum.Viewer interface. The main use is to import the web parts into a Microsoft SharePoint environment or stand-alone SharePoint Services pages.
When you set up a web part, you determine whether or not the implemented web part will display the main toolbar for the view and the View Filter section for the view. The options you choose are stored in a query string as part of the web part *.dwp file.