In SharePoint 2007 it was possible to save a site as a site template with a .stp extension. Saving a site as a template can be done from the site settings user interface. The .stp file is, like most SharePoint specific file extensions, a .cab file. The .stp file contains a link to the original site definition that the saved site depended on and the delta between that site definition and the saved site. In SharePoint 2010 we can still save sites as templates in much the same way. However, saving a site as a template won’t create a...