For a complete list of the controls available for record and replay of Web applications, see the browser.inc and explorer.inc files. By default, these files are located in C:\Program Files\Silk\SilkTest\extend\. The browser.inc file contains the objects that are shared by all Web browsers, for example the Back button on the toolbar. Objects that are unique to each browser are included in a separate file. Internet Explorer objects are contained in explorer.inc.