The document discusses administering and securing Internet Explorer, configuring application compatibility, and configuring application restrictions on Windows 7 systems. It covers topics like compatibility view in IE8, managing add-ons, configuring security zones and the SmartScreen filter in IE, and tools for testing and ensuring compatibility of legacy applications like the Application Compatibility Toolkit. It also discusses using software restriction policies and the new AppLocker feature to create rules restricting which applications users can run.