Explanation/Reference:
Explanation:
Configuration item settings of the type Windows Management Instrumentation (WMI), registry, script,

and all mobile device settings in Configuration Manager letyou automatically remediate noncompliant settings when they are found.
A detection method in Configuration Manager contains rules that are used to detect whether an

application is installed on a computer. This detection occurs before theconfiguration item is assessed for compliance. To detect whether an application is installed, you can detect the presence of a Windows Installer file for the application, use a custom script, or select Always assume application is installed to assess the configuration itemfor compliance regardless of whether the application is installed.
References: Introduction to Compliance Settings in Configuration Manager
http://technet.microsoft.com/en-us/library/gg682139.aspx