Specifies an optional expression to match one or more capabilites see http://msdn.microsoft.com/en-us/library/vstudio/mi ...

Specifies an optional expression to match one or more capabilites see http://msdn.microsoft.com/en-us/library/vstudio/microsoft.visualstudio.shell.interop.ivsbooleansymbolexpressionevaluator.evaluateexpression.aspx. Capabilities are exposed by project types via the hierarchy as a property VSHPROPID_ProjectCapabilities. This enables the template to be shared by multiple project types which have common applicable capabilities.