I have read :
"A customer licensed with Windows Server 2008 R2 Standard may run one instance of the server software in the physical operating system environment (POSE) and one instance of the server software in a virtual operating system environment (VOSE). If the customer is running the instance in the VOSE then the instance running in the POSE can only be used to manage the instance of the OS running in the VOSE."
Does the text in bold means that one can not run other OEM's application on the instance running in the POSE?