Int 2C Fn 0011  P - Cloaking V1.01 - "switch_vms_and_call_back"            [m]

   AX = 0011h
   EBX = handle of VM to be made active
   SI:EDI -> 32-bit FAR completion procedure

Return: CF clear if successful (scheduled)
   CF set on error

Notes: this function is only available while MS Windows is running
   the completion procedure is called with CF clear if the specified
     VM has been made active, or with CF set on error

See Also: AX=000Fh,AX=0012h