+// property of root that describes the machine's UUID as a string
+#define kIOPlatformUUIDKey "IOPlatformUUID" // (OSString)
+
+// IODTNVRAM property keys
+#define kIONVRAMDeletePropertyKey "IONVRAM-DELETE-PROPERTY"
+#define kIONVRAMSyncNowPropertyKey "IONVRAM-SYNCNOW-PROPERTY"
+#define kIONVRAMActivateCSRConfigPropertyKey "IONVRAM-ARMCSR-PROPERTY"
+#define kIODTNVRAMPanicInfoKey "aapl,panic-info"
+
+// keys for complex boot information
+#define kIOBootDeviceKey "IOBootDevice" // dict | array of dicts
+#define kIOBootDevicePathKey "IOBootDevicePath" // arch-neutral OSString
+#define kIOBootDeviceSizeKey "IOBootDeviceSize" // OSNumber of bytes
+
+// keys for OS Version information
+#define kOSBuildVersionKey "OS Build Version"
+