+/** HLT Track
+ * - Struct for Tracks based on AliExternalTrackParam
+ * - varying origin
+ * @ingroup alihlt_component_datatypes
+ */
+#define kAliHLTTrackDataTypeID {'H','L','T','T','R','A','C','K'}
+
+/** Track Monte Carlo information
+ * @ingroup alihlt_component_datatypes
+ */
+#define kAliHLTTrackMCDataTypeID {'T','R','A','C','K','_','M','C'}
+
+/** TClonesArray of AliExternalTrackParam
+ * @ingroup alihlt_component_datatypes
+ */
+#define kAliHLTExternalTrackParamDataTypeID {'T','C','A','E','X','T','T','R'}
+
+/** HLT Jet
+ * - Struct for jets based on AliHLTJETJets
+ * - varying origin
+ * @ingroup alihlt_component_datatypes
+ */
+#define kAliHLTJetDataTypeID {'H','L','T','J','E','T','V','0'}
+
+/** dEdx data
+ * Common data type for the dEdx
+ * format depends on the origin (detector)
+ * @ingroup alihlt_component_datatypes
+ */
+# define kAliHLTdEdxDataTypeID {'D','E','D','X',' ',' ',' ',' '}
+
+/** dNdPt data
+ * Common data type for the dNdPt output object
+ * @ingroup alihlt_component_datatypes
+ */
+# define kAliHLTdNdPtDataTypeID {'D','N','D','P','T',' ',' ',' '}
+
+/** Global input trigger counters data block type.
+ * @ingroup alihlt_component_datatypes
+ */
+# define kAliHLTInputTriggerCountersDataTypeID {'I','N','T','R','G','C','N','T'}
+
+/** Global output trigger counters data block type.
+ * @ingroup alihlt_component_datatypes
+ */
+# define kAliHLTOutputTriggerCountersDataTypeID {'O','T','T','R','G','C','N','T'}
+
+/** Generic meta data block type ID.
+ * @ingroup alihlt_component_datatypes
+ */
+# define kAliHLTMetaDataTypeID {'M','E','T','A','D','A','T','A'}