+/// Event ID that provides a request for list of non-fixed objects necessary for DoF = 0
+static const char * EVENT_GET_DOF_OBJECTS = "GetDoFObjects";
+
+/// Event ID that provides a request for list of non-fixed objects necessary for DoF = 0
+static const char * EVENT_DOF_OBJECTS = "DoFObjects";
+
+/// Event ID that requests updates visual attributes for presentations
+static const char * EVENT_VISUAL_ATTRIBUTES = "UpdateVisualAttributes";
+