The following built-in segment attributes are used in conjunction with internal messaging:
Glb.Dbg_DB
Glb.Dbg_LG
Glb.Dbg_OLTP
Glb.Error
Glb.ExamKey
Glb.InputData
Glb.OLTPService
Glb.OLTPSubType
Glb.OLTPType
Glb.OLTPValue