MSG0              = 0
MSG1              = 1
MSG2              = 2
MSG3              = 3
MSG4              = 4
CONFIRMATION      = 5
RESTART           = 6
DEF_INIT          = 101
DEF_FAS           = 102
DEF_REGISTER      = 103
DEF_FID           = 104
DEF_EXECUTE       = 105
DEF_RESULT        = 106
TERMINATE_MESSAGE = 120