System Supervisory.
 SystemSup objects are used by the event monitor to send
 system events and alarms to outunits.
 All SystemSup objects are placed in the SystemEvent array
 in the MessageHandler object.

• MessageHandler

 Type of system event

 Description

 Specifies whether to enable or disable the action,

 Alarm message. Optional text which will be written out
 at alarm state if DetectOn is TRUE.

 Return message. Text which will be written in the event
 list at return to normal state.

 Specifies the type of the message (=DetectText ) which
 will be sent at alarm state.
 ALARM -- 64 The message always requires an
             acknowledgement and sent to the alarm

 INFO  -- 32 If the message requires acknowledgement is
             it sent to the info part of the alarm
             window and the event list, otherwise only

 Priorities concerning alarm messages.

  -- 67   A-alarm; highest priority. (=43Hex)
  -- 66   B-alarm  (= 42Hex)
  -- 65   C-alarm  (= 41Hex)
  -- 64   D-alarm ; lowest priority. (=40Hex)

 Bit map. A combination of flags can be attached to the
 message. The possible values are as follows:

 -- Return (1)  If this flag exists the return message ReturnText
                will be sent to the event lists at the out units,
 -- Ack (2)     If this flag exists the acknowledgement message
                will be sent to the event lists at the out-units,
 -- Bell(4)     If the single out unit has a beep-function this
                will be activated when the message is received.
 -- Force (8)   The message is sent to every out unit regardless
 -- InfoWindow (16)  If the message is of the type INFO it will be
                placed in the event list. If this flag exists the
                message is also placed in the INFO square of the
                alarm window where acknowledgement is to be done.
 -- Returned (32) The alarm status is set to returned already
                when the alarm is emitted.
 -- NoObject (64) Not used
 -- Email (128) The message will be handled by the email server
                and forwarded to the specified receiver.
 -- SMS (256)   The message will be handled by the SMS server
                and forwarded to the specified receiver.
 -- UserDetectTime (512) DetectTime is set by the user when the
                alarm condition is set.

 Reference to a sound object, that defines the sound at the operator
 place when the alarm is active. If no sound object is supplied, an
 ordinary beep is used. The sound object should be of class Sound
 or SoundSequence

 Optional text supplying more information about the event.
 The more text can for example contain actions to be made when an alarm is detected.

 Recipient for epost and mms alarms.
 The recipient is a user defined in the user database in the
 current system group.
 Recipient can also be a list of users separated by comma, eg
 'dennis, jimmy'. Also symbols defined in the Symbol table in
 the PostConfig object can be used. Symbols should be referenced
 with a $ sign before the symbol name, eg '$on_duty'.

 The users should be defined in the current system group or in a
 subgroup to this, If a subgroup is used, the subgroup should
 be specified in the recipient name, eg 'sms.dennis'.

 Attribute is filled in by the user if the input named
 IN is left open. If the input is connected the names
 are filled in by the PROVIEW/R system at compilation.

 Status value. Bit map containing 16 bits where the 8
 least significant bits denote the state and the 8 most
 significant bits the priority.
 The state is a combination of:

    -- 0    Normal state
    -- 1    Alarm state
    -- 2    Unacknowledged alarm
 The priority is one of the priorities EventPriority.

 The following status can exist:
    EventPriority + 1 => Priority + alarm state
    EventPriority + 3 => Priority + unacknowledged alarm
 and alarm state

 Date and time when alarm state was detected.

 Date and time when the last return to normal was
 detected.

 Event identity.