The Message Board Parameters system table lets you control the width of the message board, its height, the amount of spacing between entries, the maximum number of entries, and whether or not G2 highlights new messages.
Item-configuration are expressed in workspace units. A workspace unit is one pixel when the workspace is scaled to full size, and proportionally smaller when the workspace is scaled down. Changes to this system table do not affect existing items. Defining the Minimum Display Interval
The Minimum-display-interval attribute defines the length of time that the message appears. If the validity interval of the antecedent of the rule is longer than the value of this attribute, that is how long the message displays. The default is indefinite. Minimum-display-interval to 0, messages appear only for as long as they are true. However, since the validity interval for some messages can be very short, you will probably want to set a minimum display interval to give the operator time to read the message. Class-Specific Attributes of Message Board Parameters
The class-specific attributes of the Message Board Parameters system table are: