To display trace messages:
By default, G2 does not display trace messages.
To display trace messages:
Tracing-message-level attribute in the Debugging Parameters system table.
Tracing-and-breakpoints-enabled? attribute in the Debugging Parameters system table to yes.
For example, suppose you have an action button that executes a procedure, which in turn calls another procedure. Setting the tracing message level to level 1 (trace messages on entry and exit) and enabling tracing and breakpoints causes G2 to display trace messages each time G2 begins and finishes executing each procedure, as this picture shows.
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This example shows the trace messages that G2 displays each time a variable receives a new value.
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This example shows trace messages that G2 displays during rule execution.
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Note: Displaying trace messages for an entire knowledge base often creates a backlog of messages. This makes it difficult to display a menu or perform other activities while G2 is providing trace messages.
To stop displaying trace messages, press Control + z. G2 pauses the knowledge base and stops producing trace messages. When you resume, G2 resumes displaying trace messages, until you change settings to tell it not to display trace messages.