Application Testing by Simulation > About Testing Applications by Simulation > Debugging Features
	Debugging Features

Dialog Designer provides the following features and tools designed to help you debug applications:

• Highlighting during simulation - While the application project is in a simulation mode, the Dialog Designer highlights each node as the Avaya Application Simulator (AAS) processes the nodes.This feature makes it easy to track progress through the application as the simulation progresses.

• Input tab, AAS progress display - During application simulation, the AAS presents a step-by-step readout of what is happening as the simulation progresses. The AAS displays this progress in a pane of the Input tab. Even after the simulation ends, you can scroll back through this output to analyze what happened during simulation.

• Debug tracing to output in Console view or trace log file - If debug tracing is enabled, Dialog Designer directs the output of the debug tracing to two destinations: the Console view display and the trace log file. This output consists primarily of a transcript of the VoiceXML output that is generated while the application is being run. See Trace.

• Application tracking node with debug options - Dialog Designer provides a special node, the application Tracking node, which was designed to aid in debugging applications. This node makes use of two palette options-the Trace item and the Report item-to help with application tracking and debugging. See Report and Trace.

• Scripting of inputs and responses - For those situations where you do not want or are not able to use the various built-in mechanisms for simulating caller responses, you can create an XML script to tell the application how the caller responds during simulation. See Creating Scripts for Testing.

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