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The chat interface allows the user to select a character, train the NLU, see what the system says, send text to the system and momentarily block event processing in the dialogue manager.
If you design multiple characters defined under resources/characters/, the one for which the policy was loaded correctly will be available in the Characters menu. select one to chat with it.
The NLU menu allows you to retrain the NLU after you have made changes to the user utterances file.
The Controls menu has a voice to pause the event processing so that you can check the logs before the next timer event comes in.
To send text to teh character, just type in the bottom part of the interface and press ENTER.
The latest messages sent by the system will be highlighted in green.