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You are now presented with the firehose GUI. It is organized into a series of tabs which guide you through the linear process of reduction steps. 
By default, you are started in the "setup" tab, which requires only two simple operations. First, you can choose the directory where firehose looks for the raw data, if you did not use the default value suggested above. Firehose will never overwrite files in this space, so your raw data will remain safe.
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