Right click on your "Chanel1\tChanel2\Ratio\n" string constant and make sure that '"/" Codes Display' is selected. From your description of what's happening, it sounds like the constant in in 'Normal Display' mode so the text is written as it looks.
(and maybe you want "Chanel1\tChanel2\tRatio\n" to get a second tab)?
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Fading out. " ... J. Arthur Rank on gong."