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-<p>Demean: subtract the mean of the samples from each
-sample. Selecting this option automatically sets the
-<b>−z</b> option.</p>
+<p>Do not demean. (Don’t subtract the mean of the
+samples from each sample.)</p>
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-<p>Scale the .wav file output with preservation of the zero
-value</p>
+<p>Scale the .wav file output <b>*without*</b> preservation
+of the zero value</p>
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