Add some more explanatory text.
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.\" $NetBSD: mixerctl.1,v 1.6 1998/04/27 16:55:23 augustss Exp $
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.\" $NetBSD: mixerctl.1,v 1.7 1998/05/09 12:37:42 augustss Exp $
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.\" Copyright (c) 1997 The NetBSD Foundation, Inc.
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.\" All rights reserved.
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.\"
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@ -84,6 +84,43 @@ The
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flag shows the possible values of enumeration and set valued
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variables. Enumerated values are shown in [] and set values
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are shown in {}.
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.Pp
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The exact set of controls that can be manipulated depends on
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the mixer. The general format (in both getting and setting a value)
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is
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.br
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.Va "class.name" = value
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.br
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The
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.Va class
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can have values like
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.Li inputs
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or
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.Li outputs
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indicating that the control affects the input resp. output to the
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mixer. The
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.Va name
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indicates what part of the mixer the control affects.
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Continous mixer values, e.g., volume, have numeric values
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in the range 0-255. If value can be set for each channel independently
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the values are printed separated by commas. Discrete mixer values, e.g.,
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the recording source, have symbolic names. Depending on the mixer it
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may either be an enumeration or a set.
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.Sh EXAMPLES
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The commmand
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.Dl "mixerctl -a -v"
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can produce
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.Bd -literal
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inputs.mic=0,0 volume
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inputs.mic.mute=off [ off on ]
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inputs.cd=220,220 volume
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inputs.cd.mute=off [ off on ]
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inputs.dac=220,220 volume
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inputs.dac.mute=off [ off on ]
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record.record=220,220 volume
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record.record.source=mic [ mic cd dac ]
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monitor.monitor=0 volume
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.Ed
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.Sh FILES
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.Bl -tag -width /dev/mixer
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.It Pa /dev/mixer
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