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+What: /sys/bus/hid/drivers/prodikeys/.../channel
+Date: April 2010
+KernelVersion: 2.6.34
+Contact: Don Prince <dhprince.devel@yahoo.co.uk>
+Description:
+ Allows control (via software) the midi channel to which
+ that the pc-midi keyboard will output.midi data.
+ Range: 0..15
+ Type: Read/write
+What: /sys/bus/hid/drivers/prodikeys/.../sustain
+Date: April 2010
+KernelVersion: 2.6.34
+Contact: Don Prince <dhprince.devel@yahoo.co.uk>
+Description:
+ Allows control (via software) the sustain duration of a
+ note held by the pc-midi driver.
+ 0 means sustain mode is disabled.
+ Range: 0..5000 (milliseconds)
+ Type: Read/write
+What: /sys/bus/hid/drivers/prodikeys/.../octave
+Date: April 2010
+KernelVersion: 2.6.34
+Contact: Don Prince <dhprince.devel@yahoo.co.uk>
+Description:
+ Controls the octave shift modifier in the pc-midi driver.
+ The octave can be shifted via software up/down 2 octaves.
+ 0 means the no ocatve shift.
+ Range: -2..2 (minus 2 to plus 2)
+ Type: Read/Write