@code{midiMinimumVolume}.")
(midiMinimumVolume ,number? "Set the minimum loudness for MIDI.
Ranges from 0 to@tie{}1.")
- (midiChannelMapping ,symbol? "How to map MIDI channels: per @code{instrument} (default), @code{staff} or @code{voice}.")
+ (midiChannelMapping ,symbol? "How to map MIDI channels: per
+@code{staff} (default), @code{instrument} or @code{voice}.")
+ (midiBalance ,number? "Stereo balance for the MIDI channel
+associated with the current context. Ranges from@tie{}@w{-1} to@tie{}1,
+where the values@tie{}@w{-1} (@code{#LEFT}),@tie{}0 (@code{#CENTER})
+and@tie{}1 (@code{#RIGHT}) correspond to leftmost emphasis, center
+balance, and rightmost emphasis, respectively.")
+ (midiPanPosition ,number? "Pan position for the MIDI channel
+associated with the current context. Ranges from@tie{}@w{-1} to@tie{}1,
+where the values@tie{}@w{-1} (@code{#LEFT}),@tie{}0 (@code{#CENTER})
+and@tie{}1 (@code{#RIGHT}) correspond to hard left, center, and hard
+right, respectively.")
+ (midiReverbLevel ,number? "Reverb effect level for the MIDI channel
+associated with the current context. Ranges from 0 to@tie{}1
+(0=off,@tie{}1=full effect).")
+ (midiChorusLevel ,number? "Chorus effect level for the MIDI channel
+associated with the current context. Ranges from 0 to@tie{}1
+(0=off,@tie{}1=full effect).")
(minimumFret ,number? "The tablature auto string-selecting
mechanism selects the highest string with a fret at least
@code{minimumFret}.")
(graceSettings ,list? "Overrides for grace notes. This property
should be manipulated through the @code{add-grace-property} function.")
+
+ (hasAxisGroup ,boolean? "True if the current context is contained
+in an axis group.")
(hasStaffSpacing ,boolean? "True if the current
@code{CommandColumn} contains items that will affect spacing.")