Support for controlling MIDI expression

[lilypond.git] / scm / define-context-properties.scm

diff --git a/scm/define-context-properties.scm b/scm/define-context-properties.scm
index b88c8f59f891ce93809c67ba60e081b367afe1c9..5f92397dca3bbe9ad206af59cd302dd9aed82c71 100644 (file)
--- a/scm/define-context-properties.scm
+++ b/scm/define-context-properties.scm
@@ -458,6 +458,9 @@ 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.")
+     (midiExpression ,number? "Expression control for the MIDI
+channel associated with the current context.  Ranges from 0
+to@tie{}1 (0=off,@tie{}1=full effect).")
      (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).")