- o -

• Object : Selection
• OccasionalLED : ArdourWidgets::ArdourButton
• OccasionalText : ArdourWidgets::ArdourButton
• Octave : SequencerView
• OctaveDown : ArdourSurface::Push2
• OctaveUp : ArdourSurface::Push2
• Off : ArdourSurface::LaunchControlXL , ArdourSurface::LP_X::LaunchKey4
• off : ArdourSurface::NS_MCU::LedState
• Off : ArdourSurface::NS_MCU::Surface , ArdourSurface::OSC
• off : ArdourSurface::US2400::LedState
• OK : ARDOUR::PluginScanLogEntry , LuaDialog::Message
• OK_Cancel : LuaDialog::Message
• on : ArdourSurface::NS_MCU::LedState , ArdourSurface::US2400::LedState
• OneHz : ARDOUR::DummyAudioPort
• OneShot : ARDOUR::Trigger
• OneShot16th : ArdourSurface::Push2::LED
• OneShot24th : ArdourSurface::Push2::LED
• OneShot2th : ArdourSurface::Push2::LED
• OneShot4th : ArdourSurface::Push2::LED
• OneShot8th : ArdourSurface::Push2::LED
• OnlyFavorites : ARDOUR::PluginManager
• OnlyLoop : ARDOUR::Session
• OnlyPunch : ARDOUR::Session
• OnlySelf : TimeAxisView
• Open : SessionDialog
• OpenVST : ArdourSurface::CC121
• OPT_FFTW_MEASURE : ArdourZita::Convlevel , ArdourZita::Convproc
• OPT_LATE_CONTIN : ArdourZita::Convlevel , ArdourZita::Convproc
• OPT_VECTOR_MODE : ArdourZita::Convlevel , ArdourZita::Convproc
• Option : ArdourSurface::NS_MCU::Button , ArdourSurface::US2400::Button
• ORDER : ArdourSurface::Console1
• OrderSet : ARDOUR::PresentationInfo
• Oriental : MusicalMode
• OTHER : BundleEditorMatrix
• OtherRange : Editor
• OURS : BundleEditorMatrix
• Out : CrossfadeEditor
• OutOfMemoryError : ARDOUR::AudioBackend
• OutOfScaleNote : ArdourSurface::Push2
• Output : ARDOUR::CoreAudioBackend , ARDOUR::IO , ArdourSurface::CC121 , ArdourSurface::FaderPort , PluginPinWidget
• OUTPUT_CONFIG_VIEW : RouteParams_UI
• OUTPUT_FORMAT_5_1 : ARDOUR::SurroundReturn
• OUTPUT_FORMAT_7_1_4 : ARDOUR::SurroundReturn
• OUTPUT_METER_L : ArdourSurface::Console1
• OUTPUT_METER_R : ArdourSurface::Console1
• OutputChannelCountNotSupportedError : ARDOUR::AudioBackend
• OutputConnected : ArdourSurface::CC121 , ArdourSurface::FP8::FaderPort8 , ArdourSurface::LaunchControlXL , ArdourSurface::NS_MCU::Surface , ArdourSurface::US2400::Surface , GenericMidiControlProtocol , MIDISurface
• Outputs : ArdourSurface::NS_MCU::Button , ArdourSurface::NS_MCU::MackieControlProtocol
• Outside : ArdourCanvas::Curve , ArdourCanvas::FramedCurve
• OverallProcess : ARDOUR::Session
• Overtone : MusicalMode
• Overwrite : ARDOUR::SessionEvent
• OverwriteAll : ARDOUR::SessionEvent