Instrument marks appear as markup in the left margin of your score.
Use contexttools to create instrument marks:
abjad> instrument_mark = contexttools.InstrumentMark('Violin ', 'Vn. ')
abjad> instrument_mark
InstrumentMark('Violin ', 'Vn. ')
Use attach() to attach any mark to a component:
abjad> staff = Staff("c'4 d'4 e'4 f'4")
abjad> instrument_mark.attach(staff)
abjad> show(staff)
Use contexttools to get the instrument mark attached to a component:
abjad> contexttools.get_instrument_mark_attached_to_component(staff)
InstrumentMark('Violin ', 'Vn. ')(Staff{4})
Or to get the instrument currently in effect for a component:
abjad> contexttools.get_effective_instrument(staff[1])
InstrumentMark('Violin ', 'Vn. ')(Staff{4})
Use detach() to detach instrument marks from a component one at a time:
abjad> instrument_mark.detach()
abjad> instrument_mark
InstrumentMark('Violin ', 'Vn. ')
abjad> show(staff)
Or use contexttools to detach instrument marks all at once:
abjad> instrument_mark = contexttools.InstrumentMark('Violin ', 'Vn. ')
abjad> instrument_mark.attach(staff)
abjad> instrument_mark
InstrumentMark('Violin ', 'Vn. ')(Staff{4})
abjad> show(staff)
abjad> contexttools.detach_instrument_marks_attached_to_component(staff)
abjad> instrument_mark
InstrumentMark('Violin ', 'Vn. ')
abjad> show(staff)
Use start_component to inspect the component to which an instrument mark is attached:
abjad> instrument_mark = contexttools.InstrumentMark('Flute ', 'Fl. ')
abjad> instrument_mark.attach(staff)
abjad> show(staff)
abjad> instrument_mark.start_component
Staff{4}
Use instrument_name_markup to get the instrument name of any instrument mark:
abjad> instrument_mark.instrument_name_markup
Markup('Flute ')
And use short_instrument_name_markup to get the short instrument name of any instrument mark:
abjad> instrument_mark.short_instrument_name_markup
Markup('Fl. ')