**harpSalzedoFluidicSoundsLeft** and **harpSalzedoFluidicSoundsRight** are
similar in function to noteheads, and should be positioned relative to
note stems in the same way.

**harpSalzedoOboicFlux** and **harpSalzedoPlayUpperEnd** may be repeated to
create a continuing line, indicating the duration of the technique.
