Thanks for that Kieren, it works and is very flexible I couldn't find an
obvious switch for line alignment (top, center, bottom), so I feared that
lambda would be appearing :-) FWIW I checked a handful of scores each from
Schott, Universal, Faber, Ricordi and while not identical, they lean towards
top aligned for octave above, and bottom aligned for octave below. Leduc's late
Messiaen uses centered lines and here I see some some manual tweaking when
spacing gets tight, which your snippet would be perfect for. Damian (and Carl,
I got your post just this morning for some reason, thanks for that)
