Vertically centering paired figured bass extenders
Where figured bass extender lines are being used by setting
useBassFigureExtenders to #t, pairs of congruent figured
bass extender lines are vertically centered if
figuredBassCenterContinuations is set to #t.
<< \relative c' { \repeat unfold 3 { c8 c b b a a c16 c b b } } \figures { \set useBassFigureExtenders = ##t <6+ 4 3>4 <6 4 3>8 r <6+ 4 3>4 <6 4 3>8 <4 3+>16 r \set figuredBassCenterContinuations = ##t <6+ 4 3>4 <6 4 3>8 r <6+ 4 3>4 <6 4 3>8 <4 3+>16 r \set figuredBassCenterContinuations = ##f <6+ 4 3>4 <6 4 3>8 r <6+ 4 3>4 <6 4 3>8 <4 3+>16 r } >>