ly:duration-dot-count
ly:duration-factor
ly:duration-log
+ ly:duration-scale
ly:duration<?
ly:duration?
ly:error
ly:stencil-combine-at-edge
ly:stencil-expr
ly:stencil-extent
+ ly:stencil-stack
ly:stencil-translate
ly:stencil-translate-axis
ly:stencil?