A centred hyphen is a simple line between lyrics used to divide syllables
dash-period (number)height (dimension, in staff space)length (dimension, in staff space)minimum-length (dimension, in staff space)spacing-procedure property.
thickness (number)linethickness.
This grob interface is used in the following graphical objects: LyricHyphen
This page is for LilyPond-2.4.5 (stable-branch).