-ADD_INTERFACE (Lyric_extender, "lyric-extender-interface",
- "The extender is a simple line at the baseline of the lyric "
- "that helps show the length of a melissima (tied/slurred note).",
- "next thickness heads");
+ADD_INTERFACE (Lyric_extender,
+ "The extender is a simple line at the baseline of the lyric"
+ " that helps show the length of a melisma (a tied or slurred"
+ " note).",
+
+ /* properties */
+ "heads "
+ "left-padding "
+ "next "
+ "right-padding "
+ "thickness "
+ );