grobs.")
(slur ,ly:grob? "A pointer to a @code{Slur} object.")
(spacing ,ly:grob? "The spacing spanner governing this section.")
+ (space-increment ,ly:dimension? "The amount by which the total duration
+of a multimeasure rest affects horizontal spacing. Each doubling of the
+duration adds @code{space-increment} to the length of the bar.")
(spacing-wishes ,ly:grob-array? "An array of note spacing or staff spacing
objects.")
(span-start ,boolean? "Is the note head at the start of a spanner?")