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3.2.137 staff-highlight-interface
A colored span to highlight a music passage.
User settable properties:
-  
bound-prefatory-paddings(pair of numbers) For a highlight, the amount of padding to insert at a bound from a prefatory item that is not a bar line.
-  
shorten-pair(pair of numbers) The lengths to shorten on both sides a hairpin or text-spanner such as a pedal bracket. Positive values shorten the hairpin or text-spanner, while negative values lengthen it.
Internal properties:
-  
columns(array of grobs) An array of grobs, typically containing
PaperColumnorNoteColumnobjects.-  
elements(array of grobs) An array of grobs; the type is depending on the grob where this is set in.
This grob interface is used in the following graphical object(s): StaffHighlight.
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