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LeftEdge objects are created by: Break_align_engraver
Standard settings:
break-align-symbol(symbol):'left-edgeThis key is used for aligning and spacing breakable items.
break-align-anchor(number):ly:break-aligned-interface::calc-extent-aligned-anchorGrobs aligned to this break-align grob will have their X-offsets shifted by this number. In barlines, for example, this is used to position grobs relative to the (visual) center of the barline.
X-extent(pair of numbers):'(0 . 0)Hard coded extent in X direction.
non-musical(boolean):#tTrue if the grob belongs to a
NonMusicalPaperColumn.break-visibility(vector):#(#t #f #t)A vector of 3 booleans,
#(end-of-line unbroken begin-of-line).#tmeans visible,#fmeans killed.space-alist(list):'((custos extra-space . 0.0) (ambitus extra-space . 2.0) (time-signature extra-space . 1.0) (staff-bar extra-space . 0.0) (breathing-sign minimum-space . 0.0) (clef extra-space . 0.8) (first-note fixed-space . 2.0) (right-edge extra-space . 0.0) (key-signature extra-space . 0.0) (key-cancellation extra-space . 0.0))A table that specifies distances between prefatory items, like clef and time-signature. The format is an alist of spacing tuples:
(break-align-symbol type.distance), where type can be the symbolsminimum-spaceorextra-space.
This object supports the following interfaces:
item-interface, break-aligned-interface and grob-interface
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