2.2.12 Break_align_engraver
Align grobs with corresponding break-align-symbols into groups, and order the groups according to breakAlignOrder. The left edge of the alignment gets a separate group, with a symbol left-edge.
This engraver creates the following layout object(s):
BreakAlignGroup, BreakAlignment and LeftEdge.
Break_align_engraver is part of the following context(s): Score.