Set a break in the current staff.
unit gives the width of the break and defaults to 0.5 cm.
As a side effect, when the width exceeds 0.5 cm and when all the voices have the same staffbreak, the left side of the staff system is redrawn.
f is not present, the staff break is removed if it occurs
at the start or end of the music line.
abc2svg documentation source author - page hosted by Free