: How do I raise or lower Lilypond's "repeat percent" symbol? Lilypond's "repeat percent" construct enables you to express a repeating musical snippet by writing the first occurrence in full then using a symbol as a sort of

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You can use the override: override RepeatSlash.Y-offset = #3 in the layout block.

score
{
new Staff notes
layout
{
override RepeatSlash.Y-offset = #3
}
}

NB Lilypond uses objects of 4 different types to engrave the symbol, so what sort of repeating figure determines which type-name you need to use in the override command:

RepeatSlash for a slash or multiple slashes, when the repeating figure is less than a full bar, and the notes are the same length
DoubleRepeatSlash for a symbol like .//., when the repeating figure is less than a full bar, and the notes are not the same length
PercentRepeat for a symbol like ./., when the repeating figure is exactly one bar
DoublePercentRepeat for a symbol like .//. straddling the barline, when the repeating figure is exactly two bars

For example, for a one-bar repeating figure you might use this command:

override PercentRepeat.Y-offset = #3

The default value is #0 which puts the symbol in the middle of the stave. The unit of measurement is the distance between lines in a stave. So to lower the symbol so that its top is on the bottom line, use e.g. override PercentRepeat.Y-offset = #-3.