### 2.2.160 `Volta_engraver`

Make volta brackets.

Music types accepted: `dal-segno-event`, `fine-event` and `volta-span-event`

`currentCommandColumn` (graphical (layout) object)

Grob that is X-parent to all current breakable items (clef, key signature, etc.).

`repeatCommands` (list)

A list of commands related to volta-style repeats. In general, each element is a list, ```'(command args…)```, but a command with no arguments may be abbreviated to a symbol; e.g., `'((start-repeat))` may be given as `'(start-repeat)`.

`end-repeat`

End a repeated section.

`start-repeat`

Start a repeated section.

`volta text`

If text is markup, start a volta bracket with that label; if text is `#f`, end a volta bracket.

`stavesFound` (list of grobs)

A list of all staff-symbols found.

`voltaSpannerDuration` (moment)

This specifies the maximum duration to use for the brackets printed for `\alternative`. This can be used to shrink the length of brackets in the situation where one alternative is very large.

This engraver creates the following layout object(s): `VoltaBracket` and `VoltaBracketSpanner`.

`Volta_engraver` is part of the following context(s) in `\layout`: `ChordGridScore`, `Score` and `StandaloneRhythmScore`.