LilyPond Internals Reference: 3.1.133 VoltaBracketSpanner

### 3.1.133 VoltaBracketSpanner

VoltaBracketSpanner objects are created by: Volta_engraver.

Standard settings:

> `after-line-breaking` (boolean):

>   `ly:side-position-interface::move-to-extremal-staff`

>   Dummy property, used to trigger callback for `after-line-breaking`.

> `axes` (list):

>   `'(1)`

>   List of axis numbers. In the case of alignment grobs, this should contain only one number.

> `direction` (direction):

>   `1`

>   If `side-axis` is `0` (or `#X`), then this property determines whether the object is placed `#LEFT`, `#CENTER` or `#RIGHT` with respect to the other object. Otherwise, it determines whether the object is placed `#UP`, `#CENTER` or `#DOWN`. Numerical values may also be used: `#UP`=`1`, `#DOWN`=`-1`, `#LEFT`=`-1`, `#RIGHT`=`1`, `#CENTER`=`0`.

> `no-alignment` (boolean):

>   `#t`

>   If set, don’t place this grob in a `VerticalAlignment`; rather, place it using its own `Y-offset` callback.

> `outside-staff-priority` (number):

>   `600`

>   If set, the grob is positioned outside the staff in such a way as to avoid all collisions. In case of a potential collision, the grob with the smaller `outside-staff-priority` is closer to the staff.

> `padding` (dimension, in staff space):

>   `1`

>   Add this much extra space between objects that are next to each other.

> `side-axis` (number):

>   `1`

>   If the value is `#X` (or equivalently `0`), the object is placed horizontally next to the other object. If the value is `#Y` or `1`, it is placed vertically.

> `X-extent` (pair of numbers):

>   `ly:axis-group-interface::width`

>   Hard coded extent in X direction.

> `Y-extent` (pair of numbers):

>   `ly:axis-group-interface::height`

>   Hard coded extent in Y direction.

> `Y-offset` (number):

>   `ly:side-position-interface::y-aligned-side`

>   The vertical amount that this object is moved relative to its Y-parent.

This object supports the following interface(s): axis-group-interface, grob-interface, side-position-interface, spanner-interface and volta-interface.

#### Internals Reference