### 3.2.57 ligature-bracket-interface

A bracket indicating a ligature in the original edition.

#### User settable properties:

> `width` (dimension, in staff space)

>   The width of a grob measured in staff space.

> `thickness` (number)

>   Line thickness, generally measured in `line-thickness`.

> `height` (dimension, in staff space)

>   Height of an object in `staff-space` units.

This grob interface is not used in any graphical object.

#### Internals Reference v2.18.2 (稳定分支).