### 3.2.80 ottava-bracket-interface

An ottava bracket.

#### User settable properties:

> `edge-height` (pair)

>   A pair of numbers specifying the heights of the vertical edges: `(left-height . right-height)`.

> `bracket-flare` (pair of numbers)

>   A pair of numbers specifying how much edges of brackets should slant outward. Value `0.0` means straight edges.

> `shorten-pair` (pair of numbers)

>   The lengths to shorten a text-spanner on both sides, for example a pedal bracket. Positive values shorten the text-spanner, while negative values lengthen it.

> `minimum-length` (dimension, in staff space)

>   Try to make a spanner at least this long, normally in the horizontal direction. This requires an appropriate callback for the `springs-and-rods` property. If added to a `Tie`, this sets the minimum distance between noteheads.

This grob interface is used in the following graphical object(s): OttavaBracket.

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