### 3.1.84 ParenthesesItem

ParenthesesItem objects are created by: Parenthesis_engraver.

Standard settings:

> `font-size` (number):

>   `-6`

>   The font size, compared to the ‘normal’ size. `0` is style-sheet’s normal size, `-1` is smaller, `+1` is bigger. Each step of 1 is approximately 12% larger; 6 steps are exactly a factor 2 larger. Fractional values are allowed.

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

>   `0.2`

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

> `stencil` (stencil):

>   `parentheses-item::print`

>   The symbol to print.

> `stencils` (list):

>   `parentheses-item::calc-parenthesis-stencils`

>   Multiple stencils, used as intermediate value.

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

>   `'(0 . 0)`

>   Extent (size) in the X direction, measured in staff-space units, relative to object’s reference point.

This object supports the following interface(s): font-interface, grob-interface, item-interface and parentheses-interface.

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