### 3.2.104 spacing-options-interface

Supports setting of spacing variables.

#### User settable properties:

> `spacing-increment` (number)

>   Add this much space for a doubled duration. Typically, the width of a note head. See also spacing-spanner-interface.

> `shortest-duration-space` (dimension, in staff space)

>   Start with this much space for the shortest duration. This is expressed in `spacing-increment` as unit. See also spacing-spanner-interface.

This grob interface is used in the following graphical object(s): GraceSpacing and SpacingSpanner.

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