### 1.1.43 MultiMeasureRestMusic

Rests that may be compressed into Multi rests.

Syntax: `R2.*4` for 4 measures in 3/4 time.

Properties:

> `elements-callback` (procedure):

>   `mm-rest-child-list`

>   Return a list of children, for use by a sequential iterator. Takes a single music parameter.

> `iterator-ctor` (procedure):

>   `ly:sequential-iterator::constructor`

>   Function to construct a `music-event-iterator` object for this music.

> `name` (symbol):

>   `'MultiMeasureRestMusic`

>   Name of this music object.

> `types` (list):

>   `'(general-music multi-measure-rest)`

>   The types of this music object; determines by what engraver this music expression is processed.

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