LilyPond Internals Reference: 1.1.52 PartialSet

### 1.1.52 PartialSet

Create an anacrusis or upbeat (partial measure).

Properties:

> `iterator-ctor` (procedure):

>   `ly:partial-iterator::constructor`

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

> `name` (symbol):

>   `'PartialSet`

>   Name of this music object.

> `types` (list):

>   `'(general-music partial-set)`

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

#### Internals Reference