### 1.1.11 BeamEvent

Start or stop a beam.

Syntax for manual control: `c8-[ c c-] c8`

Event classes: beam-event, music-event, span-event and StreamEvent.

Accepted by: Beam_engraver, Beam_performer and Grace_beam_engraver.

Properties:

> `name` (symbol):

>   `'BeamEvent`

>   Name of this music object.

> `types` (list):

>   `'(general-music post-event event beam-event span-event)`

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

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