LilyPond Internals Reference: 1.1.100 SustainEvent

### 1.1.100 `SustainEvent`

Depress or release sustain pedal.

Event classes: `music-event`, `pedal-event`, `span-event`, `StreamEvent` and `sustain-event`.

Accepted by: `Piano_pedal_engraver` and `Piano_pedal_performer`.

Properties:

`name` (symbol):

  `'SustainEvent`

  Name of this music object.

`types` (list):

      '(post-event event pedal-event sustain-event)

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

#### LilyPond – Internals Reference v2.24.4 (stable-branch).