# `GSLayer startUpdates`

*Instance Method*

Processes deferred updates and sends combined change notifications.

## Declaration

```swift
func startUpdates()
```

```objc
- (void) startUpdates;
```

```python
startUpdates()
```

## Discussion

Call this after [`GSLayer stopUpdates`](/Core/GlyphsCore/GSLayer/stopUpdates) when changes made while updates were disabled must be reported.

## See Also

### Update Control

- [`GSLayer.disableUpdates`](/Core/GlyphsCore/GSLayer/disableUpdates) — Whether updates and change notifications are deferred.
- [`GSLayer ignoreUpdates`](/Core/GlyphsCore/GSLayer/ignoreUpdates) — Suppresses update tracking for current and subsequent changes.
- [`GSLayer isIgnoringUpdates`](/Core/GlyphsCore/GSLayer/isIgnoringUpdates) — Whether update tracking is suppressed.
- [`GSLayer stopUpdates`](/Core/GlyphsCore/GSLayer/stopUpdates) — Defers updates and change notifications.
- [`GSLayer enableFutureUpdates`](/Core/GlyphsCore/GSLayer/enableFutureUpdates) — Resumes updates without reporting changes made while updates were disabled or ignored.