---
title: didChangeAutomaticPeriodSubstitution
framework: foundation
role: symbol
role_heading: Type Property
path: foundation/notificationcenter/messageidentifier/didchangeautomaticperiodsubstitution
---

# didChangeAutomaticPeriodSubstitution

## Declaration

```swift
static var didChangeAutomaticPeriodSubstitution: NotificationCenter.BaseMessageIdentifier<NSSpellChecker.DidChangeAutomaticPeriodSubstitutionMessage> { get }
```