---
title: refinement
framework: corelocation
role: symbol
role_heading: Instance Property
path: corelocation/clmonitor-2r51v/event/refinement
---

# refinement

An optional instance of a condition that represents the most specific condition that this event can apply to.

## Declaration

```swift
let refinement: (any CLCondition)?
```

## See Also

### Event characteristics

- [date](corelocation/clmonitor-2r51v/event/date.md)
- [identifier](corelocation/clmonitor-2r51v/event/identifier.md)
- [state](corelocation/clmonitor-2r51v/event/state-swift.property.md)