# `writeKeyString`

*Function*

## Declaration

```swift
func writeKeyString(_ file: UnsafeMutablePointer<FILE>, _ key: String)
```

```objc
void writeKeyString(FILE *file, NSString *key);
```

```python
writeKeyString(file: FILE, key: str)
```

## See Also

### Keys and Strings

- [`writeKey`](/Core/GlyphsCore/writeKey)
- [`sWriteKey`](/Core/GlyphsCore/sWriteKey)
- [`writeStringEscape`](/Core/GlyphsCore/writeStringEscape)
- [`sWriteStringEscape`](/Core/GlyphsCore/sWriteStringEscape)
- [`writeKeyValueString`](/Core/GlyphsCore/writeKeyValueString)
- [`writeKeyValueStringEscape`](/Core/GlyphsCore/writeKeyValueStringEscape)
- [`writeKeyValueStringSimple`](/Core/GlyphsCore/writeKeyValueStringSimple)