---
title: userAppend
framework: system
role: symbol
role_heading: Type Property
path: system/fileflags/userappend
---

# userAppend

Writes to the file may only append.

## Declaration

```swift
static var userAppend: FileFlags { get }
```

## Discussion

Discussion The corresponding C constant is UF_APPEND. note: This flag may be changed by the file owner or superuser.