# 02 00 5a 57 52 54 00 00 00 00 00 00 00 00 00 00 — File format magic numbers

For 02 00 5a 57 52 54 00 00 00 00 00 00 00 00 00 00, offset is 0; extension is cwk; format is Claris Works word processing doc, verified against its source on 2026-08-03.

- **Hex signature:** 02 00 5a 57 52 54 00 00 00 00 00 00 00 00 00 00
- **Offset:** 0
- **Extension:** cwk
- **Format:** Claris Works word processing doc

## What the source says

> 02 00 5a 57 52 54 00 00 00 00 00 00 00 00 00 00 | ␂␀ZWRT␀␀␀␀␀␀␀␀␀␀ | 0 | cwk | Claris Works word processing doc

## Source

- https://en.wikipedia.org/wiki/List_of_file_signatures

Last verified: 2026-08-03. Review by: 2027-08-03.
Part of [File format magic numbers](https://referencesource.org/file-format-signatures/).