Convert CWK to MDWN

The CWK file extension stands for ClarisWorks Document, specifically used for word processing documents within ClarisWorks (later AppleWorks). Apple rebranded ClarisWorks to AppleWorks after acquiring Claris in 1998 and discontinued it in 2004. These CWK files have since been largely replaced by formats like PAGES in Apple's iWork suite. Opening CWK word processing files now requires older versions of Apple's Pages.

The MDWN file extension stands for Markdown Document and is associated with the Markdown Markup Language, created by John Gruber. It is used for writing and formatting plain text documents. MDWN files are compatible with various text editors like Markdown, Visual Studio Code, and Atom, and are widely used for documentation, note-taking, and content creation on platforms such as GitHub. The simplicity and readability of Markdown make it popular among developers and technical writers.