Convert TXT COMMONMARKX to 4 (Man Page)

The TXT file extension, which represents CommonMark Markdown Language with Extensions is a standardized, plain-text formatting syntax designed to be converted to HTML. CommonMark aims to improve the readability and portability of text, and it is widely used in documentation, forums, and note-taking applications. Extensions enhance its functionality, such as adding support for annotations, form inputs, and other features.

The 4 file extension refers to Unix Section 4 Manual Pages, which document special files and device drivers. These files, such as "mouse.4", describe how devices interact with the Unix operating system and are accessed using the "man" utility. Historically, these manual pages have been a fundamental part of Unix documentation, helping users understand and manage system devices.