Convert MKD to 4 (Man Page)

The MKD file extension stands for Markdown Documentation and is used primarily for creating formatted text using plain text. Originating in 2004 by John Gruber, Markdown offers a simple way to write documentation that is easy to read in plain text and can be converted to HTML for web presentation. Its simplicity and readability have made it a popular choice for software documentation, technical writing, and even blogging. The MKD extension supports various formatting options, including headings, lists, links, and code blocks, making them versatile tools in the IT industry.

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.