Markdown Documentation (.mkdn)
An MKDN (Markdown Documentation) file extension is utilized primarily for creating structured text documents using Markdown language, which is a lightweight markup language. This language simplifies the process of formatting text, converting it into HTML, and enhancing readability with plain text formatting syntaxes. MKDN files are highly favored for documentation in software development, due to their ability to seamlessly integrate with various tools and platforms, providing an efficient way to maintain and share documentation.