Convert OPML to MD

OPML, or Outline Processor Markup Language, is a file format utilized primarily for outlining data structures. Initially developed in 2000 by UserLand Software, OPML was designed to facilitate the exchange of outline-based information between different software applications. Its uses have expanded over time, notably in organizing RSS feed lists and managing hierarchical data. The OPML file extension denotes XML-based documents that offer simplicity and interoperability in transferring structured information across diverse platforms. In essence, OPML serves as a versatile tool in the realm of data organization and syndication.

The MD file extension stands for "Markdown Documentation", a lightweight markup language used primarily for creating formatted text using a plain-text editor. Originally created by John Gruber in 2004, Markdown aims to be an easy-to-read and easy-to-write syntax for web content creation. Its primary use is in documentation files, readme files, and other technical documents where both simplicity and readability are paramount. The MD extension facilitates smooth conversion into HTML and other formats, making it an essential tool for developers and technical writers.