This plugin is no longer necessary for most users because similar functionality has been integrated into b2evolution's core.
For more information, please see: Markdown Plugin
A renderer that allows users to format text using Markdown syntax. From the Markdown website: "Markdown is a text-to-HTML conversion tool for web writers. Markdown allows you to write using an easy-to-read, easy-to-write plain text format, then convert it to structurally valid XHTML (or HTML)."