Convert MARKDOWN to PNM

Markdown is a lightweight markup language with a plain text formatting syntax, primarily used in Markdown documentation files with the MD extension. Created by John Gruber and Aaron Swartz in 2004, it allows IT professionals to easily format text for web pages, readme files, and technical documentation. Markdown's simplicity and readability make it ideal for collaborative projects and version control systems. Its syntax is designed to be readable without compromising the document's formatting when rendered as HTML or other web formats.

The PNM (Portable Anymap) file extension, developed by Jef Poskanzer in the 1980s, stands for Portable Any Map. It is an uncompressed raster graphics format designed for portable image storage and exchange, encompassing three sub-formats: PBM (Portable Bitmap), PGM (Portable Graymap), and PPM (Portable Pixmap). PNM files store image data in plain text or binary format, ensuring easy usage across different platforms and applications. This format is widely supported by various image editing software and is valued for its simplicity and lossless compression.