Convert TXT COMMONMARK to PPM

The TXT file extension is associated with CommonMark Markdown Language, a simplified markup language designed for easy readability and writability. Markdown is widely used in documentation, blogging, and formatting readme files in software development. Introduced in 2014, CommonMark aims to standardize Markdown's diverse implementations. Its clarity and simplicity make it a preferred choice for developers and technical writers seeking to maintain clean, structured documents.

The Portable Pixmap (PPM) file extension, an image format within the Netpbm family, stores simple, uncompressed images. Introduced in the late 1980s, PPM supports RGB color and grayscale images, making it suitable for basic image processing and conversion tasks. Its plain text encoding simplifies debugging and data manipulation, although its lack of compression results in larger file sizes compared to modern formats. As such, PPM finds limited use in contemporary applications, mainly in educational and experimental settings where ease of implementation and readability are prioritized.