Convert TEXT MARKDOWNSTRICT to TEXINFO

The TEXT file extension, associated with Unextended Markdown Documentation, is used for plain text files that contain Markdown-formatted text. Markdown is a lightweight markup language designed to be easily readable and writable, enabling users to format text using simple syntax. These files are widely used for documentation, notes, and content creation due to their simplicity and portability across different platforms and applications.

The Texinfo is a documentation format developed by the GNU Project, created by Richard Stallman and Bob Chassell. It uses plain text files with @-commands to generate both online and printed documentation from a single source. Texinfo files, with the TEXI extension, support various output formats like HTML, PDF, and Info. This system simplifies maintaining consistent documentation across multiple formats.