rst
What is a .rst file?
text/x-rst
reStructuredText (reST) is a plain-text markup language from the Python community, used heavily for software documentation and by the Sphinx documentation generator. It uses indentation and simple punctuation for structure — headings, directives, roles, and cross-references. The .rst extension is standard.
How to use a .rst file
Use an example .rst file to test reStructuredText parsers and editors, Sphinx or docutils rendering, and syntax highlighting.