reStructuredText is an easy to read, what-you-see-is-what-you-get plainttext markup syntax and parser system. In other words reStructuredText is a lightweight markup language that is used in static
site generators like Sphinx. It contains robust tools for semantic markup, reusing content, and content filters for different kinds of outputs.
It’s also easily extendible using custom directives that you can create yourself, allowing you to satisfy a wide variety of documentation needs.
reStructuredText is useful for creating simple web pages, and for standalone documents.
