reStructuredText (RST or reST) is a plain text markup syntax, similar to Markdown, that is widely used in the Python ecosystem for documentation. It's designed to be both human-readable and easily processed by computer programs. RST documents are typically used to create technical documentation, software manuals, and online help systems. The syntax allows for structuring text with headings, lists, tables, code blocks, and cross-references. A key feature of reStructuredText is its extensibility through directives and roles, which allow for adding custom functionality and semantic meaning to the text. These directives and roles are often used to embed images, videos, or other multimedia content, as well as to create complex layouts and interactive elements. RST files are commonly processed using the Sphinx documentation generator to produce HTML, PDF, and other output formats. Sphinx leverages the power of RST to create comprehensive and well-structured documentation for Python projects and beyond. The format is designed to be easily converted to other formats, making it a versatile choice for creating documentation that can be accessed on various platforms and devices.