reStructuredText

Also known as rST, ReST, reST, .rst

reStructuredText (RST, ReST, or reST) is a plain-text markup language primarily used for technical documentation and other textual data. It serves a similar role as Markdown but includes additional semantic features for more complex document structuring. Prominent, large-scale, open-source projects that rely on reStructuredText include the Python programming language community for its official documentation, the Linux kernel docs, CMake, and the LLVM compiler project.