# ReStructuredText Linter RST isn't the easiest of markup languages, but it's powerful and what `Sphinx` (the library used to build our docs) uses, so we're stuck with it. But at least we now have a linter which will catch basic problems in `.rst` files early. Be sure to run: ```shell mach lint -l rst ``` to test your outgoing changes before submitting to review. [More information](RSTLinter).