The project lives in GitHub, a platform widely used for collaboration to projects using Git: https://github.com/ITDP/the-online-brt-planning-guide. You can ask questions or report problems in the guide by opening an issue.
If instead you want to propose changes to either the guide (e.g. a typo fix or a new section) or, if you’re a programmer or a designer, to the generator tool, please (fork the repository and) open a pull request.
This [work in progress] chapter goes into more detail on how each tool works, including a definition of the sytanx for .manu files.
More documentation on how to work with the guide and with GitHub will gradually become available. In the mean time, if you need help, do not hesitate to contact the geeks behind the curtain at contato@protocubo.io.