This document is developed using a modified version of ReSpec which handles Markdown syntax. The only thing you need to get start is a browser and a text editor. Make your changes to the index.html file and drag it into a browser, ReSpec will compile it into a properly formatted doc on the fly.
Please do not commit directly to the main repository even if you have commit rights.
Instead, please fork the repository to your own GitHub account and commit your changes there. It's best to create a new branch per feature. Please send well scoped pull requests to the main repository.
Please note that the main branch is gh-pages, as this allows automatically publishing the document on GitHub pages as described in Using GitHub for Spec Work.