This is the mod_auth_mellon User Guide. It is written in AsciiDoc which is a popular plaintext markup language much like markdown or reStructuredText. You can find extensive documentation on AsciiDoc and AsciiDoctor on the web. AsciiDoc can be rendered into a variety of formats, but one of it's great advantages is the ability to produece DocBook. There are many ways to render AsciiDoc, but the simplest to produce html is this: % asciidoctor -a data-uri mellon_user_guide.adoc Note: the "-a data-uri" causes the images to be inlined in the HTML output so that everything is contained in one HTML file. If you want to edit the source it can be very useful to be able to see the rendered version as you work. This link is a guide on how to do that. Included in this directory is a Guardfile which can be used in conjuction with the live preview discussed in the link. http://asciidoctor.org/docs/editing-asciidoc-with-live-preview/