The MDL User Guide and Reference Manual are now available online: https://modeldefinitionlanguage.github.io/MDLUserGuide/.
There is a toolbar at the top of the manual that allows you to see the section browser, search within the manual, change text attributes while reading, edit a page (via Github) and download the manual as PDF or ePub (coming soon!).
The User Guide will be maintained and updated on Github at https://github.com/ModelDefinitionLanguage/MDLUserGuide. We encourage the community to contribute to and update the manual either by editing .Rmd files directly on Github or by making a copy of the repository, making changes and submitting a pull request, according to the Github workflow.
The User Guide is compiled using RStudio’s bookdown package. Yihui Xie has provided a comprehensive guide to bookdown. By downloading bookdown and dependent packages, it is possible for anybody to recompile the manual using R.