The MDL User Guide and Reference Manual are now available online:

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 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.