Documentation is essential for any R package to be used over time. The followin R-packages, I developed, still need a website documentation,which can be easily developed with teh pkgdown R script.

Currently, my packages are described using a markdown README file, see:

- QuantumPPMS package

- X-ray Rigaku package

- Atomic force microscopy image analysis package

Yihui Xie wrote an extensive book on markdown language in R, it is called R Markdown: The Definitive Guide. Conversion to Powerpoint files is also useful.