Starting with version 0.2, in order to reduce package space and check time, pre-built vignettes are not included in the package.
This function was added to compile the vignettes on demand and view them in a browser.
The available vignettes are listed here:
Cell culture -- hypoxia, secreted, osmotic_bact, osmotic_euk, osmotic_halo, glucose, 3D
Cancer -- breast, colorectal, liver, lung, pancreatic, prostate
Note that pandoc (including pandoc-citeproc), as a system dependency of rmarkdown, must be available.
See rmarkdown's pandoc vignette (https://CRAN.R-project.org/package=rmarkdown/vignettes/pandoc.html) for installation tips.