R: Vignettes and other documentation

# Vignettes and other documentation

## Vignettes from package 'roxygen2'

roxygen2::extending |  | Extending roxygen2 | HTML | source | R code
roxygen2::namespace |  | NAMESPACE tags | HTML | source | R code
roxygen2::rd-formatting |  | Rd formatting | HTML | source | R code
roxygen2::rd |  | Rd (documentation) tags | HTML | source | R code
roxygen2::roxygen2 |  | Getting started with roxygen2 | HTML | source | R code