1. Installation You can install formatR from CRAN, or yihui.r-universe.dev if you want to test the latest development version: install.packages("formatR", repos = "http://cran.rstudio.com") # or development version options(repos = c(yihui = "https://yihui.r-universe.dev", CRAN = "https://cloud.r-project.org")) install.packages("formatR") Or check out the Github repository and install from source i