this option is checked but grayed out. After clicking "Page Layout" in the Workbook Views section, which converts the spreadsheet to a print display, the Ruler option is activated. Clicking the "Ruler" check box then toggles the top and left rulers on and off. ...
{pegboard} is not currently on CRAN, but it can be installed from ourCarpentries Universe(updated every hour) with the following commands: options(repos=c(carpentries="https://carpentries.r-universe.dev/",CRAN="https://cran.rstudio.com/")) install.packages("pegboard") ...