Nicole, after we spoke, I was having trouble using the pandoc wrapper within the knitr() package in R Studio – R Studio wasn’t seeing that pandoc was installed. Normally, that’s not a problem, since I usually use pandoc from the bash shell. But in this case, it annoyed me. So just in case you ever do start using R Studio, here’s the answer, at least for Unix-y systems like Linux and OSX: In a terminal, do echo PATH=$PATH ~/.