I remember a few weeks ago, there was a challenge in the R-help list to make the prime symbol in R graphics. In LaTeX, we simply write $X'$ or $X^\prime$. R has a rough support for math expressions (see demo(plotmath)) and they are certainly unsatisfactory for LaTeX users. In fact we can write native LaTeX

## formatR update (0.1-6)

A new version of the formatR package is available on CRAN now (binary packages are still on the way). There are three major updates: the inline comments will also be preserved in most cases (in earlier versions, only single lines of comments are preserved) tidy.source() gained a new argument 'text' to accept a character vector

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