tools for spell checking in GNU R

 Spell checking common document formats including latex, markdown, manual
 pages, and description files. Includes utilities to automate checking of
 documentation and vignettes as a unit test during 'R CMD check'. Both
 British and American English are supported out of the box and other
 languages can be added. In addition, packages may define a 'wordlist' to
 allow custom terminology without having to abuse punctuation.