R\u00a0is a language and environment for statistical computing and graphics. It is a GNU project which is similar to the S language and environment which was developed at Bell Laboratories (formerly AT&T, now Lucent Technologies) by John Chambers and colleagues. R can be considered as a different implementation of S. There are some important differences, but much code written for S runs unaltered under R. \u00a0R provides a wide variety of statistical (linear and nonlinear modelling, classical statistical tests, time-series analysis, classification, clustering, \u2026) and graphical techniques, and is highly extensible. The S language is often the vehicle of choice for research in statistical methodology, and R provides an Open Source route to participation in that activity. One of R\u2019s strengths is the ease with which well-designed publication-quality plots can be produced, including mathematical symbols and formulae where needed. Great care has been taken over the defaults for the minor design choices in graphics, but the user retains full control. This format is accepted in DANS with no further conversions required in its executable code format (.R) and its workspace files (.RData). We strongly suggest to build up your code as neatly as possible, include comments where necessary, and make use of good programming practices. The code should be clear enough for users to understand the results and for possible reproduction of the study and methods.<\/p>\n