Download complete issue Refereed articles may be downloaded individually using the links below. [Bibliography of refereed articles]

Table of Contents

Editorial	3
Contributed Research Articles
What’s in a Name? Paul Murrell	5
It’s Not What You Draw,It’s What You Don’t Draw Paul Murrell	13
Debugging grid Graphics Paul Murrell and Velvet Ly	19
frailtyHL: A Package for Fitting Frailty Models with H-likelihood Il Do Ha, Maengseok Noh and Youngjo Lee	28
influence.ME: Tools for Detecting Influential Data in Mixed Effects Models Rense Nieuwenhuis, Manfred te Grotenhuis, and Ben Pelzer	38
The crs Package: Nonparametric Regression Splines for Continuous and Categorical Predictors Zhenghua Nie and Jeffrey S Racine	48
Rfit: Rank-based Estimation for Linear Models John D. Kloke and Joseph W. McKean	57
Graphical Markov Models with Mixed Graphs in R Kayvan Sadeghi and Giovanni M. Marchetti	65
Programmer’s Niche
The State of Naming Conventions in R Rasmus Bååth	74
News and Notes
Changes in R	76
Changes on CRAN	80
News from the Bioconductor Project	101
R Foundation News	102