  This R package evaluates main and pair-wise interaction effect of single
nucleotide polymorphisms (SNPs) via the W-test, scalable to whole genome-wide
data sets. The package provides fast and accurate p-value estimation of genetic
markers, as well as diagnostic checking on the probability distributions. It
allows flexible stage-wise or exhaustive association testing in a user-friendly
interface. Availability: The package is available in CRAN, or from website:
http://www2.ccrb.cuhk.edu.hk/wtest
