exportPattern("^[[:alpha:]]+")

importFrom("graphics", "abline", "arrows", "axis", "barplot",
           "contour", "grid", "hist", "layout", "legend", "lines",
           "matplot", "mtext", "par", "plot", "points", "polygon",
           "text", "title")
importFrom("stats", "dnorm", "dweibull", "ecdf", "lm", "plot.ts",
           "pweibull", "rnorm", "ts")
importFrom("utils", "head", "read.csv", "read.table", "tail",
           "write.table")

