exportPattern("^[[:alpha:]]+")
import("fPortfolio","tcltk","tcltk2")
importFrom("grDevices", "dev.new","colorRampPalette")
importFrom("graphics", "abline", "legend","lines","par","plot", "plot.new", "grid", "rug", "text")
importFrom("utils", "data", "download.file","head","read.csv", "read.delim","tail", "write.csv")
importFrom("stats", "as.formula","coef", "cor", "cov","lm", "na.omit","quantile","residuals","sd","time","var", "as.ts", "embed")
export("JFE")

