exportPattern("^[[:alpha:]]+")
import(mclust)
import(TeachingDemos)
import(DescTools)
import(utils)
import(stats)
importFrom("grDevices", "dev.off", "pdf")
importFrom("graphics", "abline", "arrows", "axis", "legend", "mtext",
           "par", "plot", "points", "segments", "text")