exportPattern("^[[:alpha:]]+")
importFrom("png", "readPNG")
importFrom("jsonlite", "toJSON", "fromJSON")
importFrom("XML", "xmlParse", "xmlChildren", "xmlValue", "xpathApply", 
                  "xmlAttrs", "xmlToList", "htmlTreeParse", "NOCDATA")
importFrom("graphics", "axis", "par", "pie", "plot", "rasterImage")
importFrom("utils", "download.file")

S3method(print, clstats)
S3method(print, clcolor)
S3method(print, clcolors)
S3method(print, cllover)
S3method(print, cllovers)
S3method(print, clpalette)
S3method(print, clpalettes)
S3method(print, clpattern)
S3method(print, clpatterns)

S3method(plot, clcolor)
S3method(plot, clcolors)
S3method(plot, clpalette)
S3method(plot, clpalettes)
S3method(plot, clpattern)
S3method(plot, clpatterns)
