check.numeric           Check the vector's possibility to convert to
                        numeric
inspect.na              inspect matrix or data.frame regarding NAs
pin.na                  Pinpoint NAs in a vector, matrix or data.frame
rm.all.but              Remove all variables except those that you
                        mention
save.var                Save variables separate files
to.dummy                Convert categorical vector into dummy binary
                        dataframe
unfactor                Convert factor into appropriate class
var.info                Get a detailed list of variables
varhandle-package       A Package to Work and Handle Variables Easier,
                        Convenient and Flawless
