plott(x, y = c(1:length(x)), add = FALSE, pch = 19, xlab = "", col = 1, main = NULL, ty = "b", return.to.default = TRUE, ...)add = TRUE the series is added to existing active device. The active device graphical
parameters must match, meaning it must be created using return.to.default=F.par.plot.default.plot.default.par.plot.default.return.to.default=TRUE.par, plot.default