cascade is a third party function used in FSDA demos and examples
cascade()
examplefunction cascade cascades existing figures so that they don't directly overlap cascade takes and returns no arguments. This function will cascade as many figures as will fit the height/width of the screen. If there are more figures than can cascade in a screen, those additional figures are left in their original position.
cascade()
Cascade multiple figures.
Tufte E.R. (1983), "The visual display of quantitative information", Graphics Press, Cheshire.