The arrow diagram approacn (to which we now turn) emphasizes the process or cyclical steps involved in arriving at ... The word aquot;elementsaquot; is used (rather than aquot; stepsaquot;) because steps imply a routinized sequence. ... b.w.more on sos graphing2.doc p. pp. arrow diagram. ppt Send me the PSO journals, 30 SOS Graphing.