These values are used to detect characteristics that are determinants of object shape. [0216] When the routine reaches the end of the stroke, it goes to Finish, and an Analyse Stroke routine, shown in FIG. 6C. This routine calculates a minimum size bounding rectangle for a stroke (shown for example in FIGS. 18 and 19), and also calculates factors such as stroke length, the end-to-end angle, the st