Greetings: How can one put arrowheads on plot axes to show that they keep going? Can it be done using plot/axis or plot/options or do I have to actually draw and overlay an arrow on each axis? Any ideas? Thanks, Phil

Do any of you have any graphics software suggestions for adding lines, text, etc. in EPS plots generated by Maple? I have have mainly only used Photoshop for editing plots while working with LaTex, but I have increasely become dissatisfied with the results. Any suggestions? Thanks, Phil

#1 Typically, on plots, removable discontinuities are represented by a small cicle at the discontinuity. How can such an object (i.e. the circle) be generated, preferrably automatically, by Maple at these points. #2 Also, if, for example, the signum function is plotted (i.e. a step discontinuity at x=0). How is an open circle plotted at (0,-1) and a closed circle plotted at (0,1)? Thanks in advance.

#1 Typically, on plots, removable discontinuities are represented by a small cicle at the discontinuity. How can such an object (i.e. the circle) be generated, preferrably automatically, by Maple at these points. #2 Also, if, for example, the signum function is plotted (i.e. a step discontinuity at x=0). How is an open circle plotted at (0,-1) and a closed circle plotted at (0,1)? Thanks in advance.