

LOGBASE=2,
                                    the tick marks might be at 1, 2, 4, 8, 16. See Graph Axes with LOGEXPAND.
                                 LOGBASE=10,
                                    the tick marks might be at 1, 10, 100, 1000, but the tick values would
                                    read 0, 1, 2, 3. See An Axis with LOGEXPONENT.
                                 LOGBASE=10,
                                    then the tick marks might be at 10, 40, 200, 400, 600, 800, 1000,
                                    1200. See An Axis with LINEAR.
                                 VALUES= (0 50 100) places
                                    tick marks at 0, 50, and 100.
                                 VALUES= (0
                                       to 100 by 50) creates tick marks at 0, 50, and 100.
                                 VALUES= ("25MAY08"d "04JUL08"d "23AUG08"d) places
                                    tick marks at 25MAY08, 04JUL08, and 23AUG08.
                                 VALUES= ("01JAN08"d
                                       to "01MAY08"d by month) creates tick marks at 01JAN08,
                                    01FEB08, 01MAR08, 01APR08, and 01MAY08.
                                 If your VALUES= option creates more than 1000 values, then the option has no effect.