C C Get the current elapsed time, in seconds. C C Turn on the positioning of labels by the penalty scheme and provide a C little more room for X and Y coordinates defining contour lines, so C as not to have labels right next to each other on a contour line. C C Turn off the drawing of high and low labels. C thicken it somewhat. C C Turn off the informational label.
C C Turn on line-label boxes.
Arrange for the areas between contour lines drawn to be C shaded. C C Compute and print statistics for the plot and label it. If any area identifier is negative, turn off drawing. If drawing is turned on, draw the polyline. C C Done.