Sticky-note

Define symbol characteristics. SYMBOL1 specifies a font and text string to label the lowest-level contour lines. COLOR= ensures that each SYMBOL definition is used only once. In SYMBOL2, STEP= increases the number of contour labels by placing the labels closer together than the default distance of 65 percent.

symbol1 height=2.5
        font=swissb
        value='lowest'
        color=red;
symbol2 height=2.5
        step=25pct
        color=black;
symbol3 height=2.5
        color=blue;
symbol4 height=2.5
        color=green;