Figure 3


Code for an NCSA map file.

poly http://mycompass.com/north.html 0,0     125,0   62,62
poly http://mycompass.com/east.html  125,0   125,125 62,62
poly http://mycompass.com/south.html 125,125 0,125   62,62
poly http://mycompass.com/west.html  0,0     0,125   62,62