Picking this option brings up the following information panel:
Opposite "Filename" is shown the name of the input NODE format file. In order to change the color in use for displaying interior nodes, for instance, Pick the color bar opposite Interior: (represented here by | color | ) and keep clicking the mouse button until the desired color appears. The secondary color index sets a value for the node indices beyond which nodes are displayed in the secondary color. Any nodes affected by editing are shown in the "modify" color until the next screen refresh. To change symbols, Pick the current symbol and click the mouse until the required symbol is displayed. When the required configuration has been set up, Pick ACCEPT. The markers referred to here are those created with edit operations.