A number of vector graphics
overlays may be available, and can be selected from the vector graphics
selection box that appears when you hit the 'coastline' button.
When you have selected
a vector dataset (one item) you must click the 'toggle' button on
the right side of the screen to draw the graphics. Graphics are
initially drawn using a predefined colour, but you can change the
colour of any graphics layer by selecting the graphics from the
vector graphics selection box, mixing the desired amount of red,
green and blue using the scroll bars and pressing the 'colorize'
For a further description
of the individual vector datafiles select the button belov