5.32.1 It should be possible for the user to manually
create and change, save, load and display simple maps/navigation lines/routes
referenced to own ship or a geographical position. It should be possible
to remove the display of this data by a simple operator action.
5.32.2 The maps/navigation lines/routes may consist
of lines, symbols and reference points.
5.32.3 The appearance of lines, colours and symbols
are as defined in SN/Circ.243.
5.32.4 The maps/navigation lines/route graphics
should not significantly degrade the radar information.
5.32.5 The maps/navigation lines/routes should
be retained when the equipment is switched OFF.
5.32.6 The maps/navigation lines/route data should
be transferable whenever a relevant equipment module is replaced.