5.2.1 The presentation of alphanumeric data, text,
symbols and other graphical information (e.g. radar image) should
support readability from typical user positions under all ambient
light conditions likely to be experienced on the bridge of a ship,
and with due consideration to the night vision of the officer of the
watch.
5.2.2 Alphanumeric data and text should be presented
using a clearly legible non-italic, sans-serif font. The font size
should be appropriate for the viewing distance from user positions
likely to be experienced on the bridge of a ship.
5.2.3 Text should be presented using simple unambiguous
language that is easy to understand. Navigation terms and abbreviations
should be presented using the nomenclature defined in SN/Circ.243.
5.2.4 When icons are used, their purpose should
be intuitively recognized by appearance, placement and grouping.