Operational controls should be accessible and easy to identify
and use. Controls should be identified and easy to operate.footnote
The equipment should be capable of being switched on and off
and operated from the master display position.
It should
be possible to vary the brilliance of the fixed range rings and the
variable range markers and electronic bearing lines and to remove
them independently and completely from the display.
For
radars with additional synthetic information (e.g. target identifiers,
vectors, navigational information) means should be provided capable
of removing this additional information from the screen.