5.4.1 Information should be presented clearly
and intelligibly according to its functional significance and association.
Screen contents should be logically structured and their representation
should be restricted to the data which is directly relevant for the
user.
5.4.2 When using general purpose graphical user
interfaces, only the functions necessary for the respective process
should be available.
5.4.3 Alarms should be visually and audibly presented
with priority over other information in every operating mode of the
system; they should be clearly distinguishable from other information.
5.4.4 All display and control functions in control
stations operated by the same operators should adopt a consistent
user interface. Particular attention should be paid to:
- symbols;
- colours;
- controls;
- information priorities;
- layout.