Guideline summary

Reliable information perception

To prevent confusion of information items, a separate display segment should be allocated to each item. If possible, it should not be shared with other items.

Facilitating information recognition

If the display is limited in size, so that a common display unit should be shared, to display various items ( Display sharing ), then specific means should be designed to enable the operators to recognize the item being displayed .

Situation indication

Context-sensitive screens used in routine operation should provide special salient indication about context variables with exceptional values.

Guidelines

Apply visual cues to enable quick recognition of exceptional values. On each screen, show all information that may affect the behavior of any control on screen
Do not present irrelevant information that may take too long to read
When applicable, show the users all parameters that may affect the way the system would respond to control activation
When there are too many parameters to display, show first those that deviate from the default data
Track the parameter changes and show the history of the changes of the relevant parameters
Enable the users to explicitly hide the setup parameters.