From v8.8.0, the term 'Key Attributes' has been superseded by the term 'Displayed Attributes' as this better reflects their purpose.
All system attributes containing the string 'KeyAttributes' are now deprecated in favour of new system attributes using the term 'DisplayedAttributes'.
Thus, attribute $KeyAttributes has been renamed $DisplayedAttributes. Related changes include $DisplayedAttributesFont, $DisplayedAttributesFontSize, $DisplayedAttributesDateFormat, and $HideDisplayedAttributes.
Existing documents may continue to refer to $KeyAttributes and will continue to operate.