One of the allowed arguments following FORMAT in the DISPLAY command; elements not designated as keys can be displayed in a separate section of the symbol.
Example
Definition "Entity" { PROPERTY "Description"
{ EDIT COMPLETE LISTOF "Attribute" FROM "Data Element"
KEYED BY {Model, "Entity Name":"Name", "Name"} RELATE BY
ZOOMABLE DISPLAY { FORMAT KEY LEGEND "Primary Key" }
DISPLAY { FORMAT NONKEY LEGEND "Non-Key Attributes" }
...}
In the example above, the FORMAT NONKEY command places all attributes not designated as primary keys under the "Non-Key Attributes" legend on an entity symbol.