LEXICON Command Reference Manual

AUTCRE	If set to TRUE the bound element is automatically created if it doesn't exist at a modification operation.
CARD	This is the number of attribute elements allowed to be bound to the Binding Element (Note, only the Max Cardinality is currently effective).
DEFHOM	Identifies the default home selector for the bound element types defined in this definition. The DEFHOM defines the location where the distributed attributes are created and managed.
ELEL	Defines the element types that represents the bound attribute types. This is the element types containing the attributes to add to the types listed in the DSXOWN