Definition: Returns people with the contents of their Employee ID field. The Employee ID field is an optional field, so this field can be blank.
Return value: Values of type String.
Source: The General tab of the Person.
Arguments: None.
Sorting: If this base rule is used for sorting in a List Target or a List, then people with a blank Employee ID field are pushed behind the other candidates in an ascending sort; otherwise, they are preferred (sorted to the top) if the sort is descending.