Controls an additional constraint to filter on the names returned by the Autocomplete Service. The constraint selects on the documents that provide names, not on the names itself.
Sets additional constraints to be used by the Autocomplete Service to filter on documents.
The constraint value will be concatenated with "AND".
The following constraint would make the names of documents only visible, if they are published.
$<Iteration>~(Released, Production, Deprecated) OR $<Doctype>~(event,todo)
