The attribute filter lets you define values for the object identifier, gml:name and citydb:lineage, which must be matched by a top-level feature to be exported.
More than one identifier can be provided in a comma-separated list. Multiple gml:name and citydb:lineage values are not supported though.
Both the gml:name and citydb:lineage search strings support two wildcard characters: "" representing zero or more characters and "." representing a single character. You can use the escape character "\" to escape the wildcards. For example, if you provide ``abcfor the gml:name filter, then features with a gml:name of "xyzabc" and "abc" will both be exported. If you enter*abc`` instead, the gml:name must exactly match "*abc" for the feature to be exported.