- Records indexed with the <literal>alvis</literal> filter
- have similar means to discover the internal Zebra ID.
+ A new element set for retrieval of internal record
+ data has been added, which can be used to access minimal records
+ containing only the <literal>recordIdNumber</literal> &zebra;
+ internal ID, or the <literal>recordIdOpaque</literal> string
+ identifier. This works for any indexing filter used.
+ See <xref linkend="special-retrieval"/>.