+ * Renders a parser-tree into a BER-endoded packet representing an
+ * equivalent Z39.50 Type-1 query. If you don't know what that
+ * means, then you don't need this method :-) This is useful
+ * primarily for SRW-to-Z39.50 gateways.
+ *
+ * @param config
+ * A <TT>Properties</TT> object containing configuration
+ * information that specifies the mapping from CQL indexes,
+ * relations, etc. to Type-1 attributes. The mapping
+ * specification is described in the CQL-Java distribution's
+ * sample PQF-mapping configuration file,
+ * <TT>etc/pqf.properties</TT>, which see.
+ * @return
+ * A byte array containing the BER packet.
+ * @see
+ * <A href="ftp://ftp.rsasecurity.com/pub/pkcs/ascii/layman.asc"
+ * >ftp://ftp.rsasecurity.com/pub/pkcs/ascii/layman.asc</A>