+#if YAZ_HAVE_XML2
+/** \brief writes MARC record as libxml2 tree
+ \param mt handle
+ \param root_ptr pointer to record node
+ \param ns namespace of record (such as "http://www.loc.gov/MARC21/slim")
+ \param format MarcXchange format (NULL for none)
+ \param type MarcXchange format (NULL for none)
+ \retval 0 Creation successful and *root_ptr is "record" node
+ \retval -1 ERROR
+*/
+YAZ_EXPORT
+int yaz_marc_write_xml(yaz_marc_t mt, xmlNode **root_ptr,
+ const char *ns,
+ const char *format,
+ const char *type);
+#endif
+
+/** \brief sets leader spec (for modifying bytes in 24 byte leader)
+ \param mt handle
+ \param leader_spec
+ \retval 0 OK
+ \retval -1 ERROR
+
+ Spec takes form pos=val,pos=val,...
+ where value is either a number (decimal char value) or a
+ string in 'a', e.g. 9='a'
+
+*/
+YAZ_EXPORT int yaz_marc_leader_spec(yaz_marc_t mt, const char *leader_spec);
+
+
+/** \brief sets leader, validates it, and returns important values
+ \param mt handle
+ \param leader of the 24 byte leader to be set
+ \param indicator_length indicator length (returned value)
+ \param identifier_length identifier length (returned value)
+ \param base_address base address (returned value)
+ \param length_data_entry length of data entry (returned value)
+ \param length_starting length of starting
+ \param length_implementation length of implementation defined data
+*/
+YAZ_EXPORT
+void yaz_marc_set_leader(yaz_marc_t mt, const char *leader,
+ int *indicator_length,
+ int *identifier_length,
+ int *base_address,
+ int *length_data_entry,
+ int *length_starting,
+ int *length_implementation);
+
+
+/** \brief adds MARC comment string
+ \param mt handle
+ \param comment comment to be added)
+*/
+YAZ_EXPORT
+void yaz_marc_add_comment(yaz_marc_t mt, char *comment);
+
+/** \brief adds MARC annotation - printf interface
+ \param mt handle
+ \param fmt printf format string
+*/
+YAZ_EXPORT
+void yaz_marc_cprintf(yaz_marc_t mt, const char *fmt, ...);
+
+/** \brief adds subfield to MARC structure
+ \param mt handle
+ \param code_data code data buffer
+ \param code_data_len length of code data
+*/
+YAZ_EXPORT
+void yaz_marc_add_subfield(yaz_marc_t mt,
+ const char *code_data, size_t code_data_len);
+
+
+/** \brief adds controlfield to MARC structure
+ \param mt handle
+ \param tag (e.g. "001"
+ \param data value for this tag
+ \param data_len length of data
+*/
+YAZ_EXPORT
+void yaz_marc_add_controlfield(yaz_marc_t mt, const char *tag,
+ const char *data, size_t data_len);
+
+
+#if YAZ_HAVE_XML2
+/** \brief adds controlfield to MARC structure using xml Nodes
+ \param mt handle
+ \param ptr_tag value of tag (TEXT xmlNode)
+ \param ptr_data value of data (TEXT xmlNode)
+*/
+YAZ_EXPORT
+void yaz_marc_add_controlfield_xml(yaz_marc_t mt, const xmlNode *ptr_tag,
+ const xmlNode *ptr_data);
+
+/** \brief adds controlfield to MARC structure using xml Nodes for data
+ \param mt handle
+ \param tag string tag
+ \param ptr_data value of data (TEXT xmlNode)
+*/
+YAZ_EXPORT
+void yaz_marc_add_controlfield_xml2(yaz_marc_t mt, char *tag,
+ const xmlNode *ptr_data);
+#endif
+
+/** \brief adds datafield to MARC structure using strings
+ \param mt handle
+ \param tag value of tag as string
+ \param indicator indicator string
+ \param indicator_len length of indicator string
+*/
+YAZ_EXPORT
+void yaz_marc_add_datafield(yaz_marc_t mt, const char *tag,
+ const char *indicator, size_t indicator_len);
+
+#if YAZ_HAVE_XML2
+/** \brief adds datafield to MARC structure using xml Nodes
+ \param mt handle
+ \param ptr_tag value of tag (TEXT xmlNode)
+ \param indicator indicator string
+ \param indicator_len length of indicator string
+*/
+YAZ_EXPORT
+void yaz_marc_add_datafield_xml(yaz_marc_t mt, const xmlNode *ptr_tag,
+ const char *indicator, size_t indicator_len);
+
+/** \brief adds datafield to MARC structure using xml Nodes
+ \param mt handle
+ \param tag_value string value (pointer copied verbatim, not strdupped)
+ \param indicators indicator string ; pointer copied verbatim; not strdupped
+*/
+YAZ_EXPORT
+void yaz_marc_add_datafield_xml2(yaz_marc_t mt, char *tag_value,
+ char *indicators);
+
+#endif
+
+/** \brief returns memory for MARC handle
+ \param mt handle
+ \retval NMEM handle for MARC system
+*/
+YAZ_EXPORT
+NMEM yaz_marc_get_nmem(yaz_marc_t mt);
+
+/** \brief clears memory and MARC record
+ \param mt handle
+*/
+YAZ_EXPORT
+void yaz_marc_reset(yaz_marc_t mt);
+
+/** \brief gets debug level for MARC system
+ \param mt handle
+*/
+YAZ_EXPORT
+int yaz_marc_get_debug(yaz_marc_t mt);
+
+/** \brief Converts MARC format type to format type(YAZ_MARC_..)
+ \param arg string
+ \retval -1 unknown format (bad arg)
+ \retval >= 0 OK (one of YAZ_MARC - values)
+*/
+YAZ_EXPORT
+int yaz_marc_decode_formatstr(const char *arg);
+
+/** \brief Enables or disables writing of MARC XML records using Libxml2
+ \param mt handle
+ \param enable 0=disable, 1=enable
+*/
+YAZ_EXPORT
+void yaz_marc_write_using_libxml2(yaz_marc_t mt, int enable);
+
+/** \brief Performs "pretty" display of OPAC record to WRBUF using marc_t
+ \param mt handle
+ \param r OPAC record
+ \param wrbuf WRBUF for resulting display string
+
+ This function uses iconv_handle of yaz_marc_t for character set
+ conversion of both OPAC + ISO2709 part.
+ \*/
+YAZ_EXPORT void yaz_opac_decode_wrbuf(yaz_marc_t mt, Z_OPACRecord *r,
+ WRBUF wrbuf);
+
+/** \brief Performs "pretty" display of OPAC record to WRBUF using marc_t
+ \param mt handle
+ \param r OPAC record
+ \param wrbuf WRBUF for resulting display string
+ \param cd iconv handle for OPAC content (not ISO2709 part)
+
+ This function uses iconv handle of yaz_marc_t for character set
+ conversion of ISO2709 part and supplied handle (cd) for OPAC part.
+ \*/
+YAZ_EXPORT void yaz_opac_decode_wrbuf2(yaz_marc_t mt, Z_OPACRecord *r,
+ WRBUF wrbuf, yaz_iconv_t cd);
+
+/** \brief flushes records
+ \param mt handle
+ \param wr WRBUF for output
+ \retval 0 OK
+ \retval -1 ERROR
+*/
+YAZ_EXPORT int yaz_marc_write_trailer(yaz_marc_t mt, WRBUF wr);
+
+/** \brief enables record collection output
+ \param mt handle
+*/
+YAZ_EXPORT void yaz_marc_enable_collection(yaz_marc_t mt);
+