+/** \brief creates sort handle
+ \param bfs block files handle
+ \param write_flag (0=read-only, 1=write and read)
+ \param sort_type one of ZEBRA_SORT_TYPE_..
+ \return sort index handle
+*/
+zebra_sort_index_t zebra_sort_open(BFiles bfs, int write_flag, int sort_type);
+
+/** \brief frees sort handle
+*/
+void zebra_sort_close(zebra_sort_index_t si);
+
+/** \brief sets type for sort usage
+ \param si sort index handle
+ \param type opaque type .. A sort file for each type is created
+*/
+int zebra_sort_type(zebra_sort_index_t si, int type);
+
+/** \brief sets sort system number for read / add / delete
+ \param si sort index handle
+ \param sysno system number
+*/
+void zebra_sort_sysno(zebra_sort_index_t si, zint sysno);
+
+/** \brief adds multi-map content to sort file
+ \param si sort index handle
+ \param section_id section of key
+ \param w one or more 0-terminted strings (thus an array)
+
+ zebra_sort_type and zebra_sort_sysno must be called prior to this
+*/
+void zebra_sort_add(zebra_sort_index_t si, zint section_id, WRBUF w);
+
+
+/** \brief delete sort entry
+ \param si sort index handle
+ \param section_id section of sort key to be deleted
+
+ zebra_sort_type and zebra_sort_sysno must be called prior to this
+*/
+void zebra_sort_delete(zebra_sort_index_t si, zint section_id);
+
+/** \brief reads sort entry
+ \param si sort index handle
+ \param section_id output section ID (may be NULL and it will not be set)
+ \param w resulting buffer
+ \retval 0 could not be read
+ \retval 1 could be read (found)
+*/
+int zebra_sort_read(zebra_sort_index_t si, zint *section_id, WRBUF w);
+
+YAZ_END_CDECL