+struct date_value gedcom_parse_date(const char* line_value);
+char* gedcom_date_to_string(struct date_value* val);
+struct date_value* gedcom_new_date_value(struct date_value* copy_from);
+int gedcom_normalize_date(Date_input compute_from, struct date_value *val);
+
+struct age_value gedcom_parse_age(const char* line_value);
+struct age_value* gedcom_new_age_value(struct age_value* copy_from);
+char* gedcom_age_to_string(struct age_value* val);
+
+/* Handling cross-references */
+struct xref_value *gedcom_get_by_xref(const char *key);
+struct xref_value *gedcom_add_xref(Xref_type type, const char* xrefstr,
+ Gedcom_ctxt object);
+struct xref_value *gedcom_link_xref(Xref_type type, const char* xrefstr);
+struct xref_value *gedcom_unlink_xref(Xref_type type, const char* xrefstr);
+int gedcom_delete_xref(const char* xrefstr);
+
+/* Writing support */
+Gedcom_write_hndl gedcom_write_open(const char* filename);
+int gedcom_write_close(Gedcom_write_hndl hndl, int *total_conv_fails);
+int gedcom_write_set_encoding(Enc_from from,
+ const char* charset, Encoding width,
+ Enc_bom bom);
+int gedcom_write_set_line_terminator(Enc_from from, Enc_line_end end);
+
+int gedcom_write_record_str(Gedcom_write_hndl hndl,
+ Gedcom_rec rec, char* xrefstr, char* val);
+
+int gedcom_write_element_str(Gedcom_write_hndl hndl, Gedcom_elt elt,
+ int parsed_tag, int parent_rec_or_elt,
+ char* val);
+int gedcom_write_element_xref(Gedcom_write_hndl hndl, Gedcom_elt elt,
+ int parsed_tag, int parent_rec_or_elt,
+ struct xref_value* val);
+
+int gedcom_write_element_date(Gedcom_write_hndl hndl,
+ Gedcom_elt elt, int tag, int parent_rec_or_elt,
+ struct date_value* val);
+int gedcom_write_element_age(Gedcom_write_hndl hndl,
+ Gedcom_elt elt, int tag, int parent_rec_or_elt,
+ struct age_value* val);
+
+int gedcom_write_user_str(Gedcom_write_hndl hndl, int level, char* tag,
+ char* xrefstr, char* value);
+int gedcom_write_user_xref(Gedcom_write_hndl hndl, int level, char* tag,
+ char* xrefstr, struct xref_value* val);