#define Z_External_itemOrder 10
#define Z_External_diag1 11
#define Z_External_espec1 12
+#define Z_External_summary 13
+#define Z_External_OPAC 14
union
{
/* Generic types */
Z_ItemOrder *itemOrder;
Z_DiagnosticFormat *diag1;
Z_Espec1 *espec1;
+ Z_BriefBib *summary;
} u;
};