+/* Look up MSGID in the DOMAINNAME message catalog for the current CATEGORY locale. */
+char *dcgettext (const char *__domainname, const char *__msgid, int __category);
+
+/* Similar to `gettext' but select the plural form corresponding to the number N. */
+char *ngettext (const char *__msgid1, const char *__msgid2, unsigned long int __n);
+
+/* Similar to `dgettext' but select the plural form corresponding to the number N. */
+char *dngettext (const char *__domainname, const char *__msgid1, const char *__msgid2, unsigned long int __n);
+
+/* Similar to `dcgettext' but select the plural form corresponding to the number N. */
+char *dcngettext (const char *__domainname, const char *__msgid1, const char *__msgid2, unsigned long int __n, int __category);
+
+/* Set the current default message catalog to DOMAINNAME. If DOMAINNAME is null, return the current default. If DOMAINNAME is "", reset to the default of "messages". */
+char *textdomain (const char *__domainname);
+
+/* Specify that the DOMAINNAME message catalog will be found in DIRNAME rather than in the system locale data base. */