bindtextdomain
(void) bindtextdomain(TZ_DOMAIN, TZ_DOMAINDIR);
bindtextdomain(TZ_DOMAIN, TZ_DOMAINDIR);
if (!bindtextdomain(domainname, _PATH_TEXTDOMAIN))
char *bindtextdomain(const char *, const char *);
bindtextdomain("test", "."); /* ./LANG/LC_MESSAGES/test.mo */
bindtextdomain(msgdomain, msgdomaindir);