rem: "The requested URL requires a " "valid username and password.");
add: "The requested URL cannot be accessed because a " "valid username and password are required.");
context: Ns_ConnReturnUnauthorized(Ns_Conn *conn){    Ns_DString  ds;    int	        result;    if (ReturnRedirect(conn, 401, &result)) {	return result;    }    Ns_DStringInit(&ds);    Ns_DStringVarAppend(&ds, "Basic realm=\"", nsconf.serv.realm, "\"", NULL);    Ns_HeadersPut(conn, "WWW-Authenticate", ds.string);    Ns_DStringFree(&ds);    return Ns_ReturnNotice(conn, 401, "Access Denied",			   "The requested URL requires a "			   "valid username and password.");}