Returns true or false, depending on whether the writing direction of the current language is "right-to-left".
FUNCTION Ora_Nls.Right_To_Left
RETURN BOOLEAN;
/*
** Verify that the language is a right-to-left language
*/
rtl := Ora_Nls.Right_To_Left;
IF rtl = FALSE
Text_IO.Put (langinfo.txt, 'This is not a right to left
language.');
ENDIF;