>across it. Anybody else remember something? To test whether something was a >string you had to type something like if TypeOf(aThing)==TypeOf('dummy'): from the book: if same_type(foo,[]): return "foo is a list" Met vriendelijke groeten, Hans de Wit Stichting Farmaceutische Kengetallen Postbus 30460 2500 GL DEN HAAG Tel. 070-3737448 Fax 070-3737445