The biggest confusion right now I have is, why Oberon didn't use simple ascii text files? None of Oberon files are open-able as plain ascii file! Which extension in file name says that the file is a plain ascii file? With thanks and best regards, Yours sincerely, Srinivas Nayak Home: http://www.mathmeth.com/sn/ Blog: http://srinivas-nayak.blogspot.in/