Files have names, and can be referred to throughout your comnputer. But a file may include pieces of data which do NOT have names, and CANNOT be referred to elsewhere. Sometimes this is what you want. But often you would like to be able to refer to the smaller units WITHOUT names, and often you wish you did not have to refer to the larger ones WITH names.

************ ted nelson

http://xanadu.com.au/ted/TN/WRITINGS/TCOMPARADIGM/tedCompOneLiners.html