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Dear SRFI-56 subscribers, Would it not be a good idea to add file positioning primitives to an implementation for binary i/o. This would make 'record based' i/o possible, with seeks to records, etc; and it would be a logical next step, because binary i/o provides predefined sizes for 'variable types'. Bigloo has for instance: (input-port-position port) (output-port-position port) Return the current position (a character number) in the port. (set-input-port-position! port pos) (set-output-port-position! port pos) Set the current position (a character number) in the port. Best regards, -- Hans Oesterholt-Dijkema