(scheme file)
(call-with-input-file)
TODO
(call-with-output-file)
TODO
(delete-file)
TODO
(file-exists?)
TODO
(open-input-file)
TODO
(open-output-file)
TODO
(with-input-from-file)
TODO
(with-output-to-file)
TODO
(open-binary-input-file)
TODO
(open-binary-output-file)
TODO