File streams must be closed

• (close stream)

• File may appear to be empty until you close it

• with-open-file is the preferred way to open and close a stream

(let ((stream (open "c:\\junk.txt"

:direction :output)))

(print 'hello-world stream)

(close stream))

;; Or equivalently:

(with-open-file (stream "c:\\junk.txt"

:direction :output)

(print 'hello-world stream))

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