---

6.3.9.2 Open Streams

These opertors require open streams:

• clear-input
• clear-output
• file-length
• file-position
• file-string-length
• finish-output
• force-output
• format
• fresh-line
• get-output-stream-string
• input-stream-p
• interactive-stream-p
• listen
• make-broadcast-stream
• make-concatenated-stream
• make-echo-stream
• make-synonym-stream
• make-two-way-stream
• output-stream-p
• peek-char
• pprint
• pprint-fill
• pprint-indent
• pprint-linear
• pprint-logical-block
• pprint-newline
• pprint-tab
• pprint-tabular
• prin1
• princ
• print
• print-object
• print-unreadable-object
• read
• read-byte
• read-char
• read-char-no-hang
• read-delimited-list
• read-line
• read-preserving-whitespace
• stream-element-type
• stream-external-format
• terpri
• unread-char
• with-open-stream
• write
• write-byte
• write-char
• write-line
• write-string
• y-or-n-p
• yes-or-no-p