sb-gray:fundamental-character-input-stream, sb-gray:fundamental-input-stream, sb-gray:fundamental-character-output-stream, sb-gray:fundamental-output-stream, sb-gray:fundamental-character-stream, sb-gray:fundamental-stream, common-lisp:standard-object, sb-pcl::slot-object, common-lisp:stream, common-lisp:t

None

A double ended string stream. Similar to string-stream, except that output which is printed to a string-io-stream can be read from the stream again.