A stream class for binary output.
stream
fundamental-binary-stream fundamental-output-stream
The class fundamental-binary-output-stream provides a class for generating customized binary output stream classes. A method for stream-write-byte should be provided.
fundamental-binary-output-stream
stream-write-byte
fundamental-binary-stream fundamental-output-stream stream-write-byte
LispWorks User Guide and Reference Manual - 13 Feb 2015