You can write Lisp data in a binary format to a file using dump-forms-to-file or with-output-to-fasl-file with dump-form. The file can then be loaded by load-data-file.
This allows you to transfer large amounts of data without using the Lisp printer and reader, which is much more efficient and robust.
LispWorks® User Guide and Reference Manual - 01 Dec 2021 19:30:25