Remains as defined in ANSI Common Lisp. Additionally, you can control the depth at which slots inside arrays, structures and conses are described.
The function
describe
displays information about the object object to the stream indicated by stream, as specified in ANSI Common Lisp.
Arrays, structures and conses are
describe
d recursively up to the depth given in the value of the variable *describe-level*. Beyond that depth, objects are simply printed.
LispWorks User Guide and Reference Manual - 21 Dec 2011