Conforming implementations that wish to retain any removed features for compatibility must assure that such compatibility does not interfere with the correct function of conforming programs. For example, symbols corresponding to the names of removed functions may not appear in the the common-lisp package. (Note, however, that this specification has been devised in such a way that there can be a package named LISP which can contain such symbols.)
Conforming implementations must implement all deprecated features. For a list of deprecated features, see Section 1.8 (Deprecated Language Features).
string-char was removed.
int-char, char-bits, char-font, make-char, char-bit, set-char-bit, string-char-p, and commonp \f{provide},
and \f{require} were removed.
The special operator compiler-let was removed.
digit-char was removed. The bits and font arguments to code-char were removed.
The \param{pathname} argument to \funref{require}\idxref{require} was removed.
char-font-limit, char-bits-limit, char-control-bit, char-meta-bit, char-super-bit, char-hyper-bit, and *break-on-warnings* and \f{*modules*} were removed.
#,” reader macro in standard syntax was removed.
lisp, user, and system are no longer required. It is valid for packages with one or more of these names to be provided by a conforming implementation as extensions.
What about deprecated features? see CHAP-A-4-DEPRECATED? -kmp 27-Sep-90