ANSI Common Lisp 18 Hash Tables 18.1 Hash Table Concepts 18.1.2 Modifying Hash Table Keys
220.127.116.11 Visible Modification of Objects with respect to EQUAL
As a consequence of the behavior for equal,
the rules for visible modification of objects not explicitly mentioned in this
section are inherited from those in Section 18.104.22.168 Visible Modification of Objects with respect to EQ and EQL.
22.214.171.124.1 Visible Modification of Conses with respect to EQUAL
126.96.36.199.2 Visible Modification of Bit Vectors and Strings with respect to EQUAL