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 18.1.2.1 (Visible Modification of Objects with respect to EQ and EQL).
18.1.2.2.1 Visible Modification of Conses with respect to EQUAL
18.1.2.2.2 Visible Modification of Bit Vectors and Strings with respect to EQUAL