!4!!5--1
!0Common Lisp Object System Specification!!5--1
!15. Design Rationale!!5--1
!4CONTENTS!!5--2
!2Introduction!!5--3
!2Why DEFMETHOD Disallows Method Selection on Optional Parameters!!5--4
!2Motivation for Several DEFCLASS Defaults!!5--5
!2Assigning Classes to a Subset of Common Lisp Types!!5--6
!2Method Selection by Predications More General Than Classes!!5--8