O (format directive) Tilde O: Octal O (sharpsign reader macro) Sharpsign O object Glossary Section ``O'' object-traversing Glossary Section ``O'' ODDP Function EVENP, ODDP of (loop keyword) The for-as-hash subclause The for-as-package subclause Macro LOOP of-type (loop keyword) Destructuring Macro LOOP :off Notes about The KEYWORD Package :oldest Notes about the Pathname Version Component Glossary Section ``V'' :on Notes about The KEYWORD Package on (loop keyword) The for-as-on-list subclause Macro LOOP open Glossary Section ``O'' OPEN Function OPEN OPEN-STREAM-P Function OPEN-STREAM-P :operands Condition Type ARITHMETIC-ERROR operator Glossary Section ``O'' :operator Macro DEFINE-METHOD-COMBINATION OPTIMIZE Declaration OPTIMIZE optimize quality Glossary Section ``O'' &optional Ordinary Lambda Lists Specifiers for optional parameters Specifiers for keyword parameters Generic Function Lambda Lists Specialized Lambda Lists Macro Lambda Lists Lambda-list-directed Destructuring by Lambda Lists Boa Lambda Lists Defsetf Lambda Lists Define-modify-macro Lambda Lists Define-method-combination Arguments Lambda Lists System Class FUNCTION Type Specifier VALUES Constant Variable LAMBDA-LIST-KEYWORDS Macro SETF, PSETF optional parameter Glossary Section ``O'' or Built-in Method Combination Types OR Type Specifier OR Macro OR :order Macro DEFINE-METHOD-COMBINATION order of evaluation Special Operator LOAD-TIME-VALUE Evaluation of Subforms to Places Special Operator CATCH Macro MULTIPLE-VALUE-SETQ Order of Execution The for-as-arithmetic subclause Defaulting of Initialization Arguments Macro ASSERT Accessor LDB ordinary function Glossary Section ``O'' ordinary lambda list Glossary Section ``O'' otherwise Macro CASE, CCASE, ECASE Macro TYPECASE, CTYPECASE, ETYPECASE otherwise inaccessible part Glossary Section ``O'' output Glossary Section ``O'' :output Function OPEN OUTPUT-STREAM-P Function INPUT-STREAM-P, OUTPUT-STREAM-P :output-file Function COMPILE-FILE Function COMPILE-FILE-PATHNAME :override Macro WITH-COMPILATION-UNIT :overwrite Function OPEN