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## Index - U

    unbound
      Glossary Section ``U''
    unbound variable
      Glossary Section ``U''
    UNBOUND-SLOT
      Condition Type UNBOUND-SLOT
    UNBOUND-SLOT-INSTANCE
      Function UNBOUND-SLOT-INSTANCE
    UNBOUND-VARIABLE
      Condition Type UNBOUND-VARIABLE
    undefined consequences
      Error Terminology
    undefined function
      Glossary Section ``U''
    UNDEFINED-FUNCTION
      Condition Type UNDEFINED-FUNCTION
    Underscore (format directive)
      Tilde Underscore: Conditional Newline
    UNEXPORT
      Function UNEXPORT
    unintern
      Glossary Section ``U''
    UNINTERN
      Function UNINTERN
    uninterned
      Glossary Section ``U''
    UNION
      Function UNION, NUNION
    universal time
      Universal Time
      Glossary Section ``U''
    UNLESS
      Macro WHEN, UNLESS
    unless (loop keyword)
      Summary of Conditional Execution Clauses
      Conditional Execution Clauses
      Macro LOOP
    unqualified method
      Glossary Section ``U''
    UNREAD-CHAR
      Function UNREAD-CHAR
    unregistered package
      Glossary Section ``U''
    unsafe
      Error Terminology
      Glossary Section ``U''
    unsafe call
      Glossary Section ``U''
    UNSIGNED-BYTE
      Type UNSIGNED-BYTE
    :unspecific
      The Pathname Type Component
      The Pathname Version Component
      :UNSPECIFIC as a Component Value
      Relation between component values NIL and :UNSPECIFIC
      Restrictions on Examining a Pathname Device Component
      Restrictions on Examining a Pathname Directory Component
      Restrictions on Examining a Pathname Name Component
      Restrictions on Examining a Pathname Type Component
      Restrictions on Examining a Pathname Version Component
      Merging Pathnames
      Examples of Merging Pathnames
      The Device part of a Logical Pathname Namestring
      Unspecific Components of a Logical Pathname
      Function MAKE-PATHNAME
      Function USER-HOMEDIR-PATHNAME
      Glossary Section ``V''
    unspecified consequences
      Error Terminology
    unspecified values
      Error Terminology
    until (loop keyword)
      Summary of Termination Test Clauses
      Termination Test Clauses
      Macro LOOP
    UNTRACE
      Macro TRACE, UNTRACE
    UNUSE-PACKAGE
      Function UNUSE-PACKAGE
    UNWIND-PROTECT
      Special Operator UNWIND-PROTECT
    :up
      Restrictions on Examining a Pathname Directory Component
      Directory Components in Non-Hierarchical File Systems
    :upcase
      The Standard Readtable
      Symbols as Tokens
      Valid Patterns for Tokens
      Effect of Readtable Case on the Lisp Printer
      Variable *PRINT-CASE*
      Effect of Readtable Case on the Lisp Reader
      Macro WITH-STANDARD-IO-SYNTAX
      Glossary Section ``C''
    UPDATE-INSTANCE-FOR-DIFFERENT-CLASS
      Standard Generic Function UPDATE-INSTANCE-FOR-DIFFERENT-CLASS
    UPDATE-INSTANCE-FOR-REDEFINED-CLASS
      Standard Generic Function UPDATE-INSTANCE-FOR-REDEFINED-CLASS
    upfrom (loop keyword)
      The for-as-arithmetic subclause
      Macro LOOP
    upgrade
      Glossary Section ``U''
    upgraded array element type
      Glossary Section ``U''
    upgraded complex part type
      Glossary Section ``U''
    UPGRADED-ARRAY-ELEMENT-TYPE
      Function UPGRADED-ARRAY-ELEMENT-TYPE
    UPGRADED-COMPLEX-PART-TYPE
      Function UPGRADED-COMPLEX-PART-TYPE
    UPPER-CASE-P
      Function UPPER-CASE-P, LOWER-CASE-P, BOTH-CASE-P
    uppercase
      Glossary Section ``U''
    upto (loop keyword)
      The for-as-arithmetic subclause
      Macro LOOP
    use
      Glossary Section ``U''
    :use
      Function MAKE-PACKAGE
      Macro DEFPACKAGE
    use list
      Glossary Section ``U''
    USE-PACKAGE
      Function USE-PACKAGE
    use-value
      Function ABORT, CONTINUE, MUFFLE-WARNING, STORE-VALUE, USE-VALUE
    USE-VALUE
      Restart USE-VALUE
      Function ABORT, CONTINUE, MUFFLE-WARNING, STORE-VALUE, USE-VALUE
    USER
      Packages No Longer Required
    user
      Glossary Section ``U''
    USER-HOMEDIR-PATHNAME
      Function USER-HOMEDIR-PATHNAME
    using (loop keyword)
      The for-as-hash subclause
      Macro LOOP

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