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(slib.info)Legacy

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Legacy
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  These procedures are provided by all implementations.

 - Function: identity x
     IDENTITY returns its argument.

     Example:
          (identity 3)
             => 3
          (identity '(foo bar))
             => (foo bar)
          (map identity LST)
             == (copy-list LST)

The following procedures were present in Scheme until R4RS (Note:
Language changes.).  They are provided by all SLIB
implementations.

 - Constant: t
     Derfined as `#t'.

 - Constant: nil
     Defined as `#f'.

 - Function: last-pair l
     Returns the last pair in the list L.  Example:
          (last-pair (cons 1 2))
             => (1 . 2)
          (last-pair '(1 2))
             => (2)
              == (cons 2 '())