SUBSEQ
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syntax: (subseq <sequence> <startpos.> <endpos.>)

This function returns a subsequence of the sequence.
The end-position must not be set.
This function is not supported by babylon v3!

example:       >(setq computer '("cpu" "ram"
                                 "harddisk" "floppy"))
               ("cpu" "ram" "harddisk" "floppy")
               >(subseq computer 2)
               ("harddisk" "floppy")
               >(subseq computer 2 3)
               ("harddisk")