& elements()
 
  Syntax: elements(<list of words>,<list of numbers>[,<delim>])
 
  This function returns the words in <list of words> that are in the 
  positions specified by <list of numbers>. Optionally, a list 
  delimiter other than a space can be separated.
 
  Example:
 
  > say elements(Foo Ack Beep Moo Zot,2 4)
  You say "Ack Moo"
  > say elements(Foof|Ack|Beep|Moo,3 1,|)
  You say "Beep|Foof"