& peek()
 
  Syntax: peek([<object>], [<position>])
 
  This function returns an item from the caller's stack without 
  removing it from the stack. If <position> is specified, it returns 
  the item from that position in the stack (items in the stack are 
  numbered with 0 being the most recently push()ed item), otherwise, 
  it returns position 0.
 
  If <object> is specified and you control it, then it returns an item 
  from <object>'s stack.
 
  See Also: lstack(), empty(), items(), pop(), push(), OBJECT STACK