          lrange list first last
               List  must  be  a  valid  Tcl  list.  This command will
               return a new list consisting of elements first  through
               last,  inclusive.  Last may be end (or any abbreviation
               of it) to refer to the last element of  the  list.   If
               first  is  less  than zero, it is treated as if it were
               zero.  If last is greater than or equal to  the  number
               of  elements  in  the list, then it is treated as if it
               were end.  If first is greater than last then an  empty
               string  is returned.  Note: ``lrange list first first''
               does not always produce the  same  result  as  ``lindex
               list  first'' (although it often does for simple fields
               that aren't enclosed  in  braces);  it  does,  however,
               produce exactly the same results as ``list [lindex list
               first]''
