iterator</a>(Sep | Elem)</tt></li></ul></p>
<p> </p>
</div><p><p>
  Inserts <code>Sep</code> between each element in <code>Iterator1</code>. Has no effect on  
an empty iterator or on a singleton iterator. For example:</p>
 
  <pre>  &gt; llists:to_list(llists:join(x, llists:from_list([a,b,c]))).
  [a,x,b,x,c]
  &gt; llists:to_list(lists:join(x, llists:from_list([a]))).
  [a]
  &gt; llists:to_list(lists:join(x, llists:from_list([]))).
  []</pre>
 
  Evaluates one element further in the iterator than the cur