 view of the portion of this sorted set whose elements are
 strictly greater than fromValue and strictly less than toValue,
 optionally including fromValue and toValue.
 This method does not exist in the standard <A HREF="http://download.oracle.com/javase/1.5.0/docs/api/java/util/SortedSet.html?is-external=true" title="class or interface in java.util"><CODE>SortedSet</CODE></A> interface.

 <p>Note that the return value is a StoredCollection and must be treated
 as such; for example, its iterators must be e