based on their members. For example, ``set('abc') == frozenset('abc')``
returns ``True`` and so does ``set('abc') in set([frozenset('abc')])``.
- The subset and equality comparisons do not generalize to a complete ordering
- function. For example, any two disjoint sets are not equal and are not
+ The subset and equality comparisons do not generalize to a total ordering
+ function. For example, any two nonempty disjoint sets are not equal and are not
subsets of each other, so *all* of the following return ``False``: ``a<b``,
``a==b``, or ``a>b``.