Fixed #9432 -- Revived documentation of ~Q usage.

    WHERE question LIKE 'Who%' OR question LIKE 'What%'

You can compose statements of arbitrary complexity by combining ``Q`` objects

with the ``&`` and ``|`` operators. You can also use parenthetical grouping.

with the ``&`` and ``|`` operators and use parenthetical grouping. Also, ``Q``

objects can be negated using the ``~`` operator, allowing for combined lookups

that combine both a normal query and a negated (``NOT``) query::

    Q(question__startswith='Who') | ~Q(pub_date__year=2005)

Each lookup function that takes keyword-arguments (e.g. ``filter()``,

``exclude()``, ``get()``) can also be passed one or more ``Q`` objects as