Made some small improvements to docs/topics/http/sessions.txt

      .. versionadded:: 1.0

      Delete the current session data from the database and regenerate the

      Delete the current session data from the session and regenerate the

      session key value that is sent back to the user in the cookie. This is

      used if you want to ensure that the previous session data can't be

      accessed again from the user's browser (for example, the

Clearing the session table

==========================

Note that session data can accumulate in the ``django_session`` database table

and Django does *not* provide automatic purging. Therefore, it's your job to

purge expired sessions on a regular basis.

If you're using the database backend, note that session data can accumulate in

the ``django_session`` database table and Django does *not* provide automatic

purging. Therefore, it's your job to purge expired sessions on a regular basis.

To understand this problem, consider what happens when a user uses a session.

When a user logs in, Django adds a row to the ``django_session`` database

logs out manually, Django deletes the row. But if the user does *not* log out,

the row never gets deleted.

Django provides a sample clean-up script in ``django-admin.py cleanup``.

Django provides a sample clean-up script: ``django-admin.py cleanup``.

That script deletes any session in the session table whose ``expire_date`` is

in the past -- but your application may have different requirements.

Default: ``None``

The domain to use for session cookies. Set this to a string such as

``".lawrence.com"`` for cross-domain cookies, or use ``None`` for a standard

domain cookie.

``".lawrence.com"`` (note the leading dot!) for cross-domain cookies, or use

``None`` for a standard domain cookie.

SESSION_COOKIE_NAME

-------------------