issue any SQL in order to load collections or attributes which are not
yet loaded, or were marked as "expired".
- The session methods which control instance state include ``add()``,
- ``delete()``, ``merge()``, and ``expunge()``.
+ The session methods which control instance state include :meth:`.Session.add`,
+ :meth:`.Session.delete`, :meth:`.Session.merge`, and :meth:`.Session.expunge`.
The Session object is generally **not** threadsafe. A session which is
set to ``autocommit`` and is only read from may be used by concurrent