-* Supported by being rewritten in pure Python (possibly using ``c
+* Supported by being rewritten in pure Python (possibly using ``c``):
see the `lib_pypy/`_ directory. Examples of modules that we
support this way: ``ctypes``, ``cPickle``, ``cmath``, ``dbm``, ``datetime``...
Note that some modules are both in there and in the list above;
type and vice versa. For builtin types, a dictionary will be returned that
cannot be changed (but still looks and behaves like a normal dictionary).
+* ``ctypes.pythonapi`` lets you access the CPython C API emulation layer
+ of PyPy, at your own risks and without doing anything sensible about
+ e.g. the GIL. Since PyPy 2.3, the functions are called with an extra
+ "Py", for example ``PyPyInt_FromLong()``.